Z28 off road cam specs. III LS1 Corvette 350, uses 1.

Z28 off road cam specs 662", 111 LSA. These specifications are from Hot Rod Magazine January 1969. good recommendation, then go over to Team Chevelle and ask UDHarold, the owner of Ultradyne Cams for his recommendation spec'ing the 30-30 as the cam you want a hydraulic replacement of. 478" 10. 512 - 112 - Off Road cam, not the factory installed 67 68 69 Z28 cam. Factory ''Off-Road Special'' Camshaft BluePrinted Mechanical Flat Tappet Camshaft Lift:. If this doesn’t put a smile on your face and make you feel like a kid on Christmas morning you’ll know you are no longer among the living. Camaro. Z28 gets 15 inch wheels, different alignment specs (vs. 69 Z28, 302DZ question. Every time a new cam came out it soon overtook the old grinds. ,1964-65,factory 365/275 hp 350 c. 86 @ 105, Reman 355, Z28 heads, CC 502, CPT 3, Edge my 350 and 383 had ported LT1 AL heads w/2:02/1:6 valves but the cams 214/220 (custom grind), for 350 and 218/224 off the shelf XFI cam in 383 make more TQ than I came up with a couple of cam specs that were based half on results I got using Dyno Jr engine software and The 5. I don't see it in Cam Kraft's list of off the shelf offerings, may have to call them. Hawks offers several different cams The specs on a 302 are simple: 4" bore x 3" stroke. 327 soild roller cam. Having a 112 lobe center also gives you more piston to valve cleanace. you can get away with 10-14 and not have a problem. 022-. And that was only the second time out for the new car. BTW, the 140 cam came to be known as the first design off road cam. NOT AN AFTERMARKET CHINESE PART 2nd Design Off-Road cam, P/N 3965754 Casting #3965751 Intake 248 duration (324 advertised) Exh. Coil bind at 1. Road Race, Bracket race, Circle track cam, Rough idle, 12-1+ compression and 3500+ stall required, these cams mimic the specs of the originals—but are we would need a good deal more info,to give you a good idea what would be about ideal. Similar to the 140, but based on a 110 vs the 112 of the 140, improved ramps, solid roller and now the flat spot is gone and makes more power. The kit includes a tool that allows simultaneous compression of Its in a 69 Z28 with headers, ported 186 202 heads, orig Chevy dual plane, with a 750 annular quick fuel carb venolia 11-1 pistons, eagle i beam rods, with a tremec trans and a 410 gear. There are a couple of other factors, like slow/fast ramps, but get this right and you will be happy with your HR! I would guess your HR ZZ4 cam has more vac at idle than my FT 30-30 because of your fast ramps and my slow ramps, even though . This is cam with less than . As TC mentioned, it also worked well with the original 346 30-30 Z28 cam. 00 . It is now running an Isky Z50 because Isky changed its cam specs, and the current Z50 is closer to the cam’s specs for the 1960s Z60. View in 2025 Catalog. 267 duration (334 advertised) Lift: . I have heard for years that this camshaft has too much seat duration and to wide of a separation. The 1969 Camaro Z28 as an investment? The 1969 Camaro Z28 has long been regarded as one of the most iconic and desirable muscle cars of the classic era. No im looking at a cam for my 99z. Hotcam springs and cam specifications 101 Seat at 1. 0:1 11 '97 Gen. , -142), springs. net, the Chevrolet Camaro Z28 was heavily modified to handle off-road terrain and equipped with 4x4 tires used on the modified 1970 Dodge Charger. The 327 came out in 1962. 78-1. But for a street driven car with an automatic, it'll be a pain in the butt to live with. That would The factory production 302/290 cam is not what you are shooting for. 1970 Chevrolet Camaro Z/28. Then the next cam lasted me 8700 miles and both cams used Z28 springs. I have never run this cam, but I suspect it might run even better than the setup Smokey used to make 465 hp. Stick with the Standard 302 (30-30) 69 SS396 Cortez Silver(SOLD) 69 Pro Tour - LS3/T56 (SOLD) 69 Pro Tour - LS7/T56 (SOLD) Save Share item 5 NOS 1967 - 69 Camaro Z28 302 Cross-ram off-road Cam 140 Valve springs 3927142 GM NOS 1967 - 69 Camaro Z28 302 Cross-ram off-road Cam 140 Valve springs 3927142 GM. 26". 423"/. 6:1 roller rockers. 7" rods except for the 400. 11 rear, it's can be a street monster. 5 from other 69 Z28 302 camshaft Thanks for all answers ahead of time! John Lighthart Charleston, S. High Reving Screamer. The cam specs are cited in a number of period sources — both Car Life and Road & Track — so they probably came from Chevrolet’s AMA specs. 508 lift intermediate racing cam. 8 inches Rear Track 57. 020" for both intake and exhaust. That's why I used the detailed lobe data off the Chevrolet drawings to develop my own specs for both mechanical and hydraulic lifter cams. i've went through about 10 COMP Cams Cam Phaser Limiter Kit *Fits: 2017-2021 Camaro ZL1 This COMP Cams Cam Phaser Limiter Kit will restrict cam phaser motion for use of higher performance camshafts in GM LT4 engines. Used them in a number of budget build engines and was never disappointed. pdq67 Here is the car idling. 485' lift, stock heads, pistons, intake It may be an old wives tale. OK, If the original # 3849346 Duntov cam is available then that's what I want, if not, then I want a cam that matches the 30/30 specs. Off highway/Off road 1969 Z28 302 Crossram Project:Taming a Wild Mouse. Way bigger than you are shooting for. Not saying that's good or bad, just stating where they come from. 040" larger in diameter; they were never installed in any production engine. Specification is 1st design off road "140" cam 257/269 . Here's the spec's of the two cams: 1. It was to be used with the 3927140 "off road"cam. I use part 5231585 edge orifice lifter. "754" Tgese were all sold as service parts. Hope you enjoy what ever was the 70 z cam refered to as the . 1:1 comp or higher and it's rpm range is 4500-7200rpm and it pulls like friggin crazy from 4500rpm and on up past 7k rpm I ran the original off road Z-28 cam in both a 292 and a 301 - if you run a manual trans and 4. 515 112 LS - Competition Products 10:1 compression Thanks for looking and I hope this is helpful. 525" Max Lift (0) Reviews: Write first review. Check the specs and you will see what I mean. Articles. The ones who advertise "Z-28 springs" seem to be trying to mimic the specs of the factory "off-road" springs (pn 3927142) that were designed to be used with the "off-road" camshaft (pn 3927140), neither of which were actual DZ302 is freshly gone through and tuned w/ correct 2nd design off-road cam w/ correct GM Lift: . Ideal for cams in the . does federal mogul have that grind Glenn? , I have been looking for one for Alex's road race Chevrolet Factory Cam Specs by part number Part # Lifter type–duration at . Then I searched CR 882 , it came up with 2 cams, one was for a Hemi, one was for a sbc. Notice how much hp is made up above 7000 rpm. Ihave a 69 camaro,4 speed m21,410 rear. 90-4. Clevite/TRW's cams are still made in the USA, but their solid lifters are made in Mexico. Speaking of caressing the '14 Camaro Z/28's LS7 oh-so-gently, let's get down and dirty. 050" (333 advertised) I started playing with engines in the late 60's, had my Lola T-70 running since 1978 with a roller cam in it. LT4 Hot Cam Specs The zz383 uses cam similar to GM 846 Cam 112lsa I. –346 big Duntov or 30-30 solid cam, I believe it was the same as the Chevy Z28 off-road grind. [emoji41] Off-Road. We know that the actual running clearance/lash for these cams was somewhere around . 14%) $36. Distributor Note: 12. those are all 24hr cold numbers. 050 in only about 20 degrees of crankshaft rotation where most mechanical THAT cam was made as a direct replacement for the original 30 30 cam in the Z/28. Simulation. RPO-U17 factory in dash 8k tach and console gauges. Roller: 202/210 . Cam was installed around the fall of 1971 by original owner. Thanks! Save Share Reply Quote Like. Development has improved both cars BTW the cam we used to get the best results with in the past on retro Z28 builds was a crane 110921 flat tappet solid lifter ,but the current roller cams would do even better, keep in mind that the cross-ram intake works best on a 350-406 with a cam and gearing that keeps the engine in the 3500rpm-7000rpm band, so both the cam and the intake design match that . Brand New GM 69 Z28 2nd design off-road cam Part # 3965754 In Box *** SOLD *** Brand new, Never installed In the box 3965754 NOS GM 69 Camaro Z28 Cam Shaft. r. As Trans Am titles in 1968 and '69 showed, the Z28 was a road-racer first, a street machine second. 505 max lift. These seem to be less valuable than the earlier #140 crossram spec'd camshaft. 505 . 250" Z28 Valve Springs - . 1970 Dodge Charger R/T; 1972 Ford Gran Torino Sport; 1973 Chevrolet Camaro RS-Z28 F-Bomb; According to Comingsoon. 09390 . The factory camshaft for the `69 302 Z28 engine specs out with 254 degrees of duration at . isky 505 T solid lifter/flat tappet cam specs RPM-Range (3000-7000) Valve Lift (. The sbc cam came up as Z28 off road special cam. 4) in 1971, the model with 2-door fastback coupe body and V-8 5733 cm3 / 349. 5:1-to-11:1 compression 383 built to similar specs I ran the original off road Z-28 cam in both a 292 and a 301 - if you run a manual trans and 4. The HD 3927142 valve spring was never installed on a production engine. Code 69 69 Cortez Silver Code 711 Black bucket seat interior. 495/. 1. Quick access to automobile-catalog website - type in a browser: After two years of racing and dozens of magazine road tests, Chevrolet marketing was finally getting behind the Z28 and carrying the word from Detroit to dealers nationwide. 002" tighter than spec when cold. Search automobile-catalog: About the author Pawel Zal: Car Specs Homepage. 020" checking dz302 with optional "140" offroad cam installedthis is a fresh start in the morning, and the car was cold idle was below 1000 so it wasn't making enough C3 Tech/Performance - True hp of 1970 LT1, and more about LT1. 550". $849. The off road springs came out with the off road series cams "140" and the second design. Buildig a 302 z25 clone motor. 500" lift (commonly called the #140 spring based on it's part number from the 1960's) that was the spring used in the 67 Trans-Am service package "off road" cam for the Z/28. Ford Mustang GT - Comparison or road circuit, this has You'll also shave $4400 off the price of a Mustang and $4245 from a Camaro's sticker WTB: NOS SBC Cam #3965754 2nd design off-road Parts/Memorabilia - Wanted. In short, it is a more radical off road design, although not that much different to merit changing the cam. 050" lifter rise data for the hydraulics is the same as Chevrolet, but not for the mechanical lifter cams. Seat pressure is 110lbs @ 1. The 3927142 springs were used with the 3927140 Mechanical - 257/269 - . 5:1 and 1. Not because I want to but because it was stock on my Camaro. 565Lift and the amount of clearance you desire before coil bind . I did not machine, spec or I will definitely look into a lil later down the road as I need to let my forged pistons, Eagle rods, balanced, Iron Eagles, 9. I've allways set lash cold and had NO valve related problems. It also opens sooner. 540 1. 827 posts · Joined 2007 Add to quote; Only show this user #2 · Dec 9, 2009. It'll stand your hair on end. With its unique design and rich history — both in road racing and on the strip, it has definitely earned its respect. The LG4 Z28 proves the most important aspect of a performance car isn’t horsepower, it’s character. 030 cam or was that the 375 fuelly,that cam went 100,000+ miles in a 64chevelle ss 4 speed 283(301)cu. Move mouse over code on above trim tag examples for detailed description or Click Here for general trim tag decoding information. 15". the last cam i ran Brand New GM 69 Z28 2nd design off-road cam Part # 3965754 In Box *** SOLD *** Brand new, Never installed In the box 3965754 NOS GM 69 Camaro Z28 Cam Shaft. old school fuelie and z28 cams Standard 302 (30-30) cam, P/N 3849346 Casting #3849347 254 duration @ . Actually those specs look like the off-road Z28 "140" cam which was plenty rowdy. 030- . ,1970-71 LT1,factory 370 hp I never found a direct cross over for the LT-1 cam. SDPC SBC 1. 504/. 512 112 lobe sep It is new still in the box without lifters. –346 big Duntov or 30-30 solid cam, (346 per GM, Chevrolet’s DZ 302 cubic-inch powerplant is regarded as one of the most legendary small-blocks that Chevrolet ever developed. All are mechanical lifter cams. DZ302 Z/28 camshaft Project Cars C1 & C2 Corvettes - WOW, 30-30 back in my Z28 and runs like a monstor - ok, some of you have been following my thread on the cam swap I did in my 69 Z28 with its numbers matching DZ302 i've been on the hunt for improvements to the original designs while keeping them close to stock specs. Just Author Topic: 1968 z28 cam shaft (Read 13341 times) sd1968z28. » Firebird on Overhaulin' Mon Nov 24, 2014 10:11 pm by The Firebird » NWS Statements Tue Jul 22, 2014 6:58 pm by The Firebird » PVFA upcoming events Thu Jun 26, 2014 4:45 am by TA78 » Car Show August 3 I'm sure some of you have run the 302 Z/28 140 cam in your small blocks at one time or another. 050" (346 advertised) But when it comes to real driving, to harnessing the power of a big American V-8 and putting it down on the road, the Camaro Z28 H. The "140" off-road cam is just about that, OFF-ROAD or arguably barely streetable. The car runs very strong up to 7 grand and that is my SPECIFICATIONS. 15 N40 The Chevrolet small-block engine is a series of gasoline-powered V8 automobile engines, produced by the Chevrolet division of General Motors in two overlapping generations between 1954 and 2003, using the same basic engine block. 00. Redline's camshaft package includes a custom spec cam (ground by COMP Cams) that measures 0. The cam in the original car was an Isky Z60. 65 N36 Telescopic Steering Column 2,415 (10. 6 inches Off Road Exhaust System 2,326 (10. Catalogue of 703 car makes & manufacturers. It is a good short track and racing cam. I was going to go with the GM Cam 3927140, but my engine builder talked me into the Factory Muscle cam. 11 rear gears and a muncie trans. C3 Tech/Performance - 140 camshaft. in. or less street motor a nice street mechanical cam would be the Comp 282S 236-236-. 254/254 . Their data yields simulation results that don't make any sense. I wouldn't use them - the -142 springs were designed for use with the -140 "First-Design Off-Road" cam (the over-the-counter race cam for the Trans-Am Camaros), are higher pressure and . The 140 goes from baseline to . Oaklyss. ,,small yellow line 14" tires,car was yellow so tires matched the car Anyone have any comparison between this one and the 140 cam? I can't find much info on this cam, the 140 or the 30-30 seems to be more popular for a 302. 050" - . BTDC Intake Max lift @ 112 deg. 00 +$20. They were a popular circle track grind since they came in at around 3300 rpms. Walter R. back in my day, was a lot of fun but had no low end torke, would be side ways with the 308posi tell at 6000 rpm. Small Block Chevy Stock Diameter Z28 Style Valve Spring Set. Developed in-house using BTR designed lobes, the new Stage 4 cam is the latest offering in the LS7 line up which has culminated from extensive in-house Spintron testing, coupled with thorough vetting on our 1980 (Z28) Example Cowl Tag & Description (Note: This car was delivered into Canada) The trim tag, located on the cowl area identifies significant information about your car. 70. In the early 70's, I drag raced a 69 Z28 with the optional 140 off road Z cam (FAR more radical than the stock Z cam) and used the 'off' method to set the valves. with good results. 488/. ENGINE TYPE V-8, water-cooled, cast iron block and heads Complete performance review and accelerations chart for Chevrolet Camaro Z28 4-speed close (man. 112 LSA + 2 Adv, . Top. I've purchased from this vendor, great service. The old 30-30 cam in the earlier 327's and Z-28 302's used GOOD, inspected, stock springs vs what I always thought were the Z-28, (i. 750", open pressure 325lbs @ 1. '94 camaro Z28, GM 350 ramjet cam 14097395 using stock vlv springs, A4 BTO Level 3, Edelbrock shorties, GM #140 Off road Cam C3 Tech/Performance - L82 Cam Specs - I've searched but have not found it? What are the original cam specs for the '78 L82? Just for the fun of it over beer after work we pulled a new in the box GM off road mechanical cam out and rigged it up with dial indicators and it measured different and lower numbers than the cam card. The 302 cubic-inch engine was developed as the powerplant for the first-generation Z/28 Camaro (model years 1967 This is how much to trust advertisers. Brings back memories of the 3927140 and 3965754 off road cams. e. Wait until a nice day then take the t-tops off and drive on the windiest road in your area. net The Supercar Registry > Classified Section > Parts/Memorabilia - Wanted: WTB: NOS SBC Cam #3965754 2nd design off-road User Name: Remember Me? Password: Register: Album Gallery: Thread Gallery: FAQ: Community: Calendar According to official sources, only 71 people-lucky owners of two Corvettes and 69 Camaros-were fortunate enough to get their hands on what was arguably the most powerful production car and engine package ever offered to the American public: the '69 all-aluminum big-block Chevy 427ci RPO ZL1. With its unique design and rich history — both in road racing and on the strip, it has This cam will be way too much cam for a street car and for racing there are many better cams out there. The original cam has 254 degrees duration at . I think each year old school fuelie and z28 cams Standard 302 (30-30) cam, P/N 3849346 Casting #3849347 254 duration @ . 00 inches Overhang (Front) 31. 485″ gross lift You can still get a cam with the same specs from most cam grinders. All small-blocks used 5. 040= . 204/214. They are being used for educational purposes only. This engine in the new '67 Z28 race car missed the NHRA national record for D/Stock by . Here are the cam specs I found on another website: First Design Off-Road cam, P/N 3927140 Casting #3927141 Intake 257 duration @ . Ihave a 40 over 010 block, 69 z28 crank, 186 double hump heads, 11. 493''/. 576 Exhaust 236 Intake / 242 Exhaust duration Black-painted grille with bright argent outline. 050" (333 advertised) Exh. 480"-. 60″ exhausts, first intended for the still-born 1961 315 hp FI 283, and then used on the 340, 350, 360, 365 and 375 hp versions of the 327. bobss396, Oct 8 I bought a NOS because while all the aftermarket cam companies' specs were similar, none of them were the same so it was impossible to know which cam was the exact copy of the GM USED SEVERAL DIFFERENT CAMS IN THE HIGH PERFORMANCE SMALL BLOCK 283,327,350 AND 302 Z28 ENGINES. Welcome to the home of Grassroots Motorsports, the hardcore sports car magazine—and your home for car reviews, tips, and road racing news. how much vacuum? - I'm sure some of you have run the 302 Z/28 140 cam in your small blocks at one time or another. $475. 504 Alternator: Delcotron 37 Amp, part # 1100837 Water Pump: 3953692 crank pulley: 9956668 coded CG Deep Groove Water Pump Pulley: 3995647 coded AP Power steering Pulley: last four #'s 1105 Note: Rods: LT1 "pink" rods. Search automobile-catalog: About the author Pawel Zal: AdsFree Experience For our Patreons: Home. Jerry McNeish uses one in his record holding 67 Z/28 and runs mid 10s. These springs are stock diameter 1. Good overall street cam with lots of low and mid range. So their stage 1 was like a 2 or 2. The fourth generation of the Camaro was introduced in January 1993, as a 1993 model. This high-performance variant of the already legendary Camaro line boasted a potent 302-cubic-inch V8 engine that churned out an impressive 400 horsepower, allowing the Z28 to sprint from 0-60 Cam specs Hydraulic roller Duration at . 460 (intake/exhaust), Duration: 346/360 (i/e), with 1. Like all of our high performance valve springs, these Z28 springs are made from the Actually those specs look like the off-road Z28 "140" cam which was plenty rowdy. Sounds like fun. Dyno results listed below . i. The "off road" Z/28 spring is still less than 0. Both show a "checking clearance' of . Upgrade your vehicle with reliable performance parts. 5 c. Very stout cam that came on around 3,000 RPM and would make power to my redline (6,500). Blueprinted replacement for factory P/N 3849346 with Great info. The difference in 302, 327 and 350 pistons is the pin height. base) and quicker steering (vs. 050, 2700-6200rpm in 350 and about 3200-7200 in302. 228 I. Glossary. 493" int @ 108 deg ATDC, . 644/0. It has way too much intake duration. . 525max lift . 038 quench, XR270HR Cam, Z28 intake, FAST-EZ EFI 2. I'm sure some of you have run the 302 Z/28 140 cam in your small blocks at one time or another. In the past you'd see more names like RV cam Tow truck or off road cam 3/4 race cam, full race cam. SKU: SD1004. 024" for the L88, not the . ,1967-69 Z28,factory 290 hp 327 c. Road Race, Bracket race, Circle track cam, Rough idle, 12-1+ compression and 3500+ stall required, these cams mimic the specs of the originals—but are produced on today's CNC grinders using modern lobe technology to give you better performance and reliability. 050 in/ex, . See less See more 1 Reactions: wireboy355, Ole Blue 69, SY1 and 1 other person. 050" lift and 346 degrees 'advertised' duration. Corvette. Roller Cam, 224/232 Dur. 555 Intake . Z28 Coupe versions offered for the year 1981 with complete specs, performance and technical data in the catalogue of cars. The one you have must be based on one of the off road cams that were offered over the counter. 510" Intake and . No cam card can be found. 0:1 114: Engine Break In for 1969 dz302. 030 . I have a TSP 228R 112lsa in my car , and a 3400 stall converter One cam that may really work with your combo is the Old Duntov 140 Off Road Cam on Pump Gas - GM Specs: Off-Road cam P/N 3927140 Casting #3927141, 333/346 ADV, Int 257 @ . 6. but just a bit of info you might find of interest, the old Z28 302 engines tended to run really well with the crane 114681 flat tappet solid lifter cam if they had 3. 662"/. Specifications. Colorado. Trust me - I am running it now. 5 pistins, pink rods. 509 E. THIS IS THE 03965754 2nd OFF ROAD DESIGN. 9 inches Overhang (Rear) 45. 050 Duration (254 254) LC 108 IF you are on a budget and want a cam real close to a 505 T cam only ~ $65 w/lifters $115 for $200 you get thw complete kit,,, Complete Oval Track Cam Kit, Kit #2, Mechanical, . There is no such thing defined, just a marketing name for their performance starter cam. 450/. Googled cr882 and I brought me to the Crane Cams website. 050" (333 advertised) They worked with Cam Kraft to grind a proper cam for the 302 crossram, one that didn't have this Tq flat spot. Sort by Oldest first Oldest first Newest first Most reactions. More specificly IIRC their 1 2 3 cams were spec'd like most would have a 2 3 4. this cam needs 11. I lost 3 lobes on my 70 Z28 LT1 solid lifter cam after about 43,000 mi from my '85 rebuild. 050" (333 advertised) 1969 Z28, Burgandy, numbers matching, 12,900 miles 1968 RS 327 4 speed 1970 Z28 M22 4:10 bought from original owner 1961 Chrysler 300G convertible. 550/. With iron heads just set at the recomended spec. Ask PDQ67 about some Isky solid cams he has used. Explore This Page. all that was left to do was install a fresh set of cam bearings and oil galley plugs. RPO Z28 dropped at the end of model year. Red 1967 Chevelle SS 396, 4 speed, Cam and Lifter kit, Pro SBC Stage 4 Hyd. 540 Exhaust. Elgin does make the 178 mechanical cam used in the 70's LT1, part number E904M, and they also make the Duntov 30-30 346 solid cam, part # E901M. 512'' Duration @ . A relative of that era's all-aluminum Can Am road-race Rat All Chevrolet (USA) Camaro 2nd-gen. 90 rear (moser 2nd Design Off-Road cam, P/N 3965754 Casting #3965751 Intake 248 duration Cam Specs: Cam Type: Roller. N/A Hyd. INTAKE LOBE LIFT @ TDC: 0. 050" (intake & exhaust). 446" 8. No wonder they tended to float up above 8,000 rpm and that my friend led to bent valves! I figure Elgin's Z-28 type -142 springs will do nicely. Used the 69 Z/28 dual plane high rize with Holley 4780. 050=. But, how many of you know about a little-known RPO that was an option for Here's one now: 1999: Chevrolet Camaro Z28 vs. 78" Open 273lbs rate 331lbs/in Coil Bind at 1. It was a very vague search, so it might not be too accurate. Any Help would be great. New Additions. 87 first gear New 3. 493/. I think that if I was gonna go for a "factory" camshaft that is really too radical for practical use, I'd jump straight to the 140 camshaft. 90's, so I think it was not too detrimental to its performance. 479rwhp 436ftlbs 2002 Z28. And when one of the above specs says that it dies below 4200 RPM - believe it! They list the Crane Blueprinted Z28 cam that has the original specs. Camaro Restoration Guide - About the L82 engine used in 1973 and 1974 Camaro Z28 Cars Cam specs: Hydraulic, Lift: . On a 112 degree lobe separation angle, 248/259 @ . Last edited by F-BIRD'88 on Sat Jul 08, 2023 10:57 pm, edited 1 time in total. Off-Road" cam, (-140), was never installed in a stock 302 from the factory. 5:1 110: GM/Crane 50 state legal 305-350: 12364052: 3849346: Mech. 050 In/ex–Lift in/ex–centerline–description Small Blocks 3849346 Mechanical – 254/254 3927140 Mechanical – 257/269 – Street, off-road or racing — elevate your Chevrolet. off road cam is killer They also make the first design off road mechanical cam as well. Join us now! Yenko. 215=. 535" exhaust. but with so many choices out there and gt500 TB, roush TVS CAI, Detroit rocker SC grind camshafts, Mac LTs, off road x, roush off road mufflers, roush short throw shifter, kenne bell BAP, Brenspeed 93 octane tune. 00 shipping. The intake manifold is a prototype of the original 1967 Z high-rise, but with a December 1965 date, and an experimental GM part number on it. Member ; Posts: 258; 1968 z28 cam shaft « on: May 17, 2007, 08:41:54 PM » i am getting my original 302 rebuilt and was wondering what cam shaft to install. - Hi to all. Also note that some of these specifications may have been specific to the car being tested. Lastly, the cam is a cast iron cam and does work with stock SBC springs although the stronger off road springs work even better. He said it would be a better street cam, since the 3927140 cam is an off road design and makes power (first posted 2/10/2017) What really puts the Mustang II Mach 1 in perspective is that in the very same issue of Car & Driver (September 1973) they also tested a Camaro LT Z-28, which was not only cheaper than the V6 Mach 1, but put it Even dropping the clutch at 4000 rpm produced stumble off the line. There is no "cross-ram" cam as such even though the -140 cam was generally used with the cross-ram. 90 N14 Side Mount Exhaust System 4,209 (18. GM/Crane non-emissions vehicles & off-road: 12353916: Hyd. And will probably get the doors blown off your car by any stocker out there, unless you want to leave the line at 4500 rpms or I have spent some serious hours with a Desktop Dyno and find that the 30-30 cam actually shows better torque and usable horse numbers than the off road (140) cam. I used Joe Gibbs BR oil for the break-in and then used but i'd try "Predator Cams" I found them on ebay, and bought 2 Duntov 30-30s from them, and they were both perfect by degree standards i asked them about the 140 cam and they had it in their catalog as a step up from the 30-30 you might have to ask for it by the 050 duration specs but they had it in their catalog. As for the cam, the "Off Road" GM 140 cam is hard to beat both in performance and sheer great sound if you want to use a GM cam. 485" 11. Called comp cams they sugested 12-511-5 cam with 510 530 lift,242 250 duration at. Crane was the only manufacturer that I found with specs that, on paper, look like original GM specs. I believe that the 370hp rating of the LT1 is a factory lie, another case of an engine being underrated by the Find Used Chevrolet Camaro Z28 1970 For Sale The engine is notoriginal, but a correct spec. The other cam mentioned was the off road 7140 and 7141 cams milling no c700P and c750P . But Comp Cams makes a "nostalgia" cam that is an upgrade from the DZ cam that is on a tighter lobe sep angle with about 10- degrees less duration. 512" intake, . THIS WAS THE CAM THAT WAS OFTEN USED ON A CROSS RAM SET-UP TO GET THE ENGINE AWAKE AFTER 4,000 RPM RANGE. 485"/. 030) ADV Duration (290 290) . There are more modern designs out there but it would never sound as good as a Z28 off road cam. Silverado 1500. -----Bill Pritchard 69 SS396 Convertible Fuel Economy and Real-World MPG. FWIW, I've had a crane blue print "140" cam in my '69 Z since I rebuilt the engine in When it comes to famous option packages on classic Chevrolet cars, we all know about the Z28, Super Sport, Rally Sport, and even the ZL1 and COPO. 050″ on both the intake and the exhaust side with . The original factory Z-28 302's used the same valve springs as the 2-bbl 307's and 350's (pn 3911068). 520" lift range with a max of . GM USED SEVERAL DIFFERENT CAMS IN THE HIGH PERFORMANCE SMALL BLOCK 283,327,350 AND 302 Z28 ENGINES. lobe separation Exhaust Max lift @ 116 deg. 53%) $42. the #140 cam was designed for the DZ302 with a cross ram and it's intended usage was for the trans am series . Iwanted to run 140 off road cam but gm and crane discontinued. 68z28sd. 7-liter LT1 V8 engine. I now have aluminum heads on the engine and set the lash . In February of 1970, only about 125,000 Camaros were built and only 7% had the Z28 specialperformance package AM/FM . 5 rockers) 114 deg. I'm rebuilding my 68 Z/28 302 motor to stock specs with stock components(new era parts, bearings rings etc) the block, heads and intake are original as are the crank, rods and pistons. item 2 CAMSHAFT SBC NOS GM 03965754 302 DZ CROSSRAM OFF ROAD 2ND DESIGN SOLID Z28 LT1 L CAMSHAFT SBC NOS GM 03965754 302 DZ CROSSRAM OFF ROAD 2ND DESIGN SOLID Z28 LT1 L. Malik Guru Posts: 6659 Joined: Tue Jul 24, 2012 3:15 pm Location: Roseville, Michigan (just north of Detroit) Re: Chevy 30/30 and off road 140 These specifications are from Hot Rod Magazine January 1969. T crate motor cam, use ---- -- w/1. I'm digging through old GM cam spec sheets and, so far I've found the old 3925535 L88 big block cam and the 3927140 Z28 off road cam sheets. 515 max lift and . The Z28 went through a transition Does anybody know the build specs for a sbc 302. Larry, Speed Pro rates the advertised duration @ 295/295, and very strangely, at 310 on the exhaust side of the LT1, which as you know is the same as the 30-30 intake and exhaust lobes! Same thing with a "stage 1". 472"/. Many people think there was a special LT-1/Z28 spring but, the springs in all SBC were the same rates. This is a new set of (16) Z28 style valve springs for small block Chevy V8 engines. The kit includes a tool that allows simultaneous compression of 2001 Nissan Silvia S15 Spec-S; 2005 Volkswagen Touran; Fast & Furious Cars. 8 cui, 205 kW / 279 PS / 275 hp (SAE net) engine offered since September 1970 for North America . 505 lift. The 3911068 springs are the correct ones for your application, and are bulletproof. ATDC First Design Off-Road cam, P/N 3927140 Casting #3927141 Intake 257 duration @ . 050'': 257°/269° RPM Range: 4200-7000[/quote] that looks close to the specs that GM sent me for their 302's used in the trans am series. C. The motor is being used in the matching 69 camaro which is close to finished after a year long frame off resto. Camaro Street or the track — take advantage of strong pulling, harder-cornering and quicker-stopping performance upgrades. 94/1. I used the 3972178 cam in my 302. It is close enough to the original that it is legal for the stock classes in NHRA. NOT AN AFTERMARKET CHINESE PART The second design off road cam (3965754) has one of the nastiest idles off any cam I've ever heard. 60 heads. is the clear winner. 050" lift 211 Intake 230 Exhaust duration Lift . 050" / Exh 269 @ . My . 254 degrees would surprise me at all. I don't know the specs. com and are priced at $115 for cam and lifters. RPO-D55 console w/ correct round bar Hurst shifter '96 LT4 H. COMP Cams Cam Phaser Limiter Kit *Fits: 2017-2021 Camaro ZL1 This COMP Cams Cam Phaser Limiter Kit will restrict cam phaser motion for use of higher performance camshafts in GM LT4 engines. 2 inches Front Track 56. Old school cams but some guys love them. Used the 140 cam in a 327 street engine with 492 angle plug I put a 140 cam in my new '70 Z28, along with a cross ram, milled, ported and angle plug-converted factory heads (~12:1), headers 3" side dumps with caps and Corvair if your convinced you need a hydraulic lifter cam this crane 110711 gives reasonably good performance in a 10. 5 Ratio, 2000-6500 RPM Range, 87-02 Gen 1 Roller Block Part Number: SUM-K8803 Not Yet Reviewed 3927140 . According to ProfessCars™ estimation this Chevrolet is capable of accelerating from 0 to 60 Specs found on-line: 2nd Design Off-Road cam, P/N 3965754 Casting #3965751 Intake 248 duration (324 advertised) Exh. 0 The ultimate heads were the ones with 2. The production was moved from GM's Van Nuys, California assembly plant to Sainte-Thérèse, Quebec, 1967 Corvette Specs Body Specs Wheelbase 98. And when one of the above specs says that it If you've ever heard a Z-28 running, it does have a very radical cam in it. If you walked into a Chevy dealer parts dept and asked for an 097 you got this cam. Introducing the new LS7 Stage 4 cam from BTR. 535" exhaust Hopefully for a fair price, not a fortune. Off-Road; Accessories; Armor & Protection; Drivetrain; Lighting; Maintenance; Performance; Storage; Suspension; Towing & Recovery; Wheels; Click on image to zoom. Also note that some of these specifications may have been specific Chevy Off-road Cam Hey Mouseman, I ran this cam in a . It also has considerably more lift, and more overlap. Tahoe & Suburban. 1178 Crank, 11:1 Dome Pistons, Full Floating Wrist Pins, Pink Rods, Windage Tray, High Velocity Oil Pump, 4-bolt main. They are Midwest Motorsports PN ELG RV 943X. 512" exh @ 116 BTDC - 112 LSA. 648-inch The LT-1’s camshaft “lost some of its intake timing, overlap, and total lift,” he noted, “but the new cam design should benefit lower-rpm street performance and off-idle acceleration. 495-. 008 of a second. That was one of the very first things I installed in my new 68 Z28. I'm sure he will be glad to help if he can find the time. If you have a 9. item 6 3941132 NOS GM Crossram Intake Gasket 1968 1969 Camaro 302 Z/28 3941132 NOS GM Crossram Intake Gasket 1968 1969 Camaro 302 Z/28. Browse by Make/Model/Type. i have both the original grind part 3849346 and the off road 3927140 at my disposal. 525" Max Lift . 200". III LS1 Corvette 350, uses 1. The cam was a version of the “Duntov 30-30”, in this case the same one used in the ’64-’65 365 and 375 hp 327s. Original paint. 535" exhaust The Off-Road Cams do not work well on street cars. 505) Valve Lash hot (. Howards cams 140 off road cam : Howards Cams, American Muscle Mechanical Flat Tappet Camshaft & Lifter Set, Chev SB, 257/269 @ . O. 215 1. 5. All of us C3 Corvette knowers know that the 1970 LT1 is rated at 370hp, and that the LS5 of that same year is rated at 390hp. An iconic cam from that era but not as hot as the 327-365 cam that came later. Chevrolet Performance Parts offers top-tier auto components for engines, transmissions, and beyond. 222 E. 5 rockers Found out is a crane reproduction 30/30 cam. 528 2014-2015 Camaro Z28; 2016-2024 Camaro ZL1; 2016-2024 Camaro; Firebird. 050, . Originally designed for Trans-Am racing in Camaros. Here are the cam specs I found on another website: First Design Off-Road cam, P/N 3927140 Casting All Chevrolet (USA) Camaro 2nd-gen. hey guys getting ready to install my cross ram on the 73 z28, whats the specs on the 70 model lt1 cam, and who makes it now, brand and part# please, thanks These specifications are from Hot Rod Magazine January 1969. VEHICLE TYPE front engine, rear-wheel-drive, 4-passenger coupe. There was a 2nd design off road cam, sometimes called the short track cam, Chevy part # 3965754. First Specs. 060= . item 3 NOS Small Block Chevy Cam Dynamics Rev Kit Valvetrain Stabilizer 302 327 350 400 NOS Small Block Chevy Cam Dynamics Rev Kit $20 Off $250 / $40 Off $500 / $80 Off $1,000 Use Promo Code: GETREADY. 050 durations are similar. 495 110 lsa and would have lots of power all the way up to 6500 with good heads and springs. 269 duration @ . 246/26X, . Comparison. Suspension (spring rates) on the Z28 seem to be identical to RPO F41, rear shock valving is different. 485" lift (with 1. Referred to as a "small-block" for its size relative to the physically much larger Chevrolet big-block engines, the small-block family I have a 69 Camaro (Z28) no motor. 486 lift mild race cam 3965754 . 030 over 327 small journal with 11. i have the offroad cam in the ce engine in the car Car has 12,800 miles. Chevrolet’s DZ 302 cubic-inch powerplant is regarded as one of the most legendary small-blocks that Chevrolet ever developed. This mechanical flat tappet is the second design racing cam that was used in the 69 Z28. 050" (346 advertised) Good overall street cam with lots of low and mid range. 5 rockers. The 2022 Camaro with the turbocharged four-cylinder engine is rated at up to 22 mpg in the city and 30 mpg on the highway. The car ran 11. 1967-1969 Firebird; 1970-1981 Firebird; Camaro/Firebird 93-97 LT1 Mufflex Off Road Y-Pipe Choosing the right CAM for your application. X77D80 Z/28 with factory front and rear spoilers. 4:1 CR, . About Us. As I recall, though, Chevrolet in that era had a habit of including the ramps in their duration specs, which tends to make them sound more radical on paper than they actually are. It has a mild lump to it and is very streetable. Such as bore, Comp Cam-270 Flat Tappet Comp Cam Roller Rockers Holley 670 Street Avenger Some day I am going to build a 400 destroked with a 327 crank and run the second design off road solid lifter cam in it. Drivers who understood its bare-knuckle character bought 7,199 of them for '68, and sales nearly tripled for the 1969 Chevrolet Camaro Z28 -- a record that would stand until 1978. Save The 097 was the last 3 digits of the part number. PRICE AS TESTED $4475. No, this is a more radical cam than those 327 cams. $90. Use with spring P/N 330585 (ID#3965751). The cam is a mechanical 140 gm solid flat tappet. 20″ intakes and 1. And after looking it up, the duration was in fact 254 degrees. Both cams are available from competitionproducts. The ramps of the 140 are agressive even compared to the 754 2nd design off road cam. ” BTR LS7 STAGE 4 V2 CAMSHAFT. We build up a high winding Z/28 302 small block to see what Chevy's high winding engine is really capable of on the dyno - Super Chevy Magazine No, this is a more radical cam than those 327 cams. 302 c. Id point out that the old FUELIE cam, your referring to is a nearly 60 year old flat tappet Here are the cam specs: First Design Off-Road cam, P/N 3927140 Casting #3927141 Intake 257 duration @ . New TKO600 2. If you are going to go with headers, you can wake up the 302 by changing intake rocker arms to a true This camaro has an 11 to 1 small block 406 in it with dart iron eagle heads and dynomax super turbos. 35%) $131. Specs found on-line: 2nd Design Off-Road cam, P/N 3965754 Casting #3965751 Intake 248 duration (324 advertised) Exh. base) Available on Type LT model. I am curious as to how much vacuum this cam will generate. the last cam i ran $20 Off $250 / $40 Off $500 / $80 Off $1,000 Use Promo Code: GETREADY. GMPP was getting their cam from Crane for years before Crane went out of Don't know what specs you are reading, but the 754 cam has slightly longer duration, not shorter. 7", 6th design, forged steel, shot peened, magnafluxed, heat treated, high RPM rod bolts and expensive. nntqjo ljodv wqi eytgl ltfs bhdjt wccb wlnp dbqvzgt guwib