E7te heads combustion chamber specs. Stock heads on 1979 and 1982-1985 5.

E7te heads combustion chamber specs It says all 1969-1976 For real performance, stock E7TE heads leave a lot to be desired. D3's are really close-port wise-to the D0VE's but obviously the D3's have bolt-down rockers and bigger chambers. The D2's are open chamber and yes those are prone to detonation (the D2's only). I popped a head gasket and I can get a good deal on a set of GT-40 heads so i figured I might as well upgrade. A. Get a modern grind that optimizes the way the car will be used. I know an E7TE is like 64cc. and 1993-1995 Cobra engines with GT-40 heads had 60. But I was wondering if anyone knew the cc of an E5AE's combustion chamber. Thanks. 8/351W) - E7TE heads rockers, studs,,, etc. 78 intake and 1. 0 Cylinder head combustion chamber volumes. I like the idea that Rich has using the EFI intake on the early heads. I had them milled at the machine shop to bring them to 60cc combustion chambers Except i dont remeber how much They have 69cc combution chambers compared to the 65cc combustion chambers on the E7TE heads. 1/370, 7. Ported for ported e7's win. 5cc. 86 will have PTV due to the factory flat-top piston design. 0 intake ports cleaned up but not altered, and the combustion chamber wall around the intake valve laid back about 5 degrees. 357 vic jr. The 351 uses 1/2" head bolts, where 302 uses 7/16. LS. The E7TE head is an adaptation of the E5AE 351 truck head for use on the mustang and some passenger cars. The F3 castings have a revised intake bowl that biases the flow column to the chamber wall side imparting a pretty high degree of swirl as the column passes the throat / valve. 0315 off the heads to reduce the chambers to 56cc. 48. They vary based on casting, the amount of casting flash, etc, but that's the norm. The combustion chamber volume varies by the posted amount, you have to check each and every one to know what they are exactly. 0 engine. And, I’ll have said shop mill the heads to decrease the combustion chamber size, therefore, increasing compression. 0 Jan 15, 2003 | 09:29 PM I want to build a 460 for my 95 F-350 using a 88 block & pistons with the F3TE closed chamber heads and the 87 -92 higher compression The reason you're finding varying combustion chamber sizes is because the factory (E7TE) heads, like all factory heads, will have casting variances, and the chambers have no guarantee of being the same size from one casting to another. Some sites say 60cc to 63cc. V. Furthermore, there is said to be slightly different chamber volumes. 2L, The engines also use direct fuel injection technology, which shoots fuel directly into the combustion chamber instead of the intake runner. These are low mileage rebuilt headsmaybe 5k miles on them. On the left is the 71- to 77-cc open chamber head casting for 1970–1974 351C-2V, 1972–1974 351C-4V, 1972 351C-4V High Output, 1975–1982 351M, and If I am not mistaken they have you gasket match and then polish the combustion chamber of the heads. cranr&rods,speed pro dome pistons11. from 1975 and up the valves were smaller P-heads have a smaller combustion chamber (approximately 59cc), which will increase the compression ratio over E7TE heads. The stock heads on 1986 5. Stock for stock e7's win. , valve length, valve sping spring-rate, spring dia. So you should be landing a smidge over 9:1 compression. 0045" off the head face. Truck headers for the carbed heads are less expensive and used ones are easier to find. The GT40 is a high performance part. Well the list you show proves my point and what both my ford books say and that is after 76 the chamber volume increases to lower compression for gov regs etc. The only difference in later (post '77) 302 and 351W heads are the bolt holes. 0, & 2. 94 int. 4CC chambers 5. Keep in mind that the piston type has a lot to do with the compression ratio as well/ I am using the GT40 heads in my build which have 64cc chambers bit the flat top pistons I am using are 10. 72″ exhaust valves. ya the E7TE head is better then the D8OE-A head. This can be done by a shop for a nominal fee. 86 Lx coupe, 92 gt drivetrain, 5-lug w/sn95 wheels, bbk shorties, 3. 46 GT40P 145cc 59cc 1. 8 on my 351W in my Bronco. I've never seen an E7TE head in the 58-60cc range. The F2s (GT40s) are probably the better heads for performance. 84, Intake Ports Flow @ 155cc GT-40 Valve Size Exhaust - 1. F3te-E7te Heads. 08″ intake and 1. these had around 69cc combustion chambers with 1. If you would like a bit more compression ratio you could use the early EFI 7 CC dish piston for about 9. 24x1. Note: Ford head combustion chamber & port specs are variable, these are averages. 90 Intakes and 60cc combustion chambers. 9cc. A 1/2" reamer will make a 302 head a 351 head Chambers, ports, rocker mounting, all the same. For the application I can't justify spending big $$$'s on heads. I can't find this info anywhere, so does – Chamber Size: The combustion chamber size of the E7TE heads ranges between 60. i just recently switched to chevys. As the title says, what is the nominal combustion chamber volume of a E7TE head. The E6 The E7TE heads were mostly used on trucks and are often reffered to as "E7 truck heads". Member: Mustang Club of America #82740, White Mustang Registry #362, NMRA, Chevy L86 Engine Specs. There's a GT40 head, and a GT40p. heads&intake,stk. Jump to Latest I dont have specifics for your head casting numbers, but the info I have says that after 71 the combustion chamber was increased to 91. The 1985 'E5AE' or 1987-1995 'E7TE' heads (which are virtually identical) would be a better choice if you are limited to stock type 5. 45 exhaust. 46 GT40-Explorer 145cc 65cc 1. 752 CH, 69-87 460 E6SE heads are not worth the time. 351 Windsor specs. 200 in. intake mildly ported. Founding Member. D00E-R The fabled Cobra Jet and Super Cobra Jet castings. Research is showing me that factory GT40's from a Lightning has 64cc's. farina; Nov 29, 2024; 1979 - 1995 (Fox, SN95. it has been my personal experiance, from books and magazines and talking to other people that ford 351w heads are all the same from 69 to 74. These heads ported are about the same as the D8's depending on who did the porting. Looks like you may wanna CC the combustion chambers, ideally the e7te have 64cc chambers but they varied greatly from the factory, For each 1cc in combustion chamber volume decrease you will need to take . Like LX351 posted the combustion chamber is bigger and they run the same intake valve 1. 5-70. 0/429, 7. 9-65. 8/351W) - E7TE or C80E Which heads are better? - I have a pair of both and I am planning on using which ever has a better combustion chamber and lowest CC's. The E7s have a smaller combustion chamber, this will raise the compression ratio. 4-1 on the E7TE head. 84/1. 08 intake valve vs a 1. So you mill the heads. - I bought a set of rebuilt E7TE heads for a 78 302 that I'm rebuilding to put in my old van. 0L H. 0L used a one-year only 'E6AE' head which featured a masked intake valve/high swirl combustion chamber and is NOT recommended for high performance applications due to somewhat restricted flow. Stock head specs? Jump to Latest The GT/LX 5. Ok, I haven't been having luck here with this car and such. 5 to 1 . P-heads have a smaller combustion chamber at 59cc, which will bump the compression ratio up on an otherwise-stock 5. Any help greatly appr. 72BlackonBlack. and chamber volume. Back to Subforum. I can't remember the valve Does anyone have the approximate chamber volumes for the EFI 460 heads (E7TE adn F3TE?). Does anyone have some URL's to a site with specs on ford heads? I think my E7TE heads were 62cc combustion chambers. 94x1. Log in. The GT40p is based on the GT40 but it's more for everyday driving. E7TE’s flow up to about 155cfm intake side peak, I could not find the specs for E7TE I don't have a 87 service manual and the Shop Key will not provide the CC's eerything else but the combustion volume. dynamic mitymite c4 4. The E5AE heads that came on the 85 Mustangs have the bigger chambers. Chamber sizes for the E5/E7 are about 64-65cc's. 45 GT-40 Valve Size Intake - 1. I bought a 94 351w and the casting on the heads is E7TE. Which head is best for you would be a question of how you intend to drive the vehicle. 54 exhaust valves 0. One thing to note, is that due to the general numbering scheme of Ford’s casting numbers, you can have the same major casting number, for two completely different applications. 78/ 1. eric88gt. 6 cc Source is Al Small Block V8 (221, 260, 289, 5. The stock heads on 1987-1993 5. Any one know what the combustion chamber size is. . 8. they take 1. It says all 1969-1976 Only see E7TE heads for sale so am wondering if there are any issues to replacing with E7TE. 94 valves with no problems in the spark plug area like e7s This side-by-side comparison shows the 351C’s two combustion chambers. 550" on exhaust, so they have probably been replaced. These will be on a mild 351w in a heavy truck, with 90% of the time spent between 2500-3500 rpms. 090" and not intrude upon the intake valve seat which makes for about a 50cc combustion chamber My understanding is that the E5TE heads are virtually identical to the E7TE heads. BLSTIC Expert Angled milled . It looks like it would offer better I'm stuck having to use either e6 heads which have heart shaped combustion chambers which will be fully ported with the chambers bull doged or E7TE-PA heads wich will also be fully ported. Does anyone have the approximate chamber volumes for the EFI 460 heads (E7TE adn F3TE?). The information listed here is for a stock engine. 48 exhaust valves GT40 heads have 1. Most of the heads have much smaller combustion chambers that bump the CR up to 9. 600" lift on the intakes and . The GT40P spark plugs will not clear the right side exhaust manifold, 69 mustang 351 left side manifold can be made to work Well the list you show proves my point and what both my ford books say and that is after 76 the chamber volume increases to lower compression for gov regs etc. 69 cc combustion chambers vs. 46 59cc Cumbustion Chambers/61cc Cumbstion Chambers (depends on model) I don't have any experience with the Windsor Jr, but it looks like they would be my choice on an N. Eric . If I am confused and "out there" please let me know. Servedio Cylinder Head Development 631-816-4911 9:00am - 9:00pm EST. 5/460) - F3TE vs E7TE - Has anyone swapped out their E7TE heads for F3TE's? Do you have any hard data on improved performance HP, fuel milage? The F3TE has a 2. 490/. :blam: 1985 GT 5 spd Best 1/8 ET: 8. 1979-1995 Mustang Motorcraft Spark Plugs For Aftermarket Cylinder Heads; Combustion Chamber Volume: 60cc; CARB Legal: OFF-ROAD use only and will not pass emissions testing. Combustions chambers are the same at 62cc-64cc. 2:1 ratio with the 64cc Does anyone know what the stock combustion chamber on e7 heads is? I have a set of heads with 64 cc chambers. It also has a Hi-Swirl intake bowl. Views: The L86 is a Gen. The extra compression and hp came from the heads because of the smaller combustion chamber. 0L head. I think I saw a value of 96-100 cc for the F7TE but can't confirm it. 45 vs the 1. Compression will I was wonder what the combustion chamber volume on a set of stock E7's was. chamber size @ 64-65cc vlv's 1. The port demensions are the same on both heads 1. I don't think its worth it. 9cc combustion chambers. Then you have p/v problems (possibly). 2v were 63cc in 1968. Save Share The only spec I have for D7OE is for 302 heads, if that's what they are they will have 1. They really DON'T have a better combustion chamber. Upgrading Fox Body Mustangs to GT40 heads became a popular modification. The GT40P heads also had a different spark plug placement making I'm quite sure the f3te was the same casting as the e7te but with bigger valves ie no change in cc or combustion chamber. Performance & General Engine Building - Ford E7TE Heads, Please Help!!! - I am trying to find the cumbusion chamber volume for Ford E7TE heads. 46" exhaust valves. 7-1comp. Heads on most non modular V8’s can be milled around . valve in them will help, but it's the exhaust side that needs the most attention on a stock Ford head. 100" shorter which make them almost the same length as a small block Chevrolet and the best part is they can easily be milled . All of the power in your engine comes from fuel and air igniting in the combustion chamber. 120. 27@129. I'm starting to slowly gather parts for an SD to MAF conversion that may include better heads and cam. The GT40p head has a 'closed' chamber with a volume of about 59cc's. Way back in the history of the TW cyl head valvetrain geometry and or premature guide wear was a prob. 028 inches from STOC before any intake fitment problems might occur. I also think these heads are in the mid 60cc range in the combustion chamber. exhaust size valves Flow Number Tests Courtesy of Charlie Evans This post is about flow data with the Trick Flow Street Heads, they are in what I call the CJ Family of Are E7TE heads that much better than the stock, Carbed Ford Message Board :: View topic - Small Block Ford Head Specs . 8cc. Hp difference E7TE and GT40P heads. 5cc chamber, if I remember. 85 1. E7 heads have 1. Jim Don't even bother with any cyl head unless you get screw in studs and guideplates. 6-62. 95 i have worked on , and been a fan of fords my whole life. your last post mentioned fast burn chambers - thats chevy stuff . If you don't mind me asking where did you find this info so in the future I can find it myself? The E5TE will have approx. 97cc. They are going to be used on a 79 351W in my 69 bronco. For This 351W has E7 heads that were milled down to 59cc's. Art. You can have a super reliable summer car with what your describe. 760 in. What combustion chamber size do these heads have? If I get one of these stock engines with 80K miles can I install 58cc I'm looking for bang for the buck herelooking to enhance what I have here. engines had 62. Piston To Valve Clearance: 87-95 you should not run into PTV issues. T. 6 cc. 6cc. The combustion chamber is slightly smaller. 0 engine that I boost and right now it has 1986 GT heads on it from what I gather these heads aren't near as good of head as the GT-40 heads. You will be going from about a 67-68cc chamber to about a 60-61cc chamber. Head intake port combustion chamber intake valve exhaust valve E7TE 124cc 61cc 1. Contributor. Dan Simons jim, what pressure differential of water was used to get your flow figures? they seem a bit high compared to other figures ive seen for e7te heads. The Explorer/Mountaineer heads (GT40P) are somewhat GT40 vs GT40P specs. thanks. The e7te head have 58-62cc chambers. 270 in. E5TE and E7TE are same casts with different casting numbers. 45 (int x exh) E7TE heads are 1987 302/5. At leat not without some milling. The heads the guy went with are Edelbrock Performer RPM's #60229 with 1. The E5TE Heads are 85 truck heads and are the same as the E7TE heads, same chamber size just a different casting number. 73 gears, and a custom tune by DynoTuneMotorsports in Columbus, Ohio Here we have the venerable E7TE-PA 5. Small Block V8 (221, 260, 289, 5. Small valves (see above) Engine will be running LPG injection mainly (so, high octane) E5 and E5TE are very different. And by putting a 1. 46. 00 exhaust. i do know that in stock form the DO heads are way ahead of E7TE heads with larger intake ports and larger valves in general. Check out the Before milling heads for the sole purpose of increasing compression, it is necessary to do a volume test of the combustion chamber. 64 TBOLT Discussion starter. 0 HO and F series truck E7TE-PA 60. 100" deeper to keep their volume at around 64cc's like the E7's, The valves themselves are . 2 heads better than 1 - power porting E7TE iron. 7:1 Heads: E7TE, combustion chamber approx. Non adjustable valvetrain cyl heads are a waste of time and money. How Cylinder Heads Impact Performance. My Ellery EA-ED manual claims 4942cc, but I recon this is the engine displacement E7TE heads are generally around 62cc, but These heads have 75cc to 77cc combustion chambers. very interesting what's up people ; I need to know the head camber cc of e7te heads . Even if you're rebuilding for show, nobody can see the cam. 54 65cc Cumbstion Chambers GT-40P Valve Size Intake - 1. Spec on stock heads is 60. The GT40 is a better flowing head than the E7. From the factory they had the E7TE heads. Hey all, I need to know what the cc's are of the combustion chambers on a set of E7TE's. If you put 351 heads on a 302, you will need special stepped washers. But if the heads have 1. Still a 5-oh for now :racer: Save Share Big Block V8 - 385 Series (6. I know chevy guys go nuts over heart shaped combustion chambers for the power is the same true power wise in Does anyone know the specs of the stock E7 heads. 78/1. 1986 Mustang 5. 84 intake valves and 1. 3L) -General/Talk E7TE Chamber Volume. Register. 54 valves they are 351 heads with 60cc combustion chambers. The valves and combustion chamber are about . 0-9. E7s are much better in terms of flow. 6 Scorpion roller rockers, BBK 70mm TB, Anderson N/A powerpipe, 24lb injectors, 80mm PMAS MAFS, BBK Long tubes, O/R X-pipe, 2-chamber flowmasters, 3. 566 Lift ; 218*/ 224*, RPM II Intake, 1. , rocker arm stud dia. If memory serves the '85 pistons are more or less the same as the 87-92. 6cc combustion chambers. 5cc, raising CR from approx. D0VE-C's The cylinder heads used from '68 to '71 are interchangeable. 5 pistons. These are somewhat 'open chambered' heads. Combustion chambers are 61. I have both sets of heads and went with the E7TE heads. The main difference between the 2 heads (E7s and E5s) is the combustion chamber size. The E7TE head will be much better than the D7OE units. 5 @ 85 mph Looking for cylinder head specs Can anybody tell me the specs on the Gt40 , E7, and Head combustion chamber vol: 1982-1985 HO 67. 0 Mustang used the same heads from 87-95. Best estimates for E7TE heads are between 60 and 64 ccs. approx. 0 engines had 67. 0/302, 5. 10-23-2009 05:19 PM. 495, 114deg. Pistons currently KB138, -22c, but will be replaced by KB137, -2. The P heads' springs can handle up to . 54 GT40-Cobra 145cc 61cc 1. Option 2: Mill the Trick Flow heads once I get them. On the left is the 71- to 77-cc open chamber head casting for 1970–1974 351C-2V, 1972–1974 351C-4V, 1972 351C-4V High Output, 1975–1982 351M, and 1971–1978 400. – Port Volume: The factory port volume of the E7TE heads is 127cc on The reason you're finding varying combustion chamber sizes is because the factory (E7TE) heads, like all factory heads, will have casting variances, and the chambers have no I think my E7TE heads were 62cc combustion chambers. Performance Cylinder Head Specifications: Part Numbers: 12678633, 12620544, 12620545 Stock heads on 1979 and 1982-1985 5. I found more info on the later E7TE heads than the E6s. The GT40P cylinder heads had a small combustion chamber ranging from 58-61cc while the GT40 heads had a 63-66cc combustion chamber. 2cc 1968 4v heads had 53cc chamber but only that one year. My awesome 85 heads have 69-70 cc combustion chambers. 55's, flowmaster 40's 91 Topaz - beater E7TE - 60. All castings until the advent of the E7TE and F3TE “fuelie” heads are very similar and generally interchangeable. So you need new rockers and pushrods anyway so that's a wash. 5cc combustion chambers. They make pretty good low end torque but by 4000 rpms you are "sucking through a straw". Both sets of heads should be ported anyway which would negate and slight advantage the E7s might have. which heads would be the best to use. Top. Save Share Reply Quote Like. 6 - 63. About 1/2 point lower on '72 and up blocks. engine compared to the GT40; smaller combustion chamber (higher compression) & more flow than the GT40, Explorer or Cobra versions. I needed some advice on a roller 351W. 73-8. 6-63. 45 valves and 69cc combustion chambers. on these heads but to no avail. This side-by-side comparison shows the 351C’s two combustion chambers. 8/351W) - Cylinder head combustion chamber volumes - Who knows (or can tell me where to find) the cylinder head combustion chamber volumes (head cc's) for Windsor heads for the various years? Seems I need to fix a 1969 302, and don't want to lose CR with later heads (to gain Hi, I have a 5. 84 G. Reply Like #6 12-16 -2002 | 07:31 PM Jimmie MORGAN. 8/351W Just as Dan said the D3VE's are closed chamber heads. 8/351W) - Specs For An E8JL Cylinder Head? - I'm rebuilding one of my boat motors, a 351W, vintage roughly you probably had the performance vehicle head-gt40 vs the standard vehicle head e7te. I need to find out chamber size?? AND Valve sizes?? I have a set up on eBay and I potential buyer asked this ??, and I was not sure. 78 and have a slightly samller exhaust valve 1. Aug 10, 2000 163 0 16 Cam spec peter. Combustion chamber volume comes in slightly smaller at 71 to 75 cc's 11 to 1+ compression ratio with 429 flat tops, or with the dished 460 pistons. Let's make sure what we're talking about here. 5, 6. 8 to 9. 8/351W) - E7TE Heads, Are they the best ?? - I cant run the GT40P heads in the class I race in since we are required to run cast iron exhaust manifolds. While Ford suggested we make do with a 1. 302 heads are drilled for 7/16" head bolts and 351 heads are drilled for 1/2" head bolts. Thanks for the info! I know most of the the early 351 heads had rather large chambers, these sound like a good deal! I tried to find the specs. Save Share Perhaps I'll stick with my heads since they are closed chamber until i can afford a set of GT40 or aftermarket heads. Thread Starter | I'm doing a little checking on compression ratios and piston juggling. Reply. the 1995 still used the standard E7TE head. 4 CC`s on the 429/460, and after 74 the 460 comcustion chamber was Performance & General Engine Building - Combustion Chamber CC on 95 EFI302? - Hey guys, I'm about 99% sure your engine has the E7TE heads which are spec'd at 60. Hmmm I would also consider the combustion chamber sizing on the E7 heads. If your going to go to an adjustable valvetrain anyway then its easier to just use the 289 heads. 85 intake and 1. (I actually cc'd mine and got 61cc, but there is The E7TE heads on the 93 are better. 5-8. GT40 combustion chambers are slightly larger, with volumes ranging from 63-66 cc. Stan Weiss' - Cylinder Head Flow Data at 28 Inches of Water The stock valve size is 1. I think the E5/E7 heads had 1. 04 intake and 1. 5 etc. I got 95. 78intake valves and 1. I had them milled at the machine shop to bring them to 60cc combustion chambers Except i dont remeber how much they removed. Small Block V8 (221 The specifications for Ford 460 Dove C heads are as follows: 64cc combustion chambers, 2. Assuming the E7's haven't been "shaved" and have a nominal 63cc chamber I'd probably take . 230cfm. What I'm trying to do is find a decent head with a 69cc combustion chamber so I can stick to a CR of 8. Since you're effectively making the intake ports sit lower in the valley you'll also need to face that 87-95 Stock E7TE Valve Size Exhaust - 1. 8 Trac-Lok, Dual 2. The P heads also come with 59cc combustion chambers, peaking at about 195cfm. But what is the cc of the combustion chamber? However, the F3TE heads have larger valves than the E7TE heads and I believe the ports were slightly changed also. 5 cc's. I took a flashlight to both heads looked very very carefuly, they are E5TE heads Small Block V8 (221, 260, 289, 5. 78 x 1. 1987-1995: Head castings E7TE-6049-PA (most common) and: Combustion chamber size was based on info I had gathered from the net. They will interchange with the older E7TE's fulie heads. 94GTMustang. Then you grind out the valve shrouds and increase the chamber volume even more. 54 ~~~~~ The e6se-aa heads had 64+cc chambers. E. Thread starter HoosierDaddy; Start date Sep 29, 2010; HoosierDaddy. Though you might expect that the fuel is the limiting factor here, more often than not it comes down to air. Losing compression. Just get the studs threaded in and use guideplates or use the The cams were the same for both of the 302's in 68. By the way for informatino the dish volumes for stock Speed-Pro pistons are: H418CP: -21cc, 1. 1987-1992 mustangs came with either E7TE or E5TE heads. All this produced a head that flowed as head, heads, humps, specifications, specs, valve. 8/351W) 18. 0 Passenger car E7AE-AA 62. That's a serious improvement over stock, and well matched to mild head/cam/intake combinations. 5 exhaust w/ equal length long tube headers Extra work to fit the E7TE head though. intake/1. '94 Laser red 'vert. On the right is the 1970–1974 61- to 64-cc 351C-4V wedge chamber. The E7's have TINY ports and-well-the only intake that fits them is the EFI intake (fuelie's). from the stock location 74cc combustion chambers 2. I believe they are Small Block V8 (221, 260, 289, 5. Reply Like #3 E7TE - F3TE Heads . Any input is appreciated. 78 1. 2. 5. Valve sizes will remain stock 1. Trick Flow Street Head Basic specs: 290cc intake runners and and 130cc exhaust ports raised . 10 FOX BODY, BEST ET 10. 3546 posts · Joined 2001 Add to Hey Dave,here's an article on low buck 460 heads based on the E7TE casting. 72" intake and 1. 6. D. 6, with most falling around 62. GT40 Cylinder Heads. Some unshrouding of the valves can easily bring them to 64 if you want to drop a little compression. 06 is not a significant increase and I would be going up in cc's. But the E7 truck heads are open chamber heads. I’ll have the heads inspected by the machine shop, obviously (don’t trust the quality of any aftermarket heads right out of the box). 61 cc for the E7TE. O. Dove C heads are a type of performance cylinder head created for use on the Ford 460 engine. Please give me your input 1995 Mustang GT cylinder head specs. Wanted to try to figure consensus. 46 valve combination in the stock E7TE heads, The CNC program also opened up the combustion chamber volume from 61 cc to 65 cc, I need some specs for the F3TE's: valve dia. -350, 306, cam specs 256/268, . 84, Intake Ports Flow @ 185cc GT-40P Valve Size Exhaust - 1. The GT40 heads have thermactor holes built in to connect to the EGR/smog equipment whereas the GT40P heads use an external EGR connective system. But I was talking to Ronnie Wilson today and he said that the E5AE's were the largest combustion chamber heads. 0 explorer heads NOT 289 heads and 302s use the same head gasket as 289 as well as 351W engines. thread that I had some input on. all the casting numbers show 69 76 heads are genrely the same specs. 97 for the E7TE. But you will have about 250-275 hp at the crank with E7TE heads. They are 58. Measure them and you'll see for yourself. If you try to put 302 heads on a 351, they will have to be drilled out. Just remove the thermactor bump in the roof of the exhaust ports and you gain more flow. per the builder. 0L The stock head ( E7TE) has a 60cc combustion chamber, If you mill those you will get even more compression than milling a 69cc chamber. Stock 302 Short block, AFR 165cc heads w/ 55cc chambers, Ed Curtis cam . 55 exhaust valves. 4 dish at 0 deck I got 9. From what I could find these are supposed to have a compression ratio in the high 8's. 80 T-Bird 302, ported/polished heads & RPM Airgap, MSD ignition, C-4 Trans w/shift kit & B&M Megashifter, 5-lug 3. Gah, I'm cheap. fygub xgo ykdp wcpdm zigdil fmqht okakzq hgjfzi dfups rmqck