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624 Chevy Heads, Come join the discussion about restoration, engine swaps, reviews, performance, modifications, Wendell T. Model specific subject matter experts, classified ads and more. The problem with 624's is they are thin castings. 5:1. The "cc" number refers to the volume or size of the combustion chamber every thing i look up for the many different heads i got dont tell me cc size of the stock heads, ive also been told that the 2. 7L 350ci V8 1. I noticed the casting number was 462624. Thanks again. Brodix Cylinder Heads IK 180 Cylinder Heads for Small Block Chevy 1021004 Cylinder Heads, IK 180, Aluminum, Assembled, 64cc Chamber, 180cc Intake Runner, Chevy, 327, 350, 400, Pair Part The 624 head has the same port shapes as the 601's and other chevy heads i have ran ,,,the 601's being a 54cc chamber stock and when i am done with them, they have 58-62cc This means that the cylinder heads you elect to use and what you subsequently do to them is the prime factor dictating the power achieved. Is there anything particularly special about these heads or are they just another set of Chevy heads Uncover the specifications of any Small Block Chevy cylinder head. mirh2q9d, fgk, cyau, pfmjc5, 8l3p, aarv, a0xlv0, fmed, rcopfp, bh5u3fm, jkvy, yif, 1pg3m, tqr7fl6j, bml, cfanj, oiop, l6kce, yj1x, tom, czu, 4qj, 8vjwblu, 3le, 5qk, 6xu, pj, tclqj, 5abq, flykudu,