thepistons are speed pro powerforged flat top w/2 reiefs 5 cc #844-L2491-30,GM performance heads are 210 cc int. w/ d shape ext. 58 cc chambers that been milled .010 for clean up dont know thw cr sense they been cut,and have not been flow tested,added the 202 int. an 160 exh. valves they were ZZ4 aluminum heads #10088113, stock deck height,the cam was a crane #270-WG-1064R 234/244 @.050 -488/510 lift, intake # 955-061040 / 4150, head gasket are felpro #1003 4.100 bore .041 thick, see what it will come out to be, thanks Bill