It really didn't have anything stock to it. It had port and polished 202 heads, 11 to 1 Compression, Isky solid cam, 4 bolt mains, and an Offenhauser single plain intake with My Holley 780 on it in My 69 SS427 Impala. Actually I never checked the block to see what year it was or run it on a dyno. I had 55,000 on the L72 when I pulled it. NICK L72