340 Street Build

Just for grins I ran the numbers through the Wallace calculator for that old SBC 350 I had in the 73 Nova. I was bored 0.040 over with 10.5:1 TRW forged flat top pistons. Can't remember what cc head that would be with but I suspect maybe a 62 or 63cc? The heads were off of a 67 RS Z/28 Camero, 302cid engine. My buddy wanted to put a small B&M blower on the Camero and wanted to reduce the combustion chamber size/compression, so I swapped him my heads for his.

I ran the Comp Magnum 280H cam Ica (66deg ABDC) and had to use a 12.25:1 SCR to get close to the 205psi cylinder cranking pressures it had. Wallace numbers were 9.63/202.4/166. I knew I was running higher compression but no idea it may have been that high and with iron heads.