For comparison sake I had a 390 LA engine in this car before. It had 2 points less compression, 11:1, a similar sized solid flat tappet. And heads that went 280@.600 That combo went 10.75@123 on pump gas.
2 points more compression, 75 more CFM of head flow at .600 and some corn juice fueling it. How much ET is that worth??? Hopefully enough haha.
