My friends 350 Pontiac stocker has gone 10.80@123, at 3380lbs with small valve heads that flow right at 200cfm, at the max allowable lift of .420”.
How well does that flow line up with what the various ET calculators say the motor has to make for horsepower to reach that performance level?
Oh, and the 400 combo, with the bigger valve 220cfm heads has gone 10.37@127.