Ran a 400 in my 74 cuda 400 was out of the crate replacement block.My combo was crane dual pattern cam .467-.494 offenhauser 360 degree intake 750 vac holley 1 3/4 headers with a 360 converter heads were 346's no work other than valve job back cut on valves.Gearing 3.55's ran 13.40's through...