Sorry ,but there is a slight difference in a car that launches with 4.56 gears and a low geared 1st in 3 spd 727 at 4400 rpm vrs one that has a 1.76 low PG and 4.10 gears at 3500 rpm .BTW my 408 is a 10 to 1 motor with a .484 lift 235 duration cam with unported iron heads ...



Well then you might as well make it slower and put a little chevy motor in it to go with your chevy trans and slapper bars.