My daughter's 340 stock stroke, with Edelbrock heads not ported, Bullet cam, pump gas 10.7-1 KB pistons that are 15 years old, lightweight i beam rod, M1 intake, with 4.56 gears. runs 10.60s in the quarter mile. got to be 485 hp +or-, and its just a street car that is not driven on the street anymore. still has the factory radio. have fun with your build and driving it.