Greg, I tested that motor with non ethanol 91 octane, not regular Sorry for the misleading comments on him being able to run the motor on regular He wanted a motor he can do burn outs in a 1969 Coronet super Bee That motor , with the proper torque converter, should shred his street tires As far as retarding the cam, all the Mopar motor I've dyno tested and done the testing at the track, didn't like the cams retarded That cam is ground on 110 LSA, I don't have the cam timing notes on that motor now but I think I put it in around 105 to 107 ATDC( 3 to 5 degrees advanced) on the intake lobes I'm anxious to see how it drives in the car I've had 446 and 452 C.I. iron headed pump gas motors( with bigger cams, similars size carbs and intakes) make more HP than this rascal did