600 hp is very conservative, my 9.5 to 1 comp. 4 inch stroke 408 , R3 block, Indy 360-1 heads, 600 lift mechanical cam made 539 hp / 502 tq , very mild to run pump gas, ran 10.69 in my 3,150 lb. Dart it ran good until the crank cracked luckily nothing else got hurt, it has the potential for tons more power with a roller cam , more compression , and some head porting. There is an acquaintance of mine that has a small block Mopar that is around 950 hp.
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