[regan wilson]

Well I ran that combo for two years without much luck . I had alot of problems inluding breaking one crank in half and wounding my block . Everyone just shook their heads (telling me it will never work). I guess you could say it was a two year test session . No matter what I did it would leave too hard and come down too hard . Put it this way I didnt win very many rounds . After going through a miltitude of different throttle stop setups I got it to where it worked pretty decent . By the end of 04 I decided it was time to go bigger . I ordered a Callies Stealth 4.75 stroke crank (the first new crank I ever had)and we bored the block to 4.625 and built the 638 .We bushed the lifter bores and everything , it was like brand new . We dynoed on oct 13 of 05 and it made 1224 hp and 930 tq (on the old dyno I will explain later)