For long life, light is right! Take pains to get the rotating wieght down as much as you can to keep the stress off the block. If you are lucky enough to secure a center counterwieght crank, that is a big plus, as it places the forces more opposite of each piston/rod pair, reducing stress by a fair amount.


8..603 156 mph best, 2905 lbs 549, indy 572-13, alky