any stroke of 4.5 or longer you better use a good crank....race with several guys who have broken cranks...not pretty after that...callies is a good one for the $$

+2 on the better crank. At least go with one of the mid priced cranks like a Callies or a Lunati. Crower makes an excellent one for a bit more.

Ok I haven't heard to much about the Scat. Not knowing much about these cranks, are the Scats any good at all??:stupid:

Go with a Callies they have a good product at a decent price. I would personally stay away from scat!

Callies or Lunati, same forgings, cant be beat for the price.
Made 2500 hp with a Lunati held up pretty good.

Piston and rod angle
 

Thanks Eddie for sharing your experience! Its nice that respected engine builders such as yourself and MrHorsepower1 (Dean Gellner) take the time to educate here.

Do you feel a better rod angle is more important than a taller compression height on the piston? The really short pistons worry me? How about piston material 2618 or 4032 ?

Thanks :drink: