Originally Posted by Tod74
STUPID QUESTION BUT HERE GOES....
Did you make sure not to mix up any rod and or main caps? Also..if your crank has a large fillet radius and you do not have chamfered bearings OR you Do have chamfered bearings and you mixed up the upper and lowers, it will do that.
X2 on what todd said. Did the crank spin easily without rods and pistons?