[Roadsters] U20 Crank Pulley (Harmonic Balancer)

[Bill Cole]

Dan, I can think of a few reasons that could make it hit the cross 
frame, first you will want to make sure that the outer ring on the front 
balance/pulley is not separated from it's hub.Also make sure that you 
have the lower profile 5 speed crossmember, the taller 4 speed 
crossmember will make the pulley closer than it should be. Then make 
sure your engine mounts are solid and not mushy. Last thing is a long 
shot but it can happen and it will effect the engine placement, if the 
left side engine mount had been replace with an early model style, some 
people replace the cast iron bracket  with an early model bracket when 
they switch to an early style altenator on the right side of the engine. 
I hope these ideas may help...Bill