I've been building a engine for my Iroc for a while now, and I just got to the point where the distributor is going in. The block is a 4 bolt out of a 90 vette and I can't seem to get it to sit flush with the top on the intake manifold. It sits about a quarter inch above it and I was just wondering if I need a new bottom gear for it or a new dist all together. I have the non HEI dist from a LB9...Any help would be greatly appreciated.
Brandon

 

It's not sitting down onto the oil pump drive shaft properly. Get that lined up, and it will work fine.

 

Thanks, right after I posted this I thought about the pump shaft and bingo went right in after a couple turns