I am having a problem. I have a 67 olds cutlass 330 engine with 65 olds 330 #2 heads. The push rods are rubbing on the bottom of the heads. I am basically looking for an answer on why would the push rods be rubbing on the bottom of the heads. If anyone out there is familiar with this engine, i would greatly appreciate any help i can get on this. I am researching cam bank angles and etc to try and figure out this issues, could this be a cam bank angle issue? The CID # on the block is 394417-3 and the #2 head numbers are 385101

 

By 67 you should have #4 heads. The early 330's were a 39° lifter bank angle where the later ones were 45° lifter bank angle. The angle is why the pushrods are rubbing on the heads. The holes in the #2 heads are not cast in the proper spot to allow enough clearance for the pushrods. The heads can be hogged out for the extra clearance required.