Originally Posted By madscientist
There are guys who put 4 bolt caps on Pcar blocks but it is a waste of time and WILL make the block weaker.

BTW with that stroke and those mains, I would have no less that .0036-.0038 main clearance. The block will flex and eat up the clearance.


Not only the mains, mine was flexing enough the cam bearings had grooves in them.