As there has recently been a epidemic in fresh builds being trashed by contamination I should also suggest clean it, then clean it again, and again, and again until no specks of crud reside in any oil passage. Here's some more info recently posted by Tim Lederman which has the best porting info I've ever seen for these engines:

http://www.midstateantiquestockcarclub.com/stovebolts.html


1952 1300 Canadian 1/2 ton restomod
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