Quote:
Originally Posted by mrmustang
As for 427 engines, Ford created "center oiler" (non cross bolted) and side oiler (cross bolted) 427 engines. Beware that plenty of people have mistaken 390 engines with 427 heads installed as 427 engines in the past. Check all casting codes, check all date codes at the very least.
Bill S.
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All 427s have the center three main caps crossbolted. Not a difference there between a side oiler and a center oiler.