Re: Olds Oil Pump (again)

Posted by PackardV8 On 2007/7/26 7:06:58

Olds pump Dowl:
True, there is no dowel nor centering provisions with the adapter kit. HOWEVER, there are variations in V8 rear main caps as well as at least TWO different oil pans, possibly 3 different pans. I have two such variations of rear main caps in my possession and this was discovered some 6 years ago and posted at various Packard forums with pics at that time.

NOT good to dowel the pump to the adapter plate alone. The PLATE itself would need to have a centering dowel that indexes to the hole in the rear main cap and THEN dowel the pump to the plate.

But with internal factory variations of main cap and MAYBE pan variations the doweling would not be practicle nor necessarily accurate for every engine.
I recently made an alignment shaft utilizing a stripped distributor body to use for alignment.

As long as the adapter plate is sufficiently hand fitted for centering and the bolts sufficiently tightened then nothing should shift around any.