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Old 09-27-2017   #6
RussMcB
 
Join Date: Jan 2015
Location: Marietta, GA USA
Posts: 1,148
Default Re: Drill a hole in your engine block???

Quote:
Originally Posted by Flyman 27 View Post
I guess my main point here is that back in '92, GM said that the single 5/16" drain is insufficient for the job. They recommended cleaning out the 5/16" drain AND adding the 3/8" drain hole to help the drainage problem.
Iv'e read a lot about the starter problems here but have not read about adding the drainage hole, even tho it was recommended to Dealers by GM way back in '92.
Just sayin, if you have to do the job, maybe you should follow GM's recommendations on how to fix the known problem.

Dan
It sounds like a worthwhile mod, to do while you're in there, even if the original hole is clear. Thanks for sharing (of course, I'll never remember this until right after the next time I put the plenum back on).
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