Quote:
Originally Posted by cppursell
I'm off to buy the thick 34510 gasket now! I'm confident that's the problem!
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Definitely the right choice and what I had to do with mine when changing pans.
The oil pan changed somewhere in the mid 70's I believe, and all aftermarket and repro pans are modeled after that later, wider ended pan.
The difference is slight ... probably be no more than 1/8" - but enough to cause dramas.
Here's the original on my '67 small block:
And here's the aftermarket:
