Originally Posted by stock49
Originally Posted by BobK
I understand the issue with babbitt bearings but have never seen them. Can you tell from this photo which cap type this is?

Casting number is your best bet for identification. There are four designs ('37 to '47 #838102), ('48 - '53), ('53 PG - '55 first series) and then the second series design:
[Linked Image]

Image is from the GM Parts Wiki.

The Search function is quite good. In this case on the Group "0.095" limited to the Oct of '62 Parts & Accessories Catalog (P&A 30).

Thanks but the engine is a 1959 261 from either a commercial truck or school bus. The part number on the cracked front end cap is 3837210 and I don't see it on the list.

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