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#1
01-02-2019, 10:44 PM
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Proper size of main bearing caps and block
Forgive me for improper nomenclature here, but I have an Internet friend who needs to know the proper diameter of the bore through the main bearing caps and block for a '55 287 (actually '55 288 GMC V8). He is having his rebuilt and the main bearing inserts do not seem to settle into place firmly.
And for my continuing education …. When a block and caps are "line bored" how does one make up for the material that was cut out? I've never heard of bearing inserts that are larger outside diameter than stock.
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My Pontiac is a '57 GMC with its original 347" Pontiac V8 and dual-range Hydra-Matic. |
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