Thread: Today I cracked the rear main bearing end cap on my '66 389
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Old 05-06-2026, 03:00 AM
hurryinhoosier62 hurryinhoosier62 is offline
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Originally Posted by NeighborsComplaint View Post
Since all pontiac blocks of that era were factory align-honed, wouldn’t the caps always be concentric to the crankshaft centerline and centered (within OEM tolerances) on the main cap/block saddle parting line?
Cite your CREDIBLE sourcing that PMD align honed all the V-8 they used. Of all the virgin Pontiac blocks I have torn down I have never seen one with crosshatch on the main saddle.

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