#1  
Old 07-22-2025, 03:26 PM
Mikael Nielsen Mikael Nielsen is offline
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Damn. As I feared.. I will get in touch with the machine shop.

Strange thing is, when I tried to loosen one of the main bearings, it was almost completely loose.
But thank you for the long explanation.

  #2  
Old 07-22-2025, 03:45 PM
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johnta1 johnta1 is offline
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Pontiac 400 specs are different than what you input.


Here a screenshot of what I would use. (don't know what you actually have)





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