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Thanks for that Bondo I have the Mercruiser GM V-8 manual #24 already. Marine Power US advise me that I am using the wrong manual to measure cylinder block distortion and that I must use the Marine Power Manual.Ayuh,.... Welcome Aboard,.... Click on this link, 'n download the Mercruiser manual for their motor, of Yer motor's vintage,....
They're Both Chevy motors, 'n the internal tolerances will be the same, for each vintage,...