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1958 365 C I engine Q

Started by Jerry Michaels #21204, February 24, 2005, 08:35:36 PM

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Jerry Michaels #21204

February 24, 2005, 08:35:36 PM

I am going to rebuild the 365 ci in my 58 Eldorado, My question is has anyone ever punched a 365 ci out to a 390 ci? Are the cylinder walls thick enough?? I know about sonar but just wondered if anyone has done it here. Thanks

Paul Flykt #18899

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February 25, 2005, 04:14:58 PM
I dont think that is possible. You would have bore it 0.130 over to get close to 390. In 59 Cadillac increased the stroke from 3 5/8 to 3 7/8 to get to 390 leaving the bore at 4.0. When I rebuilt my 57 my machinist was a little concerned about going to 0.060 to clean up the cylinders on my block.
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