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Bore 249 to 268

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Hi , I have this -49 Pontiac 249 witch I need to bore more than 0,060 . Can I bore it up to 3-3/8 like the 268 are ?



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you won't be able to bore oversize 0.125 needed to reach the 268's standard bore of 3.375. you would have to install 8 new cylinder sleeves to have 3.375 bore. i seriously doubt that sonic testing your 249's cylinder walls will show enough thickness to handle a 0.125 increase in the bore.


charles l. coker

1953 pontiac tech advisor

tech advisor coordinator



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