cylinder bore

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cylinder bore

Post  o henry on December 11th 2017, 6:31 pm

heads i have have 70 stamped on them ford motorsports aluminum . right now have 440 bore...how big of bore will these heads accept ?

o henry

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Re: cylinder bore

Post  DanH on December 11th 2017, 9:44 pm

o henry wrote: heads i have have 70 stamped on them  ford motorsports  aluminum . right now have 440 bore...how big of bore will these heads accept ?
bore out to the max 4.899 inch. Your question is backwards. How small a bore would be correct.

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Re: cylinder bore

Post  DanH on December 15th 2017, 12:19 am

Answered your PM. How it works is the larger the bore the better the head works. The smaller the bore limits the very large valves used on some of the aftermarket heads

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