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Old 03-31-2012, 09:50 PM
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454 engine bore

how much can i safely bore a 85 chevy 454 block, and what displacement will it give me

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Old 03-31-2012, 10:24 PM
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I am not sure
but I do know you can go 60 very easy
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Old 03-31-2012, 10:30 PM
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Quote:
Originally Posted by rhino370
how much can i safely bore a 85 chevy 454 block, and what displacement will it give me
With or without cooling problems?
Max would be .120 but you MUST have the block sonic tested.
Bore it .090 to make it a 473ci with a stock crank.
Bore it .090 and stuff a 4.250 stroke crank in it and make a 503ci

Personally I would not go over .060 for any reason on a daily driver and anything over .060 needs the block tested. JMHO
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