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Old 11-04-2002, 02:11 PM
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Question Chevy 454 to 489 Question

Ok, I have a #361959 454 BBC that is Bored .030" with a 4.000 Stroke Crank (I guess making it a 460). If I put in a 4.250 Stroke Crank will this take me to a 489? Any Input would be Appreciated!

[ November 04, 2002: Message edited by: Project 64 ]</p>

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Old 11-05-2002, 03:01 PM
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Old 11-05-2002, 03:56 PM
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Yes sir,
that makes a 489.4 cu.in. BBC.
Just do some research so that you can get the correct compression hieght on your piston, which will obviously be .25 shorter than stock, and make sure that you check to see if the block needs to be releaved to account for the extra cubic inches by way of the longer throws.

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Old 11-05-2002, 03:58 PM
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Thanks for the info. Jay
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