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Old 03-25-2008, 11:16 AM
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im 19 and going for broke

i have 2 projects going they are both custom. the first one is my olds 425 going in a 92 c1500 (my daily driver). my next is a pulling truck its an 87 k20 with a 454 (not built yet). i want to destroke that to a 427.
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Old 03-25-2008, 11:26 AM
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Welcome to Hotrodders.
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Old 03-25-2008, 11:31 AM
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Welcome. Why would you want to make a 454 into a 427?
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Old 03-25-2008, 02:19 PM
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Welcome!
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Old 03-25-2008, 02:27 PM
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Quote:
Originally Posted by speedydeedy
Welcome. Why would you want to make a 454 into a 427?
i want to beable to pull some high rpms
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Old 03-25-2008, 02:29 PM
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thanks all you guys
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Old 03-25-2008, 08:47 PM
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Welcome to Hotrodders 454s will rev hard too when built right.

Shane
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Old 03-26-2008, 02:28 PM
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Welcome I say build it bigger instead. 496 sounds so much better
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Old 03-26-2008, 04:30 PM
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Welcome I say build it bigger instead. 496 sounds so much better
i want to spin high rpm but it does sound better
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Old 03-26-2008, 05:49 PM
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What are you planing on putting it in and how high do you plan to spin it?

Shane
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Old 03-26-2008, 08:20 PM
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Quote:
Originally Posted by k20nutz
i want to spin high rpm but it does sound better
Shorter strokes shouldn't be the only consideration for building a high(er) rpm engine. For most people, valvetrain upgrades and increased airflow capacity will yeild higher overall rpm capability.

A couple examples:
The 427 inch LS7 has a 4.00" stroke and has a redline of 7100 rpm
the Ford GT 5.4L has a 4.165" stroke and has a redline of 6500 rpm

Both of these engines have relatively long strokes compared to their overall displacement.

As another example, a buddy of mine races a 65 Nova with a 468" BBC. It runs 9.60s in the 1/4 and crosses the line at 7100 rpm.

Just something to think about.
Good Luck

Last edited by Blazin72; 03-26-2008 at 08:30 PM.
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