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Thread: Boosting a 427 LS2?
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02-22-2008, 09:02 AM #1
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- Aug 2005
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- Virginia Beach, VA
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Silver- '02 WS6 Procharged 9psi
Boosting a 427 LS2?
Will it be safe to run a 4.125 bore in a LS2 sleeved block with forced induction, 10-15psi. It will also include a 4” crank making a 427. Its either this or keeping the 4” bore with 4” crank 402, 10-15psi. But I really want to do the 427. Aiming for 700-800rwhp.
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02-22-2008, 05:14 PM #2
Well, it can be boosted as long as the compression is good, but any time you start messing with the bores and going bigger something has to give eventually. To get the sleeves in there you have to have more material taken out of the block. Go with a 402, you can get the HP you want with that. What you really have to ask yourself is how long do you want the motor to last? Stretch the motor to a 427 and throw boost on it and it wont last 100K miles. Well, for that matter you can't expect a 402 to do the same.
Last edited by cailey37; 02-23-2008 at 03:43 AM.
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