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Old 07-02-2009, 09:36 PM   #15
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Old 07-03-2009, 05:17 PM   #16
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[QUOTE=383ss;639276]no offense, but those seem weak for a 427. I would have expected 550rwhp+, but I don't know any details on the motor either.

383ss -The 427 LS-7 factory engine installed in the ZO-6 is 505 flywheel HP and does close to 425 rwhp on the dyno. So you think 100+ rwhp increase at 528rwhp is weak?? That is over 620HP at flywheel or another 115HP. Not that 550+ cannot be done but I think you have very high expectations. Plus the LS-7 is already a very high performance engine so taking it even higher is a challenge. Just my 2 cents.
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Old 07-05-2009, 01:34 PM   #17
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[QUOTE=Sack Rat 2SS;646343]
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Originally Posted by 383ss View Post
no offense, but those seem weak for a 427. I would have expected 550rwhp+, but I don't know any details on the motor either.

383ss -The 427 LS-7 factory engine installed in the ZO-6 is 505 flywheel HP and does close to 425 rwhp on the dyno. So you think 100+ rwhp increase at 528rwhp is weak?? That is over 620HP at flywheel or another 115HP. Not that 550+ cannot be done but I think you have very high expectations. Plus the LS-7 is already a very high performance engine so taking it even higher is a challenge. Just my 2 cents.

You can say that again...

The LS-7 is no joke in stock form,Neither is the LS-3.
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Old 08-12-2009, 04:28 PM   #18
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Old 08-12-2009, 05:20 PM   #19
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Old 08-12-2009, 05:29 PM   #20
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Is it just me or do these numbers seem low for a built LS7 ? Livernois Motorsports has numbers near 600 with similar mods on C6 LS7 Z06's with similar mods
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Old 08-12-2009, 08:08 PM   #21
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Is it just me or do these numbers seem low for a built LS7 ? Livernois Motorsports has numbers near 600 with similar mods on C6 LS7 Z06's with similar mods

Yeah it is low.....Still trying to figure out why?

Maybe the LS3 HEADS/STOCK LS3 Intake we have just ain't as good as those LS7 heads/FAST 102MM Intake. I went cheap on heads I admit.....But My low end torque kicks the sh$%% out of LS7 all day long.

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