The '04 GTO is supposed to be the high water mark for LS1s.? It has the LS6 intake?which helps when adding headers, cam, etc.? 305 is also a common stock RWHP number for 04 GTOs but simple I/E bolt-ons and a tune get it to?350 rwhp.?? There are many 450 rwhp 04 GTO's running around with not much more than a cam, TB?and 5.3L modified heads. ?About the only nice thing about getting a real LS6 for a swap is the valve springs are already there for an additional 500 rpm but I don't think that is worth $4000 extra.
-----Original Message----- From: [EMAIL PROTECTED] To: [EMAIL PROTECTED] Cc: [EMAIL PROTECTED]; [email protected] Sent: Wed, 2 Apr 2008 10:05 am Subject: RE: My LS1 Miata drives! The rated HP from GM is more marketing than dyno reality. The LS1 was underrated. About 305 rwhp is normal in the F-body. The C5 Z06 is around 355 rwhp so the real difference is like 50 hp not the 80 that the ratings would have you believe. Add a mild to medium cam, headers and free flowing inlet and exhaust and the LS1>LS6. Steve
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