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Thread: Horsepower
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03-12-2007, 05:22 PM #1
Horsepower
How much horsepower does a 2001 Trans Am WS6 have?
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03-12-2007, 05:35 PM #2
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09 EclipseGT 75 Chevy 4x4- 2001 Trans-Am 13 F-XT
305 +-10 to rear wheels.
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03-12-2007, 06:50 PM #3
i believe it is 325 at the flywheel and most people agree they were underated
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03-12-2007, 07:08 PM #4
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03-12-2007, 07:18 PM #5
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Pewter- 1999 Trans Am 5.7L
The WS6's were rated to have 340 at the fly. They had 320 if it were a firebird formula.
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03-12-2007, 07:21 PM #6
yeah general number: ws6 305rwhp, non ws6 290-295rwhp. but it varies from the factory tune, some run rich some run lean making more power.
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03-12-2007, 07:24 PM #7
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Pewter- 1999 Trans Am 5.7L
The formula's from 98-99 came with 305, the WS6's 320. But a good starting number would be about 270-280RWHP.
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03-12-2007, 07:41 PM #8
they are all underrated my friend... ls1 engine are 350-365hp at crank.
the difference in stock LS1 vette vs fbody and maros is that vette use a different A/F table than fbody and maros LS1s but still the same engine. I dynoed my 99 TA stock (I mean stock with paper filter) at 290-292rwhp.
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03-12-2007, 07:43 PM #9
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03-12-2007, 08:30 PM #10
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Pewter- 1999 Trans Am 5.7L
I have 386RWHP. It was running a little lean too. I should have a little bit more now. Maybe 395RWHP. But dont have a dyno to show it. Here is my latest dyno.
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03-12-2007, 08:34 PM #11
cool man good numbers , hey be careful if it's 14.5-15 A/F ratio you'll mess up/fry ya engine being lean. I tuned my down to 13.5 where it needs to be lost 6-8rwhp but not running lean any more.
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03-12-2007, 08:35 PM #12
the trick is not to be lean nor rich, I hear 13.5 A/F is optimal for engine life span and perfomance longevity while not being under-tuned.
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03-12-2007, 08:55 PM #13
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Pewter- 1999 Trans Am 5.7L
Mine peaked out at 14.46ish. I am getting it retuned. So as soon as I get it fixed I will redyno, and we will see where I am at.
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03-12-2007, 09:02 PM #14
yeah you'll loose a few rwhp but it's better safe than sorry
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03-12-2007, 09:38 PM #15
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Pewter- 1999 Trans Am 5.7L
Yeah...definately. But a few RWHP...you really wont be able to tell when you are that high.
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03-12-2007, 09:40 PM #16
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09 EclipseGT 75 Chevy 4x4- 2001 Trans-Am 13 F-XT
a couple of stickers will bring that lost power back!
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03-12-2007, 09:43 PM #17
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Pewter- 1999 Trans Am 5.7L
Yup...I still have to put on the "sticker" (aniversary decal) on the passenger side. I am going to try and put a bandit style bird on a WS6 hood. Dont know how it will turn out.
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03-12-2007, 09:46 PM #18
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09 EclipseGT 75 Chevy 4x4- 2001 Trans-Am 13 F-XT
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03-13-2007, 05:37 AM #19
probably that hood is heavier than stock?
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03-13-2007, 08:23 AM #20
hahaha yeah stickers = hp!! don't forget those coffee cans too!
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