How many GXPs over 600 rwhp? - Page 2 - Pontiac G8 Forum: G8 Forums - G8Board.com
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post #21 of 42 (permalink) Old 12-10-2012, 03:31 PM
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I'll be over 600 rwhp in late January. I was at 500 rwhp last time I dyno'd and I've dropped a couple of pulleys sizes since then. I am waiting until I can put in a higher capacity fuel pump and then I am going to flip my cogs on the back of the maggie to overdriven and see what she puts down. I just had Daniel's rebuilt Century transmission and gforce axles installed, so all that's left is the fuel pump.

I'm not really worried about modding a possible "collector's item". I can always put it back stock

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post #22 of 42 (permalink) Old 12-10-2012, 03:32 PM
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Oh, BTW, I do know for a fact there is one other Texas GXP on this board pushing well over 600 rwhp. I don't know if he wants to be named though.

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post #23 of 42 (permalink) Old 12-10-2012, 03:38 PM
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There is also another TVS2300 M6 GXP in the Tampa area pushing 603 whp.

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post #24 of 42 (permalink) Old 12-10-2012, 08:07 PM
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Oh, BTW, I do know for a fact there is one other Texas GXP on this board pushing well over 600 rwhp. I don't know if he wants to be named though.
I love secrets.

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post #25 of 42 (permalink) Old 12-10-2012, 09:34 PM
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lol
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post #26 of 42 (permalink) Old 12-11-2012, 07:24 AM Thread Starter
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To all the guys running turbos or superchargers, is everyone on a stock bottom end? Any head work? Interested in cam specs if they aren't proprietary. Thanks!
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post #27 of 42 (permalink) Old 12-11-2012, 08:35 AM
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To all the guys running turbos or superchargers, is everyone on a stock bottom end? Any head work? Interested in cam specs if they aren't proprietary. Thanks!
Yes stock bottom end.

No head work.

TSP 231/236 .641/.613 112 LSA

Didn't have turbos in mind when I bought the cam, so it's not exactly a "blower cam" but it seems to be ok. If I would have planned on doing a power adder, I would have gotten something different.

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post #28 of 42 (permalink) Old 12-12-2012, 02:59 AM
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I saw your thread where you were parting out. Pardon my ignorance, but why go through the time and expense of building a custom TT only to go through the time and aggravation of going back to stock? Selling the car I presume?
I had my fun with it. Ready for something different. Decided to sell before I blew it to bits!
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post #29 of 42 (permalink) Old 12-12-2012, 10:13 PM Thread Starter
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Originally Posted by Crazy_8 View Post
I'll be over 600 rwhp in late January. I was at 500 rwhp last time I dyno'd and I've dropped a couple of pulleys sizes since then. I am waiting until I can put in a higher capacity fuel pump and then I am going to flip my cogs on the back of the maggie to overdriven and see what she puts down. I just had Daniel's rebuilt Century transmission and gforce axles installed, so all that's left is the fuel pump.

I'm not really worried about modding a possible "collector's item". I can always put it back stock
Beep beep beep
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post #30 of 42 (permalink) Old 12-13-2012, 06:35 PM
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Forged LS3, 227-227 on a 116+0 cam.

Stock block and heads get questionable at 700+ rwhp

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post #31 of 42 (permalink) Old 12-13-2012, 08:55 PM
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Forged LS3, 227-227 on a 116+0 cam.

Stock block and heads get questionable at 700+ rwhp
Your car is badass, but this thread is about about GXPs pushing 600+.

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post #32 of 42 (permalink) Old 12-17-2012, 10:09 PM Thread Starter
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So, mostly a bunch of Mr. Flanders, huh?
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post #33 of 42 (permalink) Old 12-18-2012, 12:32 AM
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Seriously?

I don't get "dyno tunes."

My car gets tuned on the street....
You get traction on the street with 600+whp? Thats pretty impressive!

Just another 9 second family car...

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post #34 of 42 (permalink) Old 12-18-2012, 07:40 AM
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You get traction on the street with 600+whp? Thats pretty impressive!
In 3rd and 4th.... Yup.

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post #35 of 42 (permalink) Old 12-18-2012, 03:43 PM
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In 3rd and 4th.... Yup.
Interesting... drag radials I assume to get proper load on the engine? When I was under 600 it would still destroy street tires, over 600 was silly and made it hard to log anywhere but the track. You ever take yours down the track? Be nice to see a turbo car finally make a pass.

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post #36 of 42 (permalink) Old 12-18-2012, 04:29 PM
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Interesting... drag radials I assume to get proper load on the engine? When I was under 600 it would still destroy street tires, over 600 was silly and made it hard to log anywhere but the track. You ever take yours down the track? Be nice to see a turbo car finally make a pass.
Weird when my car made enough power to go 134 in the 1/4 with the slicks 2nd gear got traction most the time. When tuning/logging ty' car it fights for traction anything below 60 (10psi) on the 295 street tires but is manageable.

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post #37 of 42 (permalink) Old 12-18-2012, 04:54 PM
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Weird when my car made enough power to go 134 in the 1/4 with the slicks 2nd gear got traction most the time. When tuning/logging ty' car it fights for traction anything below 60 (10psi) on the 295 street tires but is manageable.
Not sure which gears you had? I had 3.70's like the M6 GXP's which doesnt help traction any. I could see it being much better with 2.92, 3.27's, etc.

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post #38 of 42 (permalink) Old 12-18-2012, 08:39 PM Thread Starter
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So all the fast G8s are gray GTs? Well, at least I have the right color.
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post #39 of 42 (permalink) Old 12-18-2012, 09:39 PM
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Interesting... drag radials I assume to get proper load on the engine? When I was under 600 it would still destroy street tires, over 600 was silly and made it hard to log anywhere but the track. You ever take yours down the track? Be nice to see a turbo car finally make a pass.
I have 295 Hankook street tires. It's pretty manageable @ 8.5lbs where it's at now in 3rd and 4th, I haven't driven it on 10lbs yet though.

I hope to take it down the track next season.

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post #40 of 42 (permalink) Old 12-19-2012, 01:30 AM
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I have 295 Hankook street tires. It's pretty manageable @ 8.5lbs where it's at now in 3rd and 4th, I haven't driven it on 10lbs yet though.

I hope to take it down the track next season.
Ahh come on... 8.5lbs is baby bottle boost! haha

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