Twin Turbo G8 GXP

CLN 6R

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Jun 25, 2007
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1,511
Location
St. Louis
I'm the only owner of the car, it was purchased in the Spring of 2009, brand new from Sapaugh Chevy, Pontiac, GMC in St. Louis.

The car has 34,791 miles on it. The cam setup has been installed for about 5,000 miles, and the TT setup, about 2,000 miles. I’ve always run Mobil 5w-30 in the car.

Here's a rundown of the mods….

Turbo Setup:
Twin Precision 6265, billet ball bearing turbos
Twin Tial MVS 38mm wastegates
50mm tial BOV
4" thick ETS intercooler
Scavenge Pump
All the fittings/lines/etc.
Custom fabbed intakes
Custom 3" stainless turbo-back exhaust
Skid-plate under the intakes

Motor:
3-bolt TexasSpeed Performance 231/236 .644/.613 112 LSA cam
PRC .650" Dual Valve Spring Kit
Comp Cams Trunion Upgrade Kit
Katech C5R Timing Chain
LS7 3-bolt Conversion Sprocket
Melling High Volume Oil Pump
New GM Crank Bolt
LS2 Timing Chain Dampener
Hand Ported Stock Throttle Body
160 degree Thermostat
RX Catch can w/ dual check valves & custom mounting bracket
HP Tuners tune by Shane

Fuel setup:
Injector Dynamics 850 Fuel Injectors
ZL1 Fuel Pump
Kenne Bell Boost-a-Pump

Interior:
Home Link Visor
JHP Triple Gauge Pod
Boost Gauge (currently not hooked up)
Aeroforce Interceptor Gauge
AEM Air/Fuel Gauge (currently not hooked up)
VIM hack with Apple cables
LED interior lights
JL Audio W6v2 10" Subwoofer with JL 500/1 Amp mounted in stealth box in spare tire well
Polk DB651 6.5" Speakers in all doors


Exterior:
DDM 5000k H.I.D.s
LED Rear Plate lights
Black Arrowhead Overlays
18% Tint all around
40% Windshield Tint
Shorty Antenna
Widened rear stock wheels to 9.5" by Weldcraft
295/30/19 Hankook Ventus V12 Evo tires on the rear
Stock wheels/tires up front
.75" Wheel adapters in rear
3mm Wheel spacers in front


Suspension:
BMR Rear Cradle/Differential Bushings
Spohn Toe Links
Spohn Trailing Arms


The car was dyno'd at a max of 12lbs, on pump 93 and made 710rwhp, and 742rwtq. The car was turned down to 10-10.5lbs, and is most likely making around 650-670rwhp/700rwtq on this tune setup.



6799142254_80bd5efdab_b.jpg


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Startup vid. Let's just say, the car is NOT quiet. Haha.

IMG_0114_zps7fa91563.mp4 Video by MUPhoto09 | Photobucket


Dyno Vid
https://www.youtube.com/watch?v=_8K21JMc2B8&feature=share&list=UUgHnbFBJnXSXilhlZQxRcbA


The car was also in GM High Tech Performance's January issue of Street Heat.
6D06AC2F-EECB-4E40-B07E-00E70CAA3FEB-443-00000038A1B4C7CF_zps3958878e.jpg




The front bumper has some minor chips in it, since I'm sure you've noticed, this paint sucks. The front part of the hood has a knick/chip in it from a rock that got kicked up from the highway on the way to the first G8 National meet. there's also a small knick in the windshield that I never got around to getting fixed. Besides that, the car is in damn good shape. The car is still running the stock clutch in it, and with me being very anal about changing the fluid (Ranger method, look it up if you're unfamiliar) and also not being super hard on the car, it's living, but it WILL need a new clutch at some point. The Boost gauge and the Air/Fuel gauge also aren't hooked up, I was planning on buying some nice SpeedHut Gauges to replace them, (Boost and Fuel Pressure), but never got a chance to. The current gauges could be hooked up and work fine though.


Basically this is one of the baddest GXP's out there. If you want power, beauty, fun, attention, and to kill just about any car on the road, then this is the GXP for you.

If you have any questions about the car, or are curious what's included/not included, etc., please comment, ask, or PM me.


Price is $40,500.
 
Last edited:

CLN 6R

Well-Known Member
Established Member
Joined
Jun 25, 2007
Messages
1,511
Location
St. Louis
Nice car but 700+whp on stock internals and clutch?
The LS3 engines are strong.

And I pretty much baby the car, and with it having street tires, the car spins before there gets to be too much of a load on the clutch.
 

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