Does anyone know what impact all these extra horses will have on the stock transmission and/or read end.

The trans is a truck tranny it can handle it no issues, the differential is junk to begin with so who knows. I think Nubbs is racing a GXP with the stock differential and he is hitting a lot more HP and torque than we are. They use this same differential in one of the Cadillac's that has a lot more HP than we do so I think we are OK.

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Red Bull Drift Team 2008
Solo Mach and High Flow Cat
Dejon Intercooler, Intake Elbow, BOV spring
Wester's Garage RACE tune II
JPM custom shifter.
Barney Juice with Militec-1
GM Auto-dimming mirror with OnStar and maplights
Rhys Millen Racing, RMR Style Bar.
Peak RWHP 286.3, Peak Torque 313 ft/lbs.
SSR Type C wheels, Bridgestone Potenza RE-01's
DDM Works PINK Breastplate

NASSOA In Great Company! Founding Member

If you take all the "slack" out of the rear gears before you do any burnouts , or starts at the dragstrip , you'll be doing as much as you can to prolong the life of the rear gears. Me, I prefer rolling starts..........

Has anyone switched to a Cad CTS-V differential? Is that possible easily?

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07 GXP Sly Manual
Triumph Spitfire SCCA H Prod 2004-2007 National Champ

Not sure about how easy it is but that is what RMR runs in the Red Bull Drift Solstice, you can PM rmmshop he is on the RMR crew.

__________________
Red Bull Drift Team 2008
Solo Mach and High Flow Cat
Dejon Intercooler, Intake Elbow, BOV spring
Wester's Garage RACE tune II
JPM custom shifter.
Barney Juice with Militec-1
GM Auto-dimming mirror with OnStar and maplights
Rhys Millen Racing, RMR Style Bar.
Peak RWHP 286.3, Peak Torque 313 ft/lbs.
SSR Type C wheels, Bridgestone Potenza RE-01's
DDM Works PINK Breastplate

NASSOA In Great Company! Founding Member

No need for me since I am stock. Too bad the Westers tune would void my warranty.

Anyway, my guess is the V differential would be an easy swap. Something to consider for those into heavy mods or drag racing.

__________________
07 GXP Sly Manual
Triumph Spitfire SCCA H Prod 2004-2007 National Champ