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Pontiac GTO & G8 GXP Performance Packages

Excelsior Motorsports takes the guesswork out of producing big horsepower. Our dyno proven combinations are all your G8, G8 GXP or GTO needs to develop the big power numbers you're looking for.

g8 gxp gto LSX performance package stage 1

K&N Cold Air System, Ported Throttle Body, Cooler Thermostat, Taylor Wires, NGK Plugs, Baseline Dyno and Custom Dyno Tune.

g8 gxp gto LSX performance package stage 2

American Racing Long Tube Headers, High Flow Cats, X Pipe, K&N Cold Air System, Ported Throttle Body, Cooler Thermostat, Taylor Wires, NGK Plugs, Baseline Dyno and Custom Dyno Tune.

g8 gxp gto LSX performance package stage 3

LS1/LS2 - Fast Intake Manifold, LS3 - Ported Stock Manifold, American Racing Long Tube Headers, High Flow Cats, X Pipe, K&N Cold Air System, Ported Throttle Body, Cooler Thermostat, Taylor Wires, NGK Plugs, Baseline Dyno and Custom Dyno Tune.

g8 gxp gto LSX performance package stage 4

CNC Ported Heads, Custom Ground Cam, Roller Rocker Upgrade, ARP Head Studs, MLS Gaskets, LS1/LS2 - Fast Intake Manifold, LS3 - Ported Stock Manifold, American Racing Long Tube Headers, High Flow Cats, X Pipe, K&N Cold Air System, Ported Throttle Body, Cooler Thermostat, Taylor Wires, NGK Plugs, Baseline Dyno and Custom Dyno Tune.

g8 gxp gto LSX performance package stage 5

All Pro Heads, Custom Ground Cam, Roller Rocker Upgrade, ARP Head Studs, MLS Gaskets, Ported Stock Manifold, American Racing Long Tube Headers, High Flow Cats, X Pipe, K&N Cold Air System, Ported Throttle Body, Cooler Thermostat, Taylor Wires, NGK Plugs, Baseline Dyno and Custom Dyno Tune.

Call for a performance evaluation appointment today.