LSX Performance Parts

Excelsior Motorsports takes the guesswork out of producing big horsepower. Our dyno proven combinations are all your vehicle needs to develop the big power numbers you're looking for. We offer performance parts for all LS1, LS2, LS3, LS6, LS7, LS9, LSA and even the new LT-1 & LT-4 in the C7 Corvettes.

If you are looking for the best aluminum cylinder head with the highest flowing numbers, look no further. All Pro Heads work great with larger displacement LSX engines.

These CNC ported LS6 heads, which flow 313 cfm at .600 lift would be great upgrade to your corvette's engine. We have had gains as much as 40-50 rear wheel hp from these heads!

Cubic inches create torque and our stroker kits add more power producing volume to your engine. You can add a stroker kit to any of our systems to increase the potential of your engine.

Recent tests of our headers on a C6 Corvette netted us 30 horsepower and 25 lb/ft of torque! The new ZR1 Corvette and LSA equipped CTS-V produce even more, showing a monstrous gain of 55 horsepower and 50 lb/ft of torque!

Reliable nitrous systems with pneumatic operated technology. Our nitrous systems use pneumatic solenoids which have a zero failure rate. These solenoids can be manually operated or if activated electronically up to 4 stages. 150psi of C02 line pressure assures fast and reliable solenoid operation.

Superchargers deliver excellent horsepower and torque in a complete, smog legal kit that fits under the factory hood. Adding a supercharger to any of our performance packages will produce incredible rear wheel gains!

We offer several solutions to improve breathing, including ported manifolds and Fast LSX intake manifolds.

Camshafts determine the timing of valve events within the engine. Our camshaft combinations have been dyno tested to ensure they produce great peak and midrange power in your application.

The air flow potential of the throttle body is an important factor in the engine's ability to breath. Ported throttle bodys eliminate restrictions improving the flow of air into your engine. Additional modifications such as cylinder heads and camshaft will show additional gains from this modification. For larger engines, we offer custom throttle bodies in sizes up to102mm.