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Upgrade your LS or LT engine with high-performance engine parts designed to enhance power, reliability, and efficiency. Our extensive selection includes everything from cylinder heads and camshafts to throttle bodies, oil pans, and complete accessory drives, ensuring you have all the components needed for a successful engine swap or rebuild. Whether you're building a classic LS engine or modernizing with an LT swap, our products are engineered to provide the perfect fit and optimal performance.
Explore our key sub-categories for LS and LT engine parts:
Gaskets & Seals: Ensure a leak-free build with reliable gaskets and seals for your LS or LT engine.
While many parts are specific to either LS or LT engines, certain components like exhaust systems or sensors may be compatible. Always check compatibility before purchasing.
Yes, our camshaft and cylinder head packages are designed to boost horsepower, torque, and overall engine efficiency.
Absolutely. Many of our components, including camshafts, intake manifolds, and rotating assemblies, are engineered for high-performance and racing applications.
Many of our parts are compatible with both Gen III and Gen IV LS engines. Always refer to the specific product details to ensure compatibility.
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Looking for an Affordable, In Stock, Plug and Play wiring harness for your LS Swap? PSI sells Standalone Wiring Harnesses for GM Gen II, III, IV, & V LS/LT based engines and transmissions. These harnesses include the Gen II LT1/LT4, Gen III (24x) LS1/LS6 and Vortec Truck Engines as well as Gen IV (58x) LS2, LS3, LS7, & Vortec and GEN V LT / ECOTEC3 Engines. All PSI Harnesses are Made in the USA. In addition to wiring harnesses, PSI carries Holley Products, Vintage Air A/C, Dakota Digital Gauges, HPTuners and PCM programming, Fuel Pump Kits, Engine Sensors, Extension Harnesses, Replacement GM connector pigtails and a complete line of hardware to complete your conversion needs!
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Contacts
2029 Route 88
Brick, NJ 08724
ph. 732-276-8589 Mon-Fri: 8:00am to 6:00pm ET
customerservice@psiconversion.com
sales@psiconversion.com
techsupport@psiconversion.com