Air & Fuel Delivery

Air and Fuel is vital to a thriving engine. No horsepower can be made with either air or fuel missing from the equation. Butler is your GM LS specialists when optimizing and tuning GM LS...More Details »

Apparel / Books

Get your Butler LS apparel and more. Show of your pride for the name you can trust in LS engines and performance. Need books and information? Butler stocks many manuals and books for LS and GM.

Camshafts / Valvetrain

Cylinder Heads & Services

The design of the cylinder head is key to the performance and efficiency, as the shape of the combustion chamber, inlet passages and ports determines a major portion of the volumetric efficiency...More Details »

Engine Components- External

We have the external engine components you need. From water pumps, valley covers, valve covers, and more, we have what you need at Butler LS. Some of these parts are not only cosmetic but...More Details »

Engine Components- Internal

Internal Engine Components turns a block into an engine. Internal engine components consist if bearings, crankshafts, oil pump components, rotating assemblies, rods, rings, pistons, main...More Details »

Engines/Kits/Blocks/Services

Butler Performance is known for world class engines in the Pontiac world and since has now applied that knowledge and understanding of proven race engines to the GM LS line of performance engines.

Exhaust / Headers

Exterior & Dress Up

Stock looking engines are everywhere. We have products to make your engine look sleek and custom. Dress it up with chrome or black valve covers, hoses, breathers, and more. Don't pop...More Details »

Fittings/Hoses/Block Plugs

Gaskets / Fasteners / Mounts

When performance engines is what we do, we have to ensure they are sealed, mounted, and fastened with the highest quality components made. This is often failure points in...More Details »

Ignition / Electrical

Ignition and electrical components are vital to an engine. Without spark and timing an engine can go from a performance engine to scrap metal. Butler LS only carries the top of the line...More Details »

Oil / Filters / Chemicals

Butler LS has built its reputation by providing quality parts in high performance engines. This is no different when it comers to engine oil, filters, and chemicals. We use what we sell....More Details »

Tools & Assembly Supplies

Butler LS wants you to be fully prepared to complete that kit or assembly. We help by offering supplies and tools used right here in our shop. These tools are from the manufacturers to...More Details »

Transmission / Drivetrain

A strong engine is only as good as the transmission that puts the power to the wheels. That's why Butler Performance trusts names like TCI, California Transmission, Centerforce, Lakewood, and more.

Valve Covers/ Coil Covers

Valve Covers for Pontiac GTO, Trans Am, and G8 with GM/LS Based Engines

Other GM Engines

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