Weld On Bung & Plug Kit (Thread-In Bosch Style) If you are installing an oxygen sensor in a system that didn't originally come with one, or if you are installing a stand-alone Wideband AFR gauge, you will need this kit. It comes with the bung (18mm...

Weld-On Oxygen Sensor Flange (2-Bolt Flange Style) This flange is made from 3/8" mild steel, then tapped for M8 x 1.25 studs weld on. For the 2 bolt style O2 sensor. NOT for thread-in O2 sensors. Contact our Tech Support Line for further...

Propane Injection Kit Our kits are designed to bolt onto the carbureted 22R and 20R motors and to use your existing carburetor throttle plates. These are excellent conversions, very simple and clean. Installation time should take 2 to 5 hours,...

Main Bearing Set Clevite 77 engine bearings have set the pace for engineering quality. Clevite 77 engine bearings are built above industry standards for strength and durability, even exceeding the highest standards set by heavy-duty engine...

Pro Piston Set (Custom Build) Forged pistons provide the ultimate strength and durability for any engine! Many people think that forged pistons are just for racers; this is not true. Even a daily driven vehicle can benefit from the extra strength of a...

OE Style Oil Filter This is a factory replacement oil filter. Contact our Tech Support Line for further information at 928-575-2174. Note: Images are for illustration purposes only. Images may not represent the product listed. Please...

Street Performer Retainer Set (Single Spring) Our Street Performer retainers are an excellent OEM replacement that matches our street performer valve springs perfectly. If you have a mild street motor that doesn't need anything exotic in the...

Manifold Adapter Gasket (Holley Adapter To 20R) Gaskets seal and mate surfaces between various components to keep oil, coolant, air, and fuel in their respective places. Over time gaskets become brittle and break. Replace a leaky or corroded gasket...

Teflon Base Gasket Teflon heat isolators keep the power-robbing heat away from the intake air. This is the ultimate for improving mileage and performance for the price. Contact our Tech Support Line for further information at 928-575-2174...

Sidedraft Manifold w/ Linkage (48mm & Larger Carbs) If you are running 48mm or larger sidedrafts then this is the manifold you need. The two-piece design allows the carburetors to be spread apart from each other so you don't get any linkage...

Labor for Drilling & Tapping For Nitrous (22R Sidedraft Manifold) LC Engineering offers a variety of services for all of our valued customers. Each department specializing in its own product line. Whether it's our full CNC machining department, our...

Holley 350 / 500 to 20R Manifold Adapter Kit We manufacture these billet aluminum carb adapters in house, to our specs, and only use the finest materials in our adapters to assure the quality you would expect from LC Engineering. These are CNC machined...