Holley Power Valve (3.5″) These power valves are an important component in the power enrichment circuit of Holley's performance carburetors. They operate by using engine vacuum to control their opening and closing rate. When they open, additional fuel...

Holley Power Valve (2.5″) These power valves are an important component in the power enrichment circuit of Holley's performance carburetors. They operate by using engine vacuum to control their opening and closing rate. When they open, additional fuel...

Throttle Linkage (Nut & Tab Washer) Have you lost your linkage bracket nut? No stress LC Engineering has you covered. We offer this kit to make your life a little easier. It will include one M8 x 1.0 nut as well as one Tab Washer to keep it from...

Throttle Shaft Nut Have you lost your linkage shaft nut? No stress LC Engineering has you covered. We offer this to make your life a little easier. Don’t wait until it is too late, grab one today. Contact our Tech Support Line for further...