Howards Performance Dual Racing Valve Springs w/ Damper - 1.540" O.D. H760C31S Superflow Muffler

Superflow Muffler

1978-1987 Buick Regal 5

3000 / 7000 RPM

This is common on circle track 23 ° high-port

7 gpm at 90 psi

Howards Performance Dual Racing Valve Springs w/ Damper - 1.540" O.D. H760C31S Superflow MufflerEngineered for racing use, springs are precisely coiled and undergo precision heat treating. Sold in sets of 16. The name Howards Cams has been synonymous with high performance camshafts since the 1950s. Howards Cams have always used on track experience to design the most powerful designs. This includes early Top Fuel favorites driven by Jack Chrisman and Larry Dixon Sr. Today we have even a greater group of experienced racers in Circle Track, Drag