COMP Cams Dual Valve Spring - 1.550 in OD (Set of 16) 23-TR1-N-S Enough power to crank the

Enough power to crank the biggest performance engines

1987-1989 GMC R3500

CNC-machined 6061-T6 aluminum housing has a sealed upper support bearing and an extra-long lower bronze bushing for smooth operation and accurate timing at higher RPMs

Roush Performance's Resonator Delete H-Pipe is an affordable way to eliminate the factory resonator to get deep

COMP Cams Dual Valve Spring - 1.550 in OD (Set of 16) 23-TR1-N-S Enough power to crank theProduct Description: Valve Spring Dual Spring 551 lb in Spring Rate 1. 150 in Coil Bind 1. 550 in OD Set of 16 For 30 years, the COMP Cams philosophy has never changed: make the highest performing products possible and lead the industry in technological development. One thing COMP Cams has never forgotten: Performance is defined by what happens out on the race track. Because no matter what happens on a dyno or in a computer model, if that theoretical