PAC Racing 1200 Series Valve Spring Dual Spring 540 lb/in Spring Rate 1.100" Coil Bind - 1.244" OD 10290 5-6 pulse ignition signals (1-12

5-6 pulse ignition signals (1-12 cyl engines)

2022 Chevrolet Silverado 1500 LTD LT

1979-1997 GMC C2500 Suburban

whilde the "R" series springs are 11" tall x 5-1/2" O

ORB-08 outlet and return port

PAC Racing 1200 Series Valve Spring Dual Spring 540 lb/in Spring Rate 1.100" Coil Bind - 1.244" OD 10290 5-6 pulse ignition signals (1-12Product Description: Valve Spring 1200 Series Dual Spring 540 lb in Spring Rate 1. 100 in Coil Bind 1. 244 in OD Set of 16 PAC Racing Springs is part of the Race Winning Brands Family. With more than 100 years of spring manufacturing experience. We understand the demands of racing and provide a commitment to all of our customers to provide the best service possible. We continue to expand products and offer expanded onsite technical services at various