PAC Racing 1300 Series Valve Spring Dual Spring 513 lb/in Spring Rate 1.150" Coil Bind - 1.564" OD H762C04 From the one-piece sealed housing

From the one-piece sealed housing with a built-in clear sight window to the massive 1

Holley Hi-Ram Top Plenum

A/C override circuit included

NOTE: intended for street legal vehicle use only

Adjustable start retard

PAC Racing 1300 Series Valve Spring Dual Spring 513 lb/in Spring Rate 1.150" Coil Bind - 1.564" OD H762C04 From the one-piece sealed housingProduct Description: Valve Spring 1300 Series Dual Spring 513 lb in Spring Rate 1. 150 in Coil Bind 1. 564 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