PAC Racing 1200 Series Ovate Beehive Spring - 313 lb/in Spring Rate - 1.140 in Coil Bind - 1.290 in OD - GM LS-Series - Set of 16 PAC-1215 CS-OFF-12 At very high RPM's the

At very high RPM's the increased burn time can reduce misfires resulting in more peak horsepower and torque

650 in Spring Wire OD

Will fit cast iron or aluminum intakes

Here is an easy and fast way to make those Red Fag Wing Adjustments

Economical general-purpose fitting sealant

PAC Racing 1200 Series Ovate Beehive Spring - 313 lb/in Spring Rate - 1.140 in Coil Bind - 1.290 in OD - GM LS-Series - Set of 16 PAC-1215 CS-OFF-12 At very high RPM's theProduct Description: Valve Spring 1200 Series Ovate Beehive Spring 313 lb in Spring Rate 1. 140 in Coil Bind 1. 290 in OD GM LS Series 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