Crower Valve Springs - 1.045 Spark Advance 5" GM style rear end

5" GM style rear end to disc brakes

Stock Pin Height

our advanced 1/8

Available in Black in sizes Small - 3X-Large (refer to sizing chart)

Crower Valve Springs - 1.045 Spark Advance 5" GM style rear endProduct Description: Valve Spring Single Spring 251 lb in Spring Rate 0. 860 in Coil Bind 1. 045 in OD Set of 16 Crower Cams and Equipment Company, Inc., is a leading producer of aftermarket camshafts and valve train components. But over the years Crower has developed a more diverse line of products. Today, Crower is the world's largest manufacturer of aftermarket crankshafts and connecting rods, and the Crower line of clutches has been dominating the