Howards Performance Hydraulic Roller Dual Valve Springs - 300 lb/in - 1.437 OD H75700356 5 in W x 19

5 in W x 19 in H x 3 in D

2002-2006 Hummer H1

1984-2002 Ford E-150 Econoline

Suitable for Brodix 12-23 Degree Head

The only difference is the material with the SRC-2308 being lighter

Howards Performance Hydraulic Roller Dual Valve Springs - 300 lb/in - 1.437 OD H75700356 5 in W x 19Product Description: Valve Spring Dual Spring Damper 300 lb in Spring Rate 1. 125 in Coil Bind 1. 437 in OD Set of 16 The name Howards Cams has been synonymous with high performance camshafts since the 1950s. Howards Cams have always used on track experience to design the most powerful designs. This includes early Top Fuel favorites driven by Jack Chrisman and Larry Dixon Sr. Today we have even a greater group of experienced racers in Circle Track,