Product Description
- 60lb Valve springs required
- Your truck should make at least 500 horsepower for these to work properly
- Modified fuel supply is recommended
- Some pumps (usually 160s and 180s) will idle erratically after the install of these springs
- NOTE: 160hp and 175hp pumps require shim kit (DDP part# DDP624). Additional cost is $6.00
- 5000Rpm Governor Springs Require 60 Valve Spring Pacbrake #C14010)
- Your truck should make at least 500 horsepower for these to work properly
- Modified fuel supply is recommended
- Some pumps (usually 160s and 180s) will idle erratically after the install of these springs
- NOTE: 160hp and 175hp pumps require shim kit (DDP part# DDP624). Additional cost is $6.00
- 5000Rpm Governor Springs Require 60 Valve Spring Pacbrake #C14010)