98-18 Cummins 24v Hamilton 103# Valve Spring Kit RPI see our other items for

see our other items for the billet stubby version for 1999-2003 7

and come with all stainless steel fasteners

Return label included to ship back core for free

Powder Coat options for a clean look under the hood

98-18 Cummins 24v Hamilton 103# Valve Spring Kit RPI see our other items forDescription Stock 24v springs have 78 82lbs of seat pressure at 1. 380. If you are over 35psi(boost or drive pressure), stock springs do not fully control the valvetrain. Intake and exhaust valves can be blown open by boost and exhaust drive pressure which allows reversion. Reversion can hurt your power potential by allowing exhaust gasses to enter the cylinder on the intake stroke. Inert gasses in the exhaust, when re introduced into the cylinder