Description

BTR Ultimate RPM Spring kit
Sk702- .685″ max lift
BTR designed this valve spring kit for use in higher rpm combos ,especially for use with added cylinder pressures found in boosted applications. This kit was designed to help keep your valve train stable in the higher rpm ranges found in today’s technically advanced valvetrain systems. Paired with light weight valvetrain components and the proper cam lobe design, we’ve run these past 9000 rpm in certain race applications. Spintron tested and run in some of the fastest hydraulic roller LS engines on the planet ,this kit has proven itself over and over again.

Part Type  Valve Spring Kit: Powder Metal Guide, with Titanium Retainers

Spring specs are as follows:

•170 lbs @ 1.800″

•380 lbs @ 1.180″

•450 lbs @ 1.115

•Coil bind @ 1.000″

Includes: Valve Seals and Valve Stem Locks