BTR ULTIMATE RPM SPRING KIT
The Ultimate Spring kit for your Hydraulic roller LS. When you want the tach to be north of 8000 rpm on the gear change, This is the kit for you. Spintron tested and verified to be what is required for stability in Ultra high RPM hydraulic roller combinations. This is not a drop in kit. We recommend all 16 spring heights be checked and clearances Verified during installation.
685" Lift Dual Spring Kit for LS engines using Limited stock rocker arm setups and Roller Rockers. Includes dual springs, matching titanium retainers, locators for stock guides, locks, and seals. Spring specs are 195 lbs. at 1.710", 480 lbs. at 1.060", and coil bind at 1.000". This kit is compatible with all 15 degree LS heads including LS1 LS2 LS3 LS4 LS6 L76 L92 L99 LQ4 LQ9 L33 LSA, etc. This kit will not fit LS9 engines, please see item SK006 for LS9 heads.