Brian Tooley Racing valve spring kits in ALL of our GPI Camshaft Packages for one reason: QUALITY! We haven’t seen a single failure out of a BTR valvespring since their conception in 2005!
This spring kit contains PAC 1207X Dual Valve Springs, matching titanium retainers, your choice of locators for stock or bronze guides, locks, and seals.
Spring Specs are 155 lbs @ 1.800, 436 lbs @ 1.150, Coil Bind 1.000″, Max lift .700″. This is a drop in spring kit for the following engines: LS1, LS2, LS3, LS4, LS6, L76, L92, L99, LQ4, LQ9, L33, and LSA. This kit will not fit LS9 engines.
This kit WILL fit LS7 Engines with the proper amount of shim, which you can include as an option during checkout!