For easy valve spring installation with the turn of a socket wrench, look no further than Texas Speed's valve spring installation tool kits!! Our installation tools not only make installing your springs easier, but are also less stressful on the head casting compared to traditional spring compressor tools. Our LS1/LT1/LS2 kit works for both the intake and exhaust valves of cathedral heads. Also works for LS3/LS7 exhaust valves! Purchase the LS3/LS7 spring installation tool kit for the additional tool to work on the offset intake valves of LS3 and LS7 heads!