RHS Pro Action LS3 Cylinder Head - Pre-Assembled With .660 Lift Dual Springs

Serious about LS power? Meet the RHS Pro Action LS3 Cylinder Head - your ticket to serious performance gains. These heads come pre-assembled with .660 lift dual springs ready to rock right out of the box. Using RHS Clean Cast Technology, you're getting smoother surfaces and zero casting flaws - no compromises here. The bronze/manganese valve guides ensure durability and perfect valve seat concentricity. Designed for 4.000+ bore LS engines, these heads offer excellent air and coolant flow that'll wake up your motor. Whether you're building a street machine or a track monster, these deliver factory fit with aftermarket performance. Many consider these the best value in LS heads available today, and once you bolt them on, you'll understand why. The attention to detail is incredible, and the performance speaks for itself. Your LS build deserves this level of quality!