COMP Cams Pro-Mag Hydr Lifters Buick 35

Pro Magnum Hydraulic Flat Tappet Lifters. Specifically designed to perform at higher engine speeds. Proper position of internal piston at higher RPM prevents lifters from harmful "pumping up". Unique design yields significant power increase over standard hydraulic lifters. Adjustable valve train required. Pre-load .002"-.004" with engine warm. Applications: Buick V8 350-455, Specifications .842" Diameter - 94g Weight - 2.01" Seat Height. These Pro Magnum hydraulic lifters are designed to perform at high RPM without any harmful pumping up. These lifters for Buick 350-455 yield significant power increase over standard hydraulic lifters. Available individually under 865-1, Available in a set of 12 under 865-12