COMP Cams Pro-Magnum Hydraulic Lifters Ford

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: Ford, V6 231, 6 Cylinder 240-300. Specifications: .875" Diameter - 105g Weight - 1.95" Seat Height.