Ferrea Competition Plus Hollow Stem 2.020" Intake Valves (Set of 8) - SB Chevy - 11/32" Stem Diameter - 5.010" Length Engine Block Hardware Made of Hyper-Flex(TM) polyurethane that

Made of Hyper-Flex(TM) polyurethane that lasts much longer than O

540" max lift at recommended installed height

Foam Lining

Oil Pan Bolts"

4-1/2" wide

Ferrea Competition Plus Hollow Stem 2.020" Intake Valves (Set of 8) - SB Chevy - 11/32" Stem Diameter - 5.010" Length Engine Block Hardware Made of Hyper-Flex(TM) polyurethane thatAn important factor to take into consideration to increase the engine's RPMs, is the valve train weight. Of course, the valve being a main component, the design has to be perfected to accomplish the weight reduction to allow higher RPMs. Ferrea's latest contribution to this area is the introduction of its Lightweight Hollow Stem Valve. We developed a manufacturing process that gun drills and micro polishes the stem to achieve a valve reduction in