Ferrea Competition Plus Hollow Stem 1.600" Exhaust Valves (Set of 8) - SB Chevy - 11/32" Stem Diameter - 4.960" Length 1443A25 and stainless steel compression limiters

and stainless steel compression limiters to prevent

thread pitch to thread pitch / which gives you more consistent rocker geometry

no calibration required

while at the same time helping keep the inside of your visor clear

1977-1977 Oldsmobile Custom Cruiser

Ferrea Competition Plus Hollow Stem 1.600" Exhaust Valves (Set of 8) - SB Chevy - 11/32" Stem Diameter - 4.960" Length 1443A25 and stainless steel compression limitersAn 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