Ferrea 6000 Series Competition Exhaust Valve - SB Chevy - 1.600", 11/32" Stem Diameter, 5.160" Overall Length - (Set of 8) NG22 4514SP-16 spacers and 1401N-16 rocker

4514SP-16 spacers and 1401N-16 rocker nuts

1983-1990 GMC G2500

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Ferrea 6000 Series Competition Exhaust Valve - SB Chevy - 1.600", 11/32" Stem Diameter, 5.160" Overall Length - (Set of 8) NG22 4514SP-16 spacers and 1401N-16 rockerThe 6000 Series Competition Valves are designed to provide excellent reliability in an environment of high spring pressures and roller cams, at a budget price. They have higher fatigue resistance and tensile strengths than our competitor's best offerings. These valves can be used in Drag and Oval Track racing applications. To manufacture the valves Ferrea uses an exclusive two step slow forging process using EV8 stainless steel on both intake and