Ferrea Competition Plus Exhaust Valves - SB Chevy - 11/32" Stem, 1.600" Head Size, 4.960" Overall Length - 12 Super Flo. (Super Alloy). Stk/+.050 - (Set of 8) 36004R 1955-1960 GMC Truck

1955-1960 GMC Truck

In order to achieve a flatter flow curve

Swivel Adapter Fitting 6AN To 1/2"NPT Aluminum 90 Degree

These different members

FLM V8 427CI 7

Ferrea Competition Plus Exhaust Valves - SB Chevy - 11/32" Stem, 1.600" Head Size, 4.960" Overall Length - 12 Super Flo. (Super Alloy). Stk/+.050 - (Set of 8) 36004R 1955-1960 GMC TruckFerrea Competition Plus Valves have built a reputation as the industry's most reliable extreme duty valve. We, at Ferrea, are dedicated to providing the absolute best product on the market. Our extensive R & D programs provide tehcnological gains, which are implemented in each of our competiton plus valves. They are engineered for higt rpm, high horsepower racing engines, and are chose by many top NASCAR, Drag, and Oval & Sprint Car racing teams. To