Head Diameter: 1.455" - 37mm (OEM sized)

Stem Diameter: 7mm

Overall Length: 5.395"

Tip Length: .455"

Head Design: 12 degree

Lock Design: OEM 3 Groove

Application: 5.4 GT / SHELBY V8 4V DOHC

Valves per Engine: 16 - (Valves are sold EACH)

Material Notes: SPECIAL ALLOY - (Turbo, Blower, Nitrous)

Ferrea 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 technological gains, which are implemented in each of our competition plus valves. They are engineered for high RPM, high horsepower racing engines, and are chosen by many top NASCAR, Drag, Oval & Sprint Car - racing teams.

The super alloy valves represent the highest level of sophistication in valve technology. These valves are designed to handle the extreme heat requirements and punishment of today’s Nitro Fuels, Supercharged, Turbocharged, Nitrous Oxide, and Marine race motors.

Many Top Fuel and Funny Car teams can confirm the performance and reliability of these valves which are now available for many engine combinations including Drag Race, Time Attack, Road Race, Endurance and Marine applications. We have expanded our offerings for the Top/Fuel and Funny/Car applications with a Super Alloy Valve available for every after-market head in both 11/32 & 3/8-stem sizes. Our super alloy valve program within the Sport Compact market is second to none. We manufacture valves for racing teams around the world competing in World Rally Challenge, Drag Racing, and Road Racing.