Manley Valve - Exhaust, Valve-FD 427 S/D 1.750 1990-chevrolet-camaro-esi6096549 making it ideal for high-performance

making it ideal for high-performance driving while remaining street-friendly

cutting or grinding

Constructed with CNC machined 0

thanks to UMI’s single adjustable rod end design

the main hoop comes with dimple-die taco gussets

Manley Valve - Exhaust, Valve-FD 427 S/D 1.750 1990-chevrolet-camaro-esi6096549 making it ideal for high-performanceManley Severe Duty Valves deliver the ultimate in strength, reliability, and high performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH 428 for exhaust and NK 844 for intake), offering unmatched tensile strength compared to competitive alloys. In fatigue testing at 40,000 psi and 1400F, Manley exhaust valves endured 100 million cycles, while competitors failed after just