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Black Anodized Construction
75-to-1 sealed gear-reduction drive and full ball bearing construction
A must for Sprint
The Edelbrock #60815 Performer RPM head is perfect for street performance
Manley Valve - Exhaust, Valve-S/D 1.900,+.100 corvette Black Anodized ConstructionManley 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
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