Manley Valve - Exhaust, Valve-P/F 1.600,+.100 firebird are too complex for the

are too complex for the average person to be able to revalve

This front sway bar is more rigid than the factory front sway bar and bolts directly in place with no modifications

lack of engine wear and ease of tuning

Upgrade to this double adjustable panhard bar for superior strength and rear end control

custom designed rod end spacers

Manley Valve - Exhaust, Valve-P/F 1.600,+.100 firebird are too complex for theManley 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