Head Diameter: 1.575 in. - Stem Diameter: .3136 in. - O/A : 4.923 1984-pontiac-firebird-esi1382254 The dual rate springs offer

The dual rate springs offer plenty of support

These control arms are constructed from 1

The 26 Series shock is a one piece monotube shock that is well suited for a variety of track conditions or as a traction shock in various applications

The sway bar is CNC-formed for exact manufacturing tolerances and repeatable high quality

and V6 auto Camaros

Head Diameter: 1.575 in. - Stem Diameter: .3136 in. - O/A : 4.923 1984-pontiac-firebird-esi1382254 The dual rate springs offerManley 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