Manley Valve - Exhaust, Valve-HEMI 6.4 R/M 1.654 B/L 1987-pontiac-firebird-esi3246161 All QA1 springs go through

All QA1 springs go through intensive manufacturing processes to ensure consistency

Manufactured from heavy-wall 29mm (front) and 32mm (rear) DOM tubing

which further reduces NVH

The front frame and suspension of your G-Body can flex under hard braking and lateral loading

BBK fuel in tank pumps are available in 110Lph-155Lph-190Lph-255Lph

Manley Valve - Exhaust, Valve-HEMI 6.4 R/M 1.654 B/L 1987-pontiac-firebird-esi3246161 All QA1 springs go throughManley? s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM