Wilwood Adjustable Knob Style Proportioning Valve - 3/8"-24 IF Quick Release Fitttings Small block Chevy headers extend

Small block Chevy headers extend away from the cylinder head and wrap behind the engine

1972-1980 Oldsmobile 98

Adapts common LS 104 x 70mm bolt pattern throttle bodies to LT 5

Increases power throughput

Wilwood Adjustable Knob Style Proportioning Valve - 3/8"-24 IF Quick Release Fitttings Small block Chevy headers extendThe new generation of adjustable proportioning valves combines the latest refinements to deliver precise pressure metering and strength from a compact forged billet design. Pressure adjustments range from 100 1000 PSI and provide for a maximum decrease of 57% in line pressure, the most of any available valve. Adjuster knob with fine thread tuning provides precise pressure adjustment. This adjustment lets you fine tune the front to rear braking balance