GM Turbo 400 TH400 Quick Spool Valve System They are individually hand turned

They are individually hand turned and pressure tested to exceed performance standards

Aggressive

Speedmaster's Type II power steering pump reservoirs complete your steering pump installation

The successful formula of offering a complete engine drive accessory kit has now been applied to the Serpentine with Speedmaster pulley systems

Featuring billet aluminum construction with a sleek black finish

GM Turbo 400 TH400 Quick Spool Valve System They are individually hand turnedThe Speedmaster quick spool system is a pressure relief system for the Turbo 400. This system dumps the converter outlet pressure, loosening the converter and helping spool the turbo quickly. This system can be wired directly to the transbrake wire. The quick spool system can be initiated via a switch, timer, or digital output signal.