TCI Vacuum Modulator - Adjustable - GM - Powerglide - 1963-73 H77603FM Holley Sniper continues to push

Holley Sniper continues to push the aftermarket by introducing fabricated carbureted and EFI intake manifolds for GM Small Block and LS along with Ford 4

Can be used with the following Fuel Filters: 12301

The new aluminum medium dish structure allows the wheel to come towards the driver to facilitate the usage of aftermarket MPI hubs or quick releases

5" in diameter and has straight vane for cooling and strength

TCI Vacuum Modulator - Adjustable - GM - Powerglide - 1963-73 H77603FM Holley Sniper continues to pushGM '63 '73 Powerglide Adjustable Vacuum Modulator Valve. This TCI Adjustable Modulator Valve is designed specifically for GM '63 '73 Powerglide Transmissions. The vacuum modulator is a vital component of automatic transmissions. It tells the transmission what kind of load is being put on it, allowing the transmission to react with the proper line pressures and shift points. Over time, modulators can develop leaks, suffer ruptured diaphragms, become