TCI Vacuum Modulator - Adjustable - GM - Powerglide - 1963-73 H760C01XXL Duration 274 / 282

Duration 274 / 282

but our guide tool can also be used during disassembly

On race day there's some force that pushes you to go faster

Fully charged and ready to install at time of shipping

5 Inch Max Diameter ClutchIncluded Block Plate Must Be UsedRequires A Starter For 157 Tooth Flywheel With A 4

TCI Vacuum Modulator - Adjustable - GM - Powerglide - 1963-73 H760C01XXL Duration 274 / 282GM '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