TCI Vacuum Modulator - Adjustable - GM - Powerglide - 1963-73 Digital Temp Gauge Pro-Control output enables a 1

Pro-Control output enables a 1

Dash To Firewall Adjustable Bracketry

and 750 cfm vacuum secondary models

1959-1960 Chevrolet Kingswood

Racepak Adapter for OBDII ECU

TCI Vacuum Modulator - Adjustable - GM - Powerglide - 1963-73 Digital Temp Gauge Pro-Control output enables a 1GM '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