TCI 280001 Adjustable Vacuum Modulator for GM Powerglide, 1963-1973

The TCI 280001 Adjustable Vacuum Modulator is designed for GM Powerglide transmissions used in 1963-1973 vehicles. This replacement-style component helps regulate transmission shift timing and feel by responding to engine vacuum, supporting smooth and consistent automatic transmission operation. Its adjustable design allows tuning to match specific vehicle setups, engine combinations, and driving preferences.
The TCI 280001 vacuum modulator is suitable for performance builds, transmission service, and restoration projects where precise shift control is important. It is engineered for compatibility with GM Powerglide applications and provides a practical way to fine-tune transmission behavior without replacing the complete transmission assembly. Follow the transmission manufacturer’s installation and adjustment recommendations for proper setup.
Built for dependable use, this adjustable vacuum modulator is supplied as an individual component and is intended for straightforward installation with the appropriate Powerglide transmission hardware. Verify vehicle and transmission compatibility before ordering, particularly when working with modified engines, aftermarket components, or non-original applications. The TCI brand is recognized for transmission and drivetrain components designed to support reliable performance in street, racing, and custom automotive applications.

Features:

• Brand: TCI

• Part Number: 280001

• Application: GM Powerglide transmissions

• Vehicle Years: 1963-1973

• Type: Adjustable vacuum modulator

• Quantity: Sold individually

• Air Restricted: No

• Truck Freight Only: No