TH400 Adjustable Transmission Modulator

B&M accessories help you complete your project with parts designed and selected by the experts at B&M. This vacuum modulator comes pre-adjusted for 'normal' shift points, but it is fully adjustable, allowing you to customize the shift points (within a range of 2-4 mph).

Please note: If you have a big camshaft and your engine does not make adequate vacuum, you will not be able to make the stock or B&M modulator work properly, usually resulting in late, hard shifts.

Adjustment Procedure: adjustment is done through the vacuum nipple with an allen-wrench.  Instructions are included that describe how to dial in your shifts by turning the allen screw clockwise vs counter-clockwise.

Features:

• Vacuum modulator is fully adjustable to custom tailor your shift points (within 2-4 mph)
• Comes pre-adjusted for normal shift points to get you started
• Applications include TH350 and TH400 transmissions
• Genuine B&M accessory
• Backed by the manufacturer with a 1 year limited warranty
• Fully Adjustable!