1988-1994 GM TH400/475 Automatic Transmissions.

The B&M® Shift Improver kits™ feature two options to recalibrating your 1988-1994 GM TH400 and TH475 automatic transmissions. First is the HEAVY DUTY set-up, giving you firm positive shifts without loss of driver comfort for improved performance in all street vehicles. This is a great option for performance street driving or towing. The second is our STREET/STRIP set-up. Be warned, this will deliver firm positive shifts you will feel, along with easily chirping the tires when shifting somewhat aggressively. This setting is recommend for high performance street/strip use, or for competitive events when you want the hardest, quickest shifts possible from a shift improver kit.

Features:

  • Perfect for Off-Road, Towing or Street/Strip Use
  • Eliminates Soft and Sluggish Shifts
  • Over 65 Years of B&M Quality
  • Eliminates Shift Overlap
  • Provides Crisp Shifts
  • Easy Installation

Specs:

Automotive Item Grade High Performance
Brand B&M
Emission Code 5
Gasket Included Yes
Instructions Included Yes
Product Type Automatic Transmission Valve Body Kit
UPC 019695202613
California Proposition 65 Chemical Name Cadmium and cadmium compounds
California Proposition 65 Required Yes
Part Number 20261
SKU 20261
Barcode # 19695202613
Brand B&M
Shipping Weight 0.4000kg
Shipping Width 0.100m
Shipping Height 0.350m
Shipping Length 0.430m

Be The First To Review This Product!

Help other Superior Auto Parts users shop smarter by writing reviews for products you have purchased.

Write a product review

More From This Category