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TCI Auto 221200 TH400 Full Manual Valve Body Forward Shift Pattern

(GMC G2500 1979-90, K1500 1979-86, 1988-90, C1500 1979-86, 1988-90, K2500 1979-86, 1988-90, Jimmy 1970-74, 1977-90, C3500 1979-86, 1988-90 + 207 more models)

Manufacturer

Picture for manufacturer TCI Auto

Part Number

221200
4 reviews
Sale Price

$473.28

Out of Stock

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No Hassle Returns

No Hassle Returns

Live-in-stock inventory

Live-in-stock inventory

Fitment guaranteed

Fitment guaranteed

Product Details

The TCI Auto 221200 is a high-performance full manual valve body designed for the TH400 (Turbo Hydramatic 400) transmission. This valve body eliminates the automatic shifting function, giving the driver complete control over gear selection for improved performance and consistency in racing applications.

Key Features:

  • Full manual operation for precise gear control
  • Forward shift pattern (1-2-3) for intuitive shifting
  • Eliminates governor and modulator for consistent shift points
  • Ideal for drag racing, street performance, and off-road applications
  • Direct replacement for stock TH400 valve body
  • Provides quicker, firmer shifts under full throttle
  • Prevents accidental downshifts during aggressive driving

This valve body requires the driver to manually shift through all gears, making it perfect for performance enthusiasts who want maximum control over their transmission. The forward shift pattern follows the standard 1-2-3 sequence, which is familiar to most drivers and reduces the chance of missed shifts during competition.

Products specifications

Fits

GMC G2500 1979-90, K1500 1979-86, 1988-90, C1500 1979-86, 1988-90, K2500 1979-86, 1988-90, Jimmy 1970-74, 1977-90, C3500 1979-86, 1988-90, K2500 Suburban 1979-86, K3500 1979-86, 1988-90, C15/C1500 Pickup 1968-74 + 204 more models

Full Manual

Yes

Notes

This valve body also includes an engine braking option.

Quantity

Sold individually.

Trans-Brake Included

No

Trans-Brake Provisions

No

Valve Body Material

Cast iron

Valve Body Style

Full manual

Title

221200 Valve Body Th400 Fwd,Eng Brkng

Valve Body Series

Full Manual

Title

TH400 Forward Shift Pattern Full Manual Valve Body.

Prop 65

WARNING: Cancer and Reproductive Harm P65Warnings.ca.gov

Going through the screens was eady enough. Prompts were great.

Quick shipping and a part that worked.<br><br>order 104-9436863-0564219

I am extremely satisfied with Autoplicity in terms of service, price, and shipping. I was shopping for a set of N-FAB step bars for my truck and was ready to purchase from Amazon when I decided to look around to see if there were better prices. I stumbled upon Autoplicity and was surprised to see their price on the bars. I checked with their online chat customer service to confirm that they would fit my truck and that the price was for a pair of the bars and not just one. (That's how low the price was!). I then placed my order and the bars arrived at my doorstep 3 days later! Autoplicity gets an A+ in my book and I'll definitely be coming back.

Very fast shipping and price is rite

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