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I have a TH400 trans that I just bought to replace the ailing TH350 in my ’70 big-block Camaro. A friend told me that there’s a special way to set up the kickdown linkage on this transmission but I can’t find any kind of linkage.


Holley offers tips on properly setting up the transmission kickdown levers on GM Turbo Hydro 350 and 400 automatic transmissions. The video also demonstrates how to properly set the throttle valve ...


When swapping the TH400 transmission into any vehicle, this kit makes installation of the transmission's kickdown feature a snap. This switch mounts to either a TH700R4, TH200, TH200-R4 or TH350 throt...


B&M Auto Transmission Controllers, Kickdown Switches suit GM TH400, Kit (20297) See more like this GM Early Turbo 400 TH400 Transmission Kickdown Switch and Bracket 67-70 GM WORKS Brand New


This kickdown kit is designed to be used with Lokar's Carburetor Bracket and Return Springs, part number SRK-4000. Step 1: Remove the cable end stop, kickdown throttle body fitting, and kickdown cable adjuster from the new Lokar Kickdown Cable. Leave the kickdown mounting bracket on the kickdown cable adjuster.


Amazon.com: th400 kickdown switch. ... Lokar XKD-2400HT Kickdown Cable Kit with Black Stainless Steel Housing and Black Aluminum Fittings for GM TH-400 Transmission. $97.74 $ 97. 74. FREE Shipping. Teckpak USA GM TH-350 & TH-200 Detent Cable 1976-86. 4.3 out of 5 stars 19. $18.49 $ 18. 49. FREE Shipping.


Re: th400 downshift switch wiring? The switch needs power from the fuse block (switched power, only on when the ignition switch is on). The other side of the switch goes to the orange wire on the trans. The last picture I posted shows the tab you bolt onto the throttle arm, that rubs against the switch plunger.


GM TH400 Automatic Transmission. The TH400 is an automatic shift, three-speed, longitudinally positioned transmission. It is widely regarded to be a supremely durable and legendary transmission. The TH400 is conservatively rated at 450 ft. lbs. of input torque. Aftermarket building techniques take it well past that figure. History


This transmission does vary in the amount of fluid required, based on certain specifications such as which torque converter is used. That being said, a common fill volume is between 11-12 quarts for a stock transmission. The TH400, or Turbo 400, transmission was a 3 speed automatic that was first produced in 1964.


Read the tech article on installing a 50 Aftermarket Transmission Kickdown Switch on a Vintage Pontiac, brought to you by the experts at High Performance Pontiac Magazine.