Helpful tips

Does a Turbo 400 have a kick down cable?

Does a Turbo 400 have a kick down cable?

Instead of a linkage or cable, the TH400 uses an electrical switch that is most often mounted on the carburetor. The factory used a switch located on the carburetor or on the throttle linkage under the dash that at WOT supplied voltage to the transmission.

How do I install Lokar kickdown cable?

Slide the kickdown cable end stop onto the inner wire. Move the throttle to wide open and hold it there while pulling the kickdown inner wire as tight as possible. Slide the cable end stop up against the kickdown throttle body fitting and tighten the set screw using the supplied 5/64″ Allen wrench.

How does a TH400 shift?

The TH400 transmission takes advantage of an electrical slide switch controlled by the throttle linkage. On the other hand, the TH350 uses a mechanical cable kick-down that is connected to the throttle linkage. Despite the difference, the TH400 is considered the heavy-duty version of the Turbo-Hydramatic 350.

How do you test a kickdown switch?

The kick down switch at the gas pedal can be tested with a multimeter(set on ohms). The solenoid in the pan can be tested by applying 12 volts to the vertical connection at the transmission and listening for a click emanating from the pan. You need to ground the transmission when you do that.

What speed does TH400 shift?

Re: at what speed does your TH400 shift THe stock shift points are in the factory chassis service manual around 7-35.

How fast can a TH400 go?

Registered. you can go much faster than 55 depending on gear ration and tire size. The th400 is not an overdrive, but the 6.2L can spin pretty fast. The tranny should have nothing to do with it.

What is a switch pitch TH400?

A switch pitch 400 is simply a TH400 with a few special parts in it. Primarily it is a torque converter that has vanes that can be set in one of two positions via a solenoid and hydraulics which changes the stall speed. They were initially installed in a lot of big GM cars from 65 through 67 I believe.

What kind of kickdown cable does Lokar use?

Duo-Pak only available for carbureted applications with Holley, Edelbrock, AFB, Quadrajet and In-Line Dual Quad carbs. Lokar’s “U-Cut-to-Fit” Kickdown Cables are available in either stainless steel braided housing, black stainless steel braided housing or black housing.

Where is the electrical connection on a TH400?

Instead of a linkage or cable, the TH400 uses an electrical switch that is most often mounted on the carburetor. The 12-volt connection is a single spade connector just above the oil pan rail on the driver’s side about halfway back–at least that’s where it is on my TH400.

What kind of cable do I need for Lokar cruise control?

Lokar Cruise Control Cables are for use with “Rostra” cruise control kits. Kit includes 4′ stainless outer housing designed with a specially extruded liner for extended life of the cable and 5′ of stainless inner wire, which replaces the black plastic cable in Rostra Kits. Cables are “U-Cut-To-Fit” inside and outside of firewall.

Can a TH400 be swapped into a different vehicle?

Often when a TH400 is swapped into a different vehicle, this downshift electrical switch is overlooked. Besides the loss of any kind of downshift function, the real danger is that under WOT the transmission has not been commanded to increase line pressure.