Th400 Stock Torque Converter

Th400 Stock Torque Converter FAQ

What is the stall ratio of a th400 torque converter?

The stock TH400 torque converter, for example, multiples torque 2:1 at low RPM so that a moderateratio first gear can be used. The torque-converter multiplication and the 2.48 gear give a 5:1 stall ratio, and this combination provides excellent acceleration from a stop.

Are th350 and th400 torque converters interchangeable?

A stock 400 is 13" and a stock TH350 is 12". They are interchangeable, if you use the 13" converter in a TH350, be sure it clears the case. If you are doing a TH400 deal, use the TH350 converter...

Is there a stahl speed on the th400?

Neither have any indication of stahl speed on em. A new converter is not in the budget. The TH400 was rebuilt less than 200 miles ago in the burb and the torque converter was replaced at that time. Any input? You have discovered the difference in a stock TH350 and 400 converter..

How many quarts of transmission fluid does a th400 take?

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.