stall speeds
 

Hi, new to this forum. I have a 1973 440 four bbl from a 1973 Dodge motorhome with the original 727 transmission with an added shift kit. I am trying to find out what the stall speed is for this transmission / motor combination as I want to better the launch off the line by changing the stall speed. I have the motor / 727 in a 1956 Dodge pickup with 3.91 rear gears. Any suggestions. Thanks, Jim

Jim -

If the motor and trans are stock. it will be a low compression engine hopefully producing a fair amount of torque (low end power). With those gears, you probably don't need to go too high on the stall speed.

The general thinking is to have the stall at about the beginning of the engines power band. If you start making power around 1500 rpm, then that should be your stall. (Stock for most cars was about 1200, not sure about motor homes.)

Archer

To test the stall speed of what you have got you can apply the parking brake and hold your foot on the brake and power brake/torque load the engine in drive and the highest reading of rpm is what the stall speed is of that convertor....Note: don't hold it to long it will heat the convertor up pretty quick...Most motor homes were about 2000rpms...Bill

Hi Jim and welcome to the forum... Be sure to check out the Mopar of the Month contest.....

Welcome to the forum