Horsepower is not in the calculation.
Torque is.
Problem is you need to know what the K factors are for each converter and the torque output of the engine.
Thx, that is exactly the info I needed! There are several sites that give the formula for K.
- The mathematical constant that decides a converter's stall speed (in rpm) is called the "K" factor,
- This relationship is expressed mathematically is: K=rpm/torque.
- Once the K factor for a particular converter is determined, the stall speed can be accurately predicted for different torque values
- K is derived from the observed stall speed of the converter divided by the square root of the applied torque.
I understand this won't be "exact", but at this point, if I get accurate numbers for the torque, it will be close enough.
I put together a spreadsheet for the calculations, and it looks like the Low Stall Charger converter fits the need.
Vehicle..........Torque...........Stall...................K
B3500............230................2200.................145.06
Charger.........150................1700.................138.80
Charger.........140................1400.................118.32
5.7.................400................ 2901................145.06
5.7.................400.................2776................138.80
5.7.................400.................2366................118.32
Any comment on the torque numbers used for the 78 318?
Thx
Other variables will have a greater effect on stall than being off 5 or 10 lbs. ft. In your estimate.
