anyone know if the Mach 1 converter and theGT converters will swap? i know they are different stalls and i want the higher stall one. i can get hold of a Mach 1 converter for $100.

 

It's only a tiny bit higher, 26 to 29 RPM

from the 2003 shop manual:


Seems hardly worth the bother to me...

 

i can tell you the stock GT converter is much lower than that. it's barely over 1700

 

Then I guess Ford does not know what they are talking about, that's the info provided in the 2000 through 2004 shop manuals...

 

Yes, you can use the Mach 1 stall in your GT. I'm not sure how much better the Mach 1 stall is compared to the GT especially for the amount of work needed to swap converters.

 

you are wrong

Your probably referring to what you can foot brake the car too...you will never footbrake the car to the full stall.

For example, if you put a 3500 stall in the car, you still will probably only be able to footbrake to 2500 at the most.

if you put the car in 2nd gear and floor it and watch the RPMS jump, they should jump to about 2500 rpms...which is the stall speed.

Switching to a mach 1 converter is pointless...save up some money and buy a decent 3200-3500 converter.

 

the converter and trans from the Mach are all messed up anyway....but the 4V is not.

 

Having only owned two automatics in my life I had not considered how one might be determining the stall speed, however if indeed the test was to brake the car, and nail the throttle, then as long as the engine is running the converter is obviously not "stalled"...

 

the converter will allow the engine to rev until it either breaks the tires loose, overpowers the brakes (which enough grip) or the engine stops revving. mine stops at 1700. when i take off it only revs to 1700 before the car starts moving.

 

I think we are looking at this from at least two perspectives, braking stall speed is always less than true stall speed, which I am certain is what the shop manual specs provide.

So as the shop manual lists similar number for both the GT and Mach 1 converters I think it safe to assume there is no practical advantage to be had by moving to the Mach 1 unit...