tugger compatibility

[BigRed2]

I'm having my transmission rebuilt and was wondering if the transgo tugger shift kits work good and do they work good with programmers i have a triple dog in my truck-thanx John

[BigRigs]

Just had my trans customr rebuilt w/transgo parts and they are great....but...we need more info....year, trans,etc

[ipz2222]

If the programmer ups the pressure in the trans, you will have one hard shifting tranny!!!!
Most of my customers have programmers so i always set the tugger kit on the low side. Works great that way.

[BigRed2]

1999 7.3,4r100 trans, it was a jasper trans with updates, trans worked great until the front seal blew out, plus it was probably ready for a rebuild had just about 200,000 on it, I think I will go with the tugger and set it low-thanx guys

[FordNutz]

Originally Posted by ipz2222

If the programmer ups the pressure in the trans, you will have one hard shifting tranny!!!!
Most of my customers have programmers so i always set the tugger kit on the low side. Works great that way.

Just curious, how are you setting the pressure with this kit?

[ipz2222]

The kit has a heavier spring for th main pressure. What I am controlling with the kit is not the main presssure but the shift pressure. Different springs in the v/body and different size holes in the plate that comes with the kit.

[FordNutz]

The boost valve spring? I figured the springs control mostly fluid speed as opposed to pressure along with larger holes.

[ipz2222]

Hydralic pressure is very difficult to explain with out graphs. The spring between the boost valve and pressure regulator controls minimum line pressure. The boost valve puts more pressure against the pr valve makeing the line pressure go up when the computer commands it. The springs in the valve body are actually accumulator springs, kinda like shocks. Raise line pressure, drill feed holes bigger, add extra springs to the accumulator valves and you can get some damageing shifts. I can tell you when I feel a perfect shift, but I can't explain it. Almost failed english in high school. bg

[FordNutz]

Thats cool, I understand. I have a background in hydraulics and fluid dynamics. I agree, you shouldn't raise the pressure if the tune/program does.