djquik1

Has anyone done this yet?

I have searched several places on the net and not found a good write up on this.

Lenn

What is this mod and what does it do?

djquik1

The J-mod or Jerry's mod is a home made shift kit from the guy that designed the 4R70W and the AOD/AODE transmission.

There are enough differences between the 4R70W and the 4R75E that I don't want to do it blindly......But I know some people have done it already.

djbruce26

Most of the upgrades in the JMOD were factory trans specs by early 2000-2002 timeframe.. the vehicles that benefitted the most were produced in the 90s. Given the most recent years using the 75E I would assume that the most difference would come from different/removed accumulator springs but I would suspect that the majority of the valve body hole modifications are already good enough to provide a decent shift speed with longevity.

musclemerc

I have a J-Mod on my 2003 Marauder with a 4R70W trans., it works great. It dosent control when it shifts but how it shifts and my car is not a 1990's vehicle by far. Check the parts and make shure they will fit and go for it. Go to Alternative Automotive.com and ask for Lidio he is a know all on Ford automatic transmissions and has been doing this for some time now.

djquik1

I had a feeling that there was some things that might be of benefit by doing this mod.

Hysteric

It was a popular mod on some forums I used to frequent. www.tccoa.com (thunderbird/cougar club of america) They did this mod to their transmissions too. Too daunting for me though. Messing with an automatic tranny looks like brain surgery.

musclemerc

Hey Quick, send me a PM i found step by step illustrated instructions on this mod. Lidio can help get the parts, i verified this will work on our trucks

obusnizzle

http://www.tccoa.com/articles/tranny/index.html