[935.0]

I have a 2000 GT, 4.10 gears, C&L 80MM Kit, Summit UDP's, and a SCT Xcal2 tune. I am AUTOMATIC though, and I was wondering what if anything a B&M shift kit does for me? and how is it diffrent from just switching my car from 1st to 2nd to drive, to shift the car manually as is. Im sorry if its a dumb question, Im just trying to get the most out of my auto.

Appricate the help

[steve_stang2003]

Originally Posted by 935.0 I have a 2000 GT, 4.10 gears, C&L 80MM Kit, Summit UDP's, and a SCT Xcal2 tune. I am AUTOMATIC though, and I was wondering what if anything a B&M shift kit does for me? and how is it diffrent from just switching my car from 1st to 2nd to drive, to shift the car manually as is. Im sorry if its a dumb question, Im just trying to get the most out of my auto. Appricate the help

1. Put a transmission cooler on it ASAP.
2. Forget the shift kits and do the JMod.

TCCoA Tech Articles

[Doc8224]

Originally Posted by steve_stang2003 1. Put a transmission cooler on it ASAP. 2. Forget the shift kits and do the JMod. TCCoA Tech Articles

While I agree about the j-mod. The shift kit wiill do the same valvebody mods as the J-mod plus more.

[whitehorse01]

what does a shift kit do for automatics?

[johnr2001]

Originally Posted by Doc8224 While I agree about the j-mod. The shift kit wiill do the same valvebody mods as the J-mod plus more.

shift kits for the autos are junk, they do not do the same as the j mod.

[BWAL]

what is the J mod?

[Doc8224]

Originally Posted by johnr2001 shift kits for the autos are junk, they do not do the same as the j mod.

Yes they do. the J-mod is enlarging certain holes in the seperator plate for firmer shifts and better fluid flow. 01+mustang automatics (4r75w's) already have this done. The shift kit will come with the drill bits to enlarge the holes in the seperator plate(the J-mod) and some of them will come with better accumulator springs, better valves for the valve body,etc. Considering you can get the parts you need from Ford for $50 and a good shift will cost about $100 give or take, some people just do the j-mod and nothing else. But if you want more firmness in your shifts you will need a shift kit or a tuner.

[ZKid]

Originally Posted by Doc8224 Yes they do. the J-mod is enlarging certain holes in the seperator plate for firmer shifts and better fluid flow. 01+mustang automatics (4r75w's) already have this done. The shift kit will come with the drill bits to enlarge the holes in the seperator plate(the J-mod) and some of them will come with better accumulator springs, better valves for the valve body,etc. Considering you can get the parts you need from Ford for $50 and a good shift will cost about $100 give or take, some people just do the j-mod and nothing else. But if you want more firmness in your shifts you will need a shift kit or a tuner.

Like Doc said do the shift kit, you WILL be happy with the improvement. Ive done shift kits on 3 mustangs and 2 trans ams, with great results every time. The j mod is a way to improve, but if your going to do it why not do it right.

[johnr2001]

Your correct if your going to do it do it right being the j mod. you can get the complete valve body with j mod done for a 100.00 from vap auto and then send your core back for 40.00 back. you looking at 60.oo for a direct bolt in thats easy to do. Do the j mod and get a tuner to make some additional adjustment and you will love your auto. do a trans cooler as well if you have not already. I know several guys who have done shift kits and had nothing but problems. do some more research before you believe all you hear. your going to find more support for the j mod then shift kit I promise you.

[HMUSN]

Originally Posted by BWAL09 what is the J mod?

google it

[jrfan4life]

I Have a 2001 automatic with a Transgo HD2 shift kit and love it, also pared with a TCI tranny cooler, Hughes 2500 stall converter, and a Jet 4 stage shift modgule... I love it!!!!

[MATT02GT]

Tranny cooler, shift kit and a new stall would do wonders

[steve_stang2003]

Originally Posted by Doc8224 Yes they do. the J-mod is enlarging certain holes in the seperator plate for firmer shifts and better fluid flow. 01+mustang automatics (4r75w's) already have this done. The shift kit will come with the drill bits to enlarge the holes in the seperator plate(the J-mod) and some of them will come with better accumulator springs, better valves for the valve body,etc. Considering you can get the parts you need from Ford for $50 and a good shift will cost about $100 give or take, some people just do the j-mod and nothing else. But if you want more firmness in your shifts you will need a shift kit or a tuner.

Actually I believe the later Mustangs have the newer accumulator springs, NOT ALL the enlarged holes. I did the separator plate on my 2003 and it made a huge difference.

The transmission is 4R70W BTW.

If you read Jerry's articles you will see that there are a dozen or more ways to firm up shifts.
Some are better than others and some are downright poor which is why some kits are preferred over others.
Also with the better kits you will get more adjustment of firmness during the install which is a plus for some people

I would say one of the engineers of the 4R70W, Jerry, knows the best method for longevity and performance.

The easiest way to do this is to buy/exchange the Valve body from a place like VAP. All the separator plate holes are already enlarged and the plate is installed in the valve body. All you do is drop it in.

The next easiest method is to buy the separator plate and gaskets from VAP and just install it yourself.
This way if you don't like it, just put your old plate back in.
No drilling of your valve body is needed, just the plate.

Also if you want even firmer shifts there are variations on the jMod that will allow that as well.

Personally, I did the VAP separator plate install and I am very happy with it.
During normal driving the transmission just drops right into gear without the stock delay which your clutches are thanking you for.

If you drive aggressively it will easily chirp the tires when shifting.
Hang on the first time you do this BTW

Good luck!

P.S. Whatever you do get a cooler on that thing ASAP!

[johnr2001]

Originally Posted by steve_stang2003 Actually I believe the later Mustangs have the newer accumulator springs, NOT ALL the enlarged holes. I did the separator plate on my 2003 and it made a huge difference. The transmission is 4R70W BTW. If you read Jerry's articles you will see that there are a dozen or more ways to firm up shifts. Some are better than others and some are downright poor which is why some kits are preferred over others. Also with the better kits you will get more adjustment of firmness during the install which is a plus for some people I would say one of the engineers of the 4R70W, Jerry, knows the best method for longevity and performance. The easiest way to do this is to buy/exchange the Valve body from a place like VAP. All the separator plate holes are already enlarged and the plate is installed in the valve body. All you do is drop it in. The next easiest method is to buy the separator plate and gaskets from VAP and just install it yourself. This way if you don't like it, just put your old plate back in. No drilling of your valve body is needed, just the plate. Also if you want even firmer shifts there are variations on the jMod that will allow that as well. Personally, I did the VAP separator plate install and I am very happy with it. During normal driving the transmission just drops right into gear without the stock delay which your clutches are thanking you for. If you drive aggressively it will easily chirp the tires when shifting. Hang on the first time you do this BTW Good luck! P.S. Whatever you do get a cooler on that thing ASAP!

nicely put

[chalosf]

There is no reason for anyone to pay for a J-Mod, its the easiest thing in the world, the hardest thing is probably to remove the screws, which you have to do even if you buy a pre-drilled one from VAP....If you are going to pay then buy an aftermarket shift kit that comes with everything but don't pay someone to do a J-Mod, even a monkey with tools can do it. i just did it on my car and its very easy.

[935.0]

I have never done transmission work AT ALL....the most I've done is like drop a motor in and hook the tranny to it.

I dont shit about opening one up and doing all this drilling etc you are talking about...and Im in San Diego California. The constant back and forth between jmod and shiftkit is pretty confusing, and they look to be the same damn thing with the jmod just missing the springs and parts extra from a shift kit? Im more confused then when I started and a 100% more frustrated!

[chalosf]

Here is a good guide on J-Mod, like I said before its very easy, its just drilling small holes, nothing else :

D&D Auto Detailing |

[935.0]

"01+mustang automatics (4r75w's) already have this done."

Im a late year end production 2000, with the outward pully, does this apply to me?
How do I check which auto I got? etc etc

[935.0]

Also, I do have my tuner set to firmer shifts for my car, and I do at the moment get better firmer shifts then stock, but its not where I want it.

[johnr2001]

Originally Posted by 935.0 "01+mustang automatics (4r75w's) already have this done." Im a late year end production 2000, with the outward pully, does this apply to me? How do I check which auto I got? etc etc

01's do not have it done, 01's have the 4r70w.