[ncsubowen]

So I've been reading around and there's obviously a litany of modifications available for our cars, one of the ones I see the least literature on is a 'shift kit'. I have a 2004 V6 Auto and the few things I've read seem to bill it as a must have for any of us automatic owners.

Any thoughts on the matter? Currently my only modification is my XCal X3, CAI is soon to be added (once I get a shipping quote from one of our memebers) and I'm in the market for an exhaust system (nudge to anyone selling one).

A follow up on the exhaust as well - not accounting for sound, I read that our stock headers have plenty of air flow, so I don't want to replace those, but what's the best option for an exhaust system? Not brand or anything, but setup. I see y, h, and x pipe options, what's the better of the three?

Turbo would be nice but I'm not technically inclined enough to do it myself and to be honest I think there's a lot more I can do in the short term without spending 5 grand.

Thanks for your opinions and help!

[willis6er]

idk anything about shift kits. Y pipe is what is stock on a mustang, and most people agree that it is too quiet, even with aftermarket mufflers. The x pipe tends to be a bit raspy but loud on our cars. the h pipe is lower and deeper tone than the x pipe but not quite as loud. i have an h pipe with flow 40s and all cats and i think it sounds good (at least for 6). there are many different opinions and its all really according to which sound you like the best. try looking up some videos on youtube. also a cai will give your exhaust a deeper and meaner sound when you get one.

[FX4DTUF]

yeah can do a trans go shift kit that is personally way better than b&m's shift kits because me and my buddies put them both in different trucks that had the same engine and trans and the trans that the b&m was in blew up after about 3 months of driving and the trans go transmission is still together

[FX4DTUF]

oh and you can get them from summit racing or jegs.

[ewells2420]

JMOD or Jerrys Mod for the 4R70W transmission. You basically drill some holes into the seperator plate and replace some springs.

[04stang123456789]

I have a shift kit in my car and I love it, and it impresses people even though it is still a V6

[casper gt]

trans-go is the only way to go in a 4r70w. don't waiste your time on the j-mod B/S.

[sudbury33]

Kinda off topic, but try looking on Americanmuscle for your V6 stuff. They have alot and everything is free shipping. I got my CAI for $75.

[white03v6]

for exhaust stay away from the y-pipe, it sucks to say the least. and performance-wise, a midpipe wont make a difference. you could go with x or h and it would be the same, except the h will be deeper and the x will be raspier. the 3.8s are even-firing, so you could even go with divorced duals (two separate pipe running from the headers back). i cant help with the shift kit though, i have a manual

[Ninjawafers!]

a shift kit is worth it if you want a performance v6 auto. a turbo is the best thing you can get as far as power wise.. if you want big power, turbo is the way to go. there are other options, such as doing a full bolt on car, supercharger, and nitrous. read the stickies at the top of the v6 forum to familiarize yourself with them

[ewells2420]

Originally Posted by casper gt trans-go is the only way to go in a 4r70w. don't waiste your time on the j-mod B/S.

Have you even ever done a Jmod or been in a stang that has the jmod? From your comment I highly doubt it, or you would know its not BS.

For your information btw, it was created by one of the 4R70Ws engineers. I trust an engineer over you anyday.

[casper gt]

Originally Posted by ewells2420 Have you even ever done a Jmod or been in a stang that has the jmod? From your comment I highly doubt it, or you would know its not BS. For your information btw, it was created by one of the 4R70Ws engineers. I trust an engineer over you anyday.

well I've only been building performance auto's for 20+ yrs, what do I know . that being said, yes I've ridden in plenty of j-modded car's & was never impressed with it, all the j-mod does is let the trans slam into gear, thats it. it doesn't address even one performance weakness in the trans. I think you should do some research before you speak up. oh & I know all about Jerry being one of the engineer's of the trans (4r70w), but do you think he's the only transmisson engineer in the world, I'll bet he isn't.

[ewells2420]

I never said it was better in terms of fixing any weakness in the trans. And the OP never mentioned wanting the tranny to be stronger.

[casper gt]

Originally Posted by ewells2420 I never said it was better in terms of fixing any weakness in the trans. And the OP never mentioned wanting the tranny to be stronger.

why else would you put a shift kit in other than to make the trans better/stronger? you wouldnt. your statement make's it VERY clear how much you know about automatics.

[Stang Tech]

if you really want to fix the weakness of the 4r702 trans then you are going to be doing more then just a shift kit. but hey i am just a ford certified tech. the jmod when done properly doesn't just slam the trans into gear it helps with the trans fluid flow thru the valve body.

[ewells2420]

Originally Posted by Stang Tech if you really want to fix the weakness of the 4r702 trans then you are going to be doing more then just a shift kit. but hey i am just a ford certified tech. the jmod when done properly doesn't just slam the trans into gear it helps with the trans fluid flow thru the valve body.

EXACTLY! It increases fluid flow to firm up shifts and make it shift faster. I dont talk shit unless I know what I am talking about 90% of the time. And IF I am wrong, then I will admit it.

So casper, you need to shut the hell up. Its obvious YOU dont know what you are talking about. So take this icon and shove it up your ass.

[ajm]

Originally Posted by ewells2420 EXACTLY! It increases fluid flow to firm up shifts and make it shift faster. I dont talk shit unless I know what I am talking about 90% of the time. And IF I am wrong, then I will admit it. So casper, you need to shut the hell up. Its obvious YOU dont know what you are talking about. So take this icon and shove it up your ass.

Well considering a real shift kit helps address the issues listed below...and the jmod doesnt -- just like casper said all it does is make the trans shift faster/firmer sure if thats what you want, and a shitty way of doing it at that by all means do it. On the other hand you can pay a bit more and get a real shift kit not some junk you rig up at home by drilling a few holes in the separator plate following a guide.


Inadequate lube
Overdrive band failure
3rd clutch failure
2nd roller clutch failure
Converter shudder
New boost valve included to replace worn OE valve

Yup...jmod sure does cover all that doesnt it.. ...jmod = joke/bullshit "shift kit" end of story.

[ewells2420]

Again I never said it does cover any of that. You guys sure do love putting words into my mouth.

[casper gt]

Originally Posted by ewells2420 Again I never said it does cover any of that. You guys sure do love putting words into my mouth.

you did it to your self, when you jump on an auto post & start talking about the j-mod like it's the wheel then be prepaired for some heat. best advice is to go over to Click Click Racing Forums - Powered by vBulletin & read up on shift kit's vs. j-mods, you may find some intresting info.

[Stang Tech]

I am talking a real j-mod done with new internals i just check most shift kit's are just separator plates with gaskets and new solenoids the j-mods i do at ford are done to the valve body are more then just drilling some holes. But like i said i am just a ford certified tech so how knows.


OH and to ajm:
to fix this
Inadequate lube
Overdrive band failure
3rd clutch failure
2nd roller clutch failure
i would recommend rebuilding the trans cause a shift kit or j-mod might help it but it will still fail one day.