Jerry's mod on a 2001 mustang gt??? - TCCoA Forums
 
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post #1 of 19 (permalink) Old 12-28-2004, 11:55 AM Thread Starter
 
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Jerry's mod on a 2001 mustang gt???

Can jerry's mod be performed on a 2001 mustang gt? If so, are the steps the same or are some parts different? I want this thing shifting hard/firm- needs to handle 400-450 hp. thanks
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post #2 of 19 (permalink) Old 12-28-2004, 12:26 PM
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1. Yes

2. Same proceedure, just some parts are already updated- do a quick search for 01 gt tranny

3. No problem. Question is, can the internals and the rest of the driveline handle it?

Jay

These are highly engineered precision vehicles, the first step in diagnosing the problem is to strike the suspected offending part sharply and repeatedly with a blunt object, then re-test.
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post #3 of 19 (permalink) Old 12-28-2004, 02:11 PM
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if you want a shift kit or whatever, just drill the plate per jerrys specs and remove the 2-3 spring.

If you want a race spec transmission to support 400+ at the wheels then your stock 4r70w is not going to cut it.

And jerry outlines how to build up a 5.4 truck trans.

JH
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post #4 of 19 (permalink) Old 12-28-2004, 04:16 PM Thread Starter
 
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Thanks, right now i will be running around 300-320hp to the wheels, the 450+ is about a year away, in the mean time i want my tranny to shift real hard, real fast.
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post #5 of 19 (permalink) Old 12-28-2004, 04:24 PM
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I hope you don't expect the stock converter to handle that.
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post #6 of 19 (permalink) Old 12-28-2004, 04:34 PM
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And then there will be the rearend issues. But since you have a Mustang the parts are easier to come by to correct those problems.

01 F150 5.4L 4x4 and a 98 Mustang GT vert sitting engineless and without transmission or converter


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post #7 of 19 (permalink) Old 12-28-2004, 04:42 PM
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Darrin, I almost forgot about the rearend troubles you are having. Thats alright we'll manhandle that thing by spring at least. I may have a hookup on a brand new set of 4.10's for you.

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post #8 of 19 (permalink) Old 12-28-2004, 05:00 PM Thread Starter
 
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I also have a diablosport predator tuner, would it be a bad idea to increase the line pressure with j-mod? Also, can you guys describe the different levels of the mod from mild to aggressive? I really want close to a race car feel when it shifts, but i don't want it to be undrivable in wet weather.
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post #9 of 19 (permalink) Old 12-28-2004, 06:53 PM
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Line pressure should only be increased at the shift point. If you increase line pressure at all times you will eventually destroy the transmission. As for the shifts, I have the mild J-mod and with 3.73 the tires do chirp even at 3500 rpm. I have never felt the 300+ jmod so I could not tell you what it feels like. In rainy weather I have to ***** foot the car, sinc first gear is absolutely useless and even when the 1-2 shift comes at low rpms it tends to kick the rear end out a bit.

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post #10 of 19 (permalink) Old 12-28-2004, 09:52 PM Thread Starter
 
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Anybody have the 300+ jmod?? is it streetable and what is your combo?
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post #11 of 19 (permalink) Old 12-28-2004, 11:09 PM
 
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Thumbs up yup

I've got the 300+ hp setting on my trans. I'm running a 351C V-8, and it's an 03 stang trans. At WOT I spin going into 2nd and 3rd. Shifts are F I R M. At light throttle, its firm, but not enough to knock your fillings out. Real streetable for my tastes anyways. I've got a Baumann TCS controlling the trans also. I'm VERY happy with the J-Mod/TCS combo.
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post #12 of 19 (permalink) Old 12-28-2004, 11:42 PM
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I have a 300+ J-mod and it's fine for the street. I also run a 2800stall 10inch converter and don't make very much power I get a sideways action on 1-2 at wot. it is a little too firm for most people ,but for cruising in the rain if you lift of the throttle for the shift you will be fine.
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post #13 of 19 (permalink) Old 12-29-2004, 05:49 AM
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I did an all out j-mod on mine and I have a 3800 stall converter. I can do rain, but with the wide tires and the stall, snow is absolutely impossible.

01 F150 5.4L 4x4 and a 98 Mustang GT vert sitting engineless and without transmission or converter


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post #14 of 19 (permalink) Old 12-29-2004, 07:36 AM
 
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I've got the harshest JMod you can do, along with a chip that bumps the line pressure during the shifts, and I drive mine daily with no problems. The converter really softens up the low rpm shifts around town also.
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post #15 of 19 (permalink) Old 12-29-2004, 07:57 AM Thread Starter
 
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Ok, from what i've read i am definately going with the most aggressive j-mod setup. Since i have a 2001 model 4r70w, which parts exactly am i going to need to do the mod? I was told i wouldn't need to update some parts like on older models. Part #'s would be great if applicable.
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post #16 of 19 (permalink) Old 12-29-2004, 09:47 AM
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Quote:
Originally Posted by 2fast4uGT
Ok, from what i've read i am definately going with the most aggressive j-mod setup. Since i have a 2001 model 4r70w, which parts exactly am i going to need to do the mod? I was told i wouldn't need to update some parts like on older models. Part #'s would be great if applicable.
Well, that depends. Are you going to tear down the transmission at this point and change out the planetary gearset and restack the clutches?

01 F150 5.4L 4x4 and a 98 Mustang GT vert sitting engineless and without transmission or converter


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post #17 of 19 (permalink) Old 12-29-2004, 10:14 AM
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Quote:
Originally Posted by PoweredBy351C
I've got a Baumann TCS controlling the trans also. I'm VERY happy with the J-Mod/TCS combo.

Wow, Someone else with one :=]

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post #18 of 19 (permalink) Old 12-30-2004, 12:23 AM
 
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Originally Posted by WkStill
Wow, Someone else with one :=]
So you've got the TCS also? How much have you played with the different inputs? I'm having a blast with it. I just talked with Greg today; I was asking him q's about the TC lock up adjustability, and any updates in the future. I've got no complaints. It's rather nice being able to tune as you go.
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post #19 of 19 (permalink) Old 12-30-2004, 09:53 AM
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Quote:
Originally Posted by PoweredBy351C
So you've got the TCS also? How much have you played with the different inputs? I'm having a blast with it. I just talked with Greg today; I was asking him q's about the TC lock up adjustability, and any updates in the future. I've got no complaints. It's rather nice being able to tune as you go.
Well, I have had it since Oct 2002 (with over 25K miles now) .. I do have two shifts setup, pos 1 is normal (lockup @ ~50) and 2 is no lockup, shifts are the same.

I dislike the TC Lockup setup, and LPC Options. (ie, it would be nice for a Increase LPC by x% on shift) Although, when karl designed it in 97' it was sufficent, but now, in 05' its not, from my understanding "Karl" is working on a new design.. But I have yet to been able to commincate with him, I have sent karl over 5 emails, and have yet to ever get a response from him, Greg on the other had is 1 top notch guy, and he doesn't even understand why karl won't reply back to any of my emails.

1984 Merc Cougar
5.0L, GT40X HEADS, E303 CAM,X303 Valvetrain
1998 4R70W Controlled by Baumannator TCS., 3.73 Track Lock Rear., Bauman Lev 3 Shift Kit.
190LPH, 67mm EGR, 65mm TB, 73mm C&L MAF, 24lb/h Inj, TwEECer RT, A3M EEC-IV
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