X trannies

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Jan 6, 2004 | 10:05 PM

89elite

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X trannies

Hello All

Guess nobody liked my other post so I'll try a different question. Is the 4R100 in the 2k- 03 X better then it was in the late 90's as far as reliability? Or should I look at the newer 03/04 5Speed auto for the X ? My normal towing weight is ~9-10k #'s. Not too concerned about fuel economy but reliability in the middle of nowhere.

Thanks

97 F350 psd 5spd 4wd
00 expy 5.4 4wd
89 elite MH 28" 460fi

Jan 7, 2004 | 07:53 AM

dm12578

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From: Bridgewater, NJ

The newest tranny the TorqueShift will not bolt up to the engine you have. Although nice to have a 5 speed the electronics are as well different.

In order to get into a "newer" tranny (4R100) as well the electronics are different. You might need a new ECM to control the engine and tranny.

Check with you loacl dealer on engine code (drivers side above door hinge) and what type of tranny to use.

Don

Jan 7, 2004 | 09:16 AM

89elite

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Sorry about that I meant I'm going to buy a used excursion and was wondering which tranny is better for towing. I know the Torqueshift is a new tranny but supposedly I heard they put them in passenger transport vans along with the 6L for a few years before they put them in the 03 excursions/pickups. But if I get a 2k - 03 7.3L with the 4R100 arent those trannies a little better then they were in the 90's trucks ?
I'm getting rid of the expy and upgrading to the 16" longer excursion.

Thanks
Sam

00 expy 5.4L 4wd
97 F350 PSD 5spd 4wd
89 Elite 28' MH FI460

Jan 7, 2004 | 10:41 AM

jschira

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Joined: Nov 2002

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From: Mansfield, TX USA

Ford has made continual improvements to the 4R100.

An '03 4R100 will be better than a '99 4R100 because Ford replacement some of the more breakable parts with more durable pieces.

Look at the comparable pieces here:

www.brianstruckshop.com

Jan 7, 2004 | 10:42 AM

dm12578

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From: Bridgewater, NJ

Okay, There really is a toss up between the both. You can only get the 4R100 on the 7.3L and the TorqueShift 5R110 on the 6.0L.

The upside on 7.3L 4R100 is a long term following. Yes the 5R110 has been around for a couple of years but has not had the true test of time say 150K miles of customer driven stress. Down right the 5R110 is a better tranny in theory but time will tell.

The other downside is the 6.0L and the inherant problems they are having with the engine; Blown Turbo's, injector failures, rear main seals leaking to name a few issues.

7.3L 250hp @ 525 ft lbs
6.0L 325hp @ 625 ft lbs

The 6.0L numbers aren't shabby, but I like to put my money in a sure thing. A couple of modifications and your number on 7.3L is close to the numbers of the 6.0L.

Don

Jan 7, 2004 | 10:45 AM

dm12578

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Posts: 38

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From: Bridgewater, NJ

Quote:

Originally posted by jschira
Ford has made continual improvements to the 4R100.

An '03 4R100 will be better than a '99 4R100 because Ford replacement some of the more breakable parts with more durable pieces.

Look at the comparable pieces here:

www.brianstruckshop.com

jschira,

You are right, although in 99' the tranny was the E40D... Let me clarify. The 4R100 is a E40D.

Don

Jan 7, 2004 | 10:51 AM

dm12578

Freshman User

Joined: Jan 2004

Posts: 38

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From: Bridgewater, NJ

Not for nothing, but I have burned my torque converter in my 4R100 already with 27K. I play hard on my truck.

Ford is replacing it under warrenty by me pleeding with them and making some friends at the local dealership.

What they are putting in is the converter for the 5R110 transmission.

Lower stall speed @ 1200rpm and capable of handling 450+hp.