Transmission Swap! - Diesel Truck Forum - TheDieselGarage.com
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post #1 of 9 (permalink) Old 06-26-2009, 09:01 PM Thread Starter
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Transmission Swap!

Hi Everyone! I'd appreciate any info on swapping out the manual trans for an automatic on a 99.5 F350 2wd dually.

I'd like to know this:
Can it be done relatively cost effective?
Is there a kit? Who makes it?
What is the best auto tranny to hook up to it?

The truck is a hauler and a hauler only. I consistently haul loads multiple times per week somewhere around 12k lbs.

I want the auto because most of it is spent in chicago traffic.

ANY info on this subject would be greatly appreciated. don't feel like you've got to limit it to just the questions above
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post #2 of 9 (permalink) Old 06-26-2009, 09:15 PM
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too bad you dont live closer.... i would swap with you... thats the easiest, swap from truck to truck right next to each other....
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post #3 of 9 (permalink) Old 06-26-2009, 09:17 PM Thread Starter
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haha, that'd be a heck of a road trip!
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post #4 of 9 (permalink) Old 06-28-2009, 04:05 PM
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A new clutch is cheap and easy compared to overhauling an A/T, and you'll get better fuel mileage (and longer life expectancy) with the standard trans.

The swap is not worth the time or expense.

Woody

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post #5 of 9 (permalink) Old 06-28-2009, 07:10 PM Thread Starter
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I appreciate the response, Woody. Which leads me to my next question...what's a good clutch? I have just a stock clutch, and when I'm getting a heavy load going, I get some major jerking while the clutch is engaging. Also, is there a good aftermarket manual trans to use? this one has 160k on it, and shifting from the granny gear to 1st is pretty much impossible while rolling.

Sorry for all of the questions!~
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post #6 of 9 (permalink) Old 06-28-2009, 08:09 PM
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Talk is cheap, labor is expensive!!! Not a problem.

I bought a Southbend clutch for my truck. I talked directly with the manufacturer, and he recommended the most appropriate model for my situation. i.e. mods, weight of trailer, etc. 1-800-988-4345

The clutch holds great, and pulls my 10,000 lb camper without a problem. It is a bit noisier at low RPM, but that is a sacrifice I'm willing to live with.

It sounds to me that you likely have a bad synchronizer in 1st gear. A new synchro is cheap, but the labor to have it installed isn't. While the trans is out for a new clutch, you would probably be wise to have all the gears and synchros looked at by a trans shop.

The first gear synchro is usually the first one to go. If you want to make the next one last longer, you'll have to change your driving style a bit. (Sometimes this is very difficult. The old phrase, "Can't teach an old dog new tricks" is very appropriate here.)

Other than a short throw shifter, I don't know of anybody that makes upgraded aftermarket manual transmissions or parts. I was of the understanding that the factory manual trans was capable of more than 700,000 miles behind engines making upwards of 500 HP. (I don't remember where I heard this, so don't quote me.)

Good luck,

Woody

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post #7 of 9 (permalink) Old 07-21-2009, 02:27 PM Thread Starter
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haha, it wasn't my driving style, it was the guy before me....I'm not the first owner of the truck.

Which leads me to my next question: I have a granny gear and 5 more forward years...is that considered a six speed or a five speed?
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post #8 of 9 (permalink) Old 07-21-2009, 05:46 PM
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6spd... 99 up are 6spds, early 90's somewhere-97 is the 5spd... both ZF trannys though
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post #9 of 9 (permalink) Old 07-21-2009, 06:59 PM
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Dan at midwest transmissions makes an upgraded ZF6. He is a vendor here and does by SoGrand on the boards. He is a great guy to deal with and will fix you up right. Your other option is to sell your manual, as there are many people looking for the truck that you have. Then take that money and buy an automatic..

early '99 converted to late '99 F-350 dually, 4x4, 4 door, long bed, 6 speed. Midwest transmissions 05+ zf-6 transmission with their short throw shifter and SB clutch. Rosewood 180cc with 80% nozzles, Termy modded 17* HPOP, International bellowed up pipes, fs-2500, DP Tunes. A few other things here and there...
dually club member.. Why replace 5 tires when you can replace seven? I like my training wheels...
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