6 spd Conversion
6 spd Conversion
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Joined: Apr 2002
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From: Waddell, AZ
depends on what all you got, if you already have a trans. Adapting to the cross member is the biggest issue. other obvious stuff, d-shafts need to be adjusted. Maybe explain what you have available, so we can tell you what else you will need. It isn't a cheap conversion, but if you already have a manual, your most of the way there.
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Joined: Feb 2005
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From: Browns Valley CA
I put a 6speed from a 2002 into my 92. Not a problem. Made a cross member and had to modify the 29 spline coupler, drive shaft mods and a new clutch and slave. That's about it. The hole in the floor needs a bit of work, and if it's 4 wheel drive, you'll have to make a new mount for the transfer case linkage. I recently swapped to an auto so i can't take pictures.
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Here is pic of my 93 with nv5600 installed, you dont need to modify anything on a 4x4 crossmember, if you look close you can see the 3/16" piece of flat stock sticking out of the corner at the left side of the cross member. Go to dodge and order the six speed bracket and insulator drill 4 holes in the flatstock and your in. You will need to drill the mountin holes in the bottom and top frame rails, the crossmember will sit back farther, the top holes for the knee braces are the most fun. you will need a later model flywheel housing, and the later styles starter, got mine on ebay for a little over a c note, good place to get the adapter also. second pic shows the top frame where I heated it up and bent the inside lip up some maybe 3/8s to 1/2 " its very close unmodified. You can also see the 1/2" spacer between the adapter and the starter, the spacer is only nescessary if you use the true 13" flywheel that came with the 6 speeds.
http://www.pbase.com/txs/image/70523842 2nd pic looking up from under truck http://www.pbase.com/txs/image/70524171 3rd pic is top view of bracket i made and the shifter for the t case http://www.pbase.com/txs/image/70524065
the floorboard hump in the cab was chopped out by PO to facilitate the top cover removal of the getrag, dont do this. you do have to make a new hole about 5 or 6" farther back for the shifter.
http://www.pbase.com/txs/image/70523842 2nd pic looking up from under truck http://www.pbase.com/txs/image/70524171 3rd pic is top view of bracket i made and the shifter for the t case http://www.pbase.com/txs/image/70524065
the floorboard hump in the cab was chopped out by PO to facilitate the top cover removal of the getrag, dont do this. you do have to make a new hole about 5 or 6" farther back for the shifter.
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Registered User
Joined: Dec 2007
Posts: 1,341
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From: Richmond, MI
I put a 6speed from a 2002 into my 92. Not a problem. Made a cross member and had to modify the 29 spline coupler, drive shaft mods and a new clutch and slave. That's about it. The hole in the floor needs a bit of work, and if it's 4 wheel drive, you'll have to make a new mount for the transfer case linkage. I recently swapped to an auto so i can't take pictures.
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Joined: Feb 2005
Posts: 763
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From: Browns Valley CA
The auto is fairly user friendly. Just a lock up switch and an overdrive button. Very easy to stay up with the flow of traffic in town. Total waste for towing. I loved the 6 speed and the mileage I got. Lost a bit with the auto, but I have been having some knee problems and it was either an air operated clutch or an auto.
Ron
Ron
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Joined: Aug 2007
Posts: 115
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From: north centeral idaho
you may need the fly wheel adapter plate clutch starter and belhousing for the six speed but advanced adapters may have an adapter belhousing for this aplication then all you wil need is the trans and what ever it takes to hook up the t case.other than that if you have some fabrication skills or friends that do and acsess to the equipment and some machinest skills you have it made.one last thing use locktite on anything you dont want coming apart use red on the flywheel bolts an blue on prety much evry thing else.
good luck and enjoy.
good luck and enjoy.
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Joined: Mar 2005
Posts: 1,167
Likes: 2
From: SW Pennsylvania - Greene County
I looked at doing the six speed conversion but opted for the NV4500 instead.
My reasons at that time were:
1. Initial cost of the six speed over the NV4500 was close to $1,000.
2. Drive shaft fabrication was going to be over $750 for lengthening & shortening both drive shafts locally.
3. Availability of repair parts for a transmission no longer being manufactured.
4. How I use my truck, primarily as a grocery getter, no real need for an extra gear.
Yes, at times in rare traffic situations I could use the extra gearing but I always manage to get by without any difficulty. In my opinion it just wasn't worth spending almost an additional $2,000 to have it.
My reasons at that time were:
1. Initial cost of the six speed over the NV4500 was close to $1,000.
2. Drive shaft fabrication was going to be over $750 for lengthening & shortening both drive shafts locally.
3. Availability of repair parts for a transmission no longer being manufactured.
4. How I use my truck, primarily as a grocery getter, no real need for an extra gear.
Yes, at times in rare traffic situations I could use the extra gearing but I always manage to get by without any difficulty. In my opinion it just wasn't worth spending almost an additional $2,000 to have it.
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Joined: Apr 2002
Posts: 685
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From: Waddell, AZ
RonA, sounds like you need a more optimal TC. The autos can tow fairly nice, but 6 forwards are better than 4.
The bellhousing from the 6speed is integrated into the trans, no swapping available.
He's getting the trans for nothing, it sounds like, so the only concern would be if/when he might need to have it rebuilt, it does cost almost 3x as much as the 4500.
$750 for driveshafts? Yikes, there are less expensive places out there. I picked up a new front for my 93 for under $250, new CV, shaft, new longer clearanced slip yoke included, since my old one was shot, and I had lifted the truck too.
The bellhousing from the 6speed is integrated into the trans, no swapping available.
He's getting the trans for nothing, it sounds like, so the only concern would be if/when he might need to have it rebuilt, it does cost almost 3x as much as the 4500.
$750 for driveshafts? Yikes, there are less expensive places out there. I picked up a new front for my 93 for under $250, new CV, shaft, new longer clearanced slip yoke included, since my old one was shot, and I had lifted the truck too.