M1008 overdrive ?

[100acre]

I'm thinking I may want to install an overdrive transmission in my CUCV . Any suggestions? Does that change the gearing ratio too? I like 456 but I also like to drive faster on the highways. Any help much appreciated. Tanks

 

[Warthog]

You can go with the 700r4 (which requires the hard to find throttle valve bracket) or the 4L80E trans mission that requires the $1000 controller. Both have been documented on the site.

or you can go manual.

 

[truck1]

Or you can go Gear Vendor. 2800$ new. Easy install. Must shorten and balance drive shaft. I love mine. 20,000 miles , 0 problems.

 

[Iceman3005]

do the 700r4 swap, I have done several of these.

 

[kabar1]

I know someone who has the adapter in farmer T.N.

 

[rmauto1]

I have a 1008 and was thinking about a 4l80e. The controller is only 600, another 80.00 for the rpm conversion box, and around 350.00 for new driveshafts. My math shows 2100 rpm at 60 mph with stock tires. Nice thing is that it is very heavy duty. The 700R4 is just an over glorified car transmission. Just my .02.

 

[Recovry4x4]

I have a 1008 and was thinking about a 4l80e. The controller is only 600, another 80.00 for the rpm conversion box, and around 350.00 for new driveshafts. My math shows 2100 rpm at 60 mph with stock tires. Nice thing is that it is very heavy duty. The 700R4 is just an over glorified car transmission. Just my .02.

A decently built 700 can handle anything a 6.2 can throw at it and so much more. 3.06 first gear and .70 overdrive make the 700 and the CUCV a match made in heaven.

 

[Iceman3005]

I have a stock used 700r4 transmission that I put into mine about 2 years ago, haven't had any issues. All my customers cucv trucks that I have done have stock 700r4's without any issues! If you do the swap yourself probably can get it done for less than $700, I charge between $1200-$1500 to my customers for this swap.

 

[100acre]

I have a stock used 700r4 transmission that I put into mine about 2 years ago, haven't had any issues. All my customers cucv trucks that I have done have stock 700r4's without any issues! If you do the swap yourself probably can get it done for less than $700, I charge between $1200-$1500 to my customers for this swap.

Wish you were closer....

 

[acesneights1]

Put an NV4500 in. Trust me. You'll love the truck afterwards. 700's are weak and a 4l80e requires electronics which negates the simplicity of our trucks. No way no how will a 700r4 even shine the shoes of an NV4500. It's a relatively easy swap. I have a detailed thread on it. Just use a 96+ NV4500. That was my only mistake. The bolt pattern on the tranny allows for a future Cummins swap.

 

[100acre]

Put an NV4500 in. Trust me. You'll love the truck afterwards. 700's are weak and a 4l80e requires electronics which negates the simplicity of our trucks. No way no how will a 700r4 even shine the shoes of an NV4500. It's a relatively easy swap. I have a detailed thread on it. Just use a 96+ NV4500. That was my only mistake. The bolt pattern on the tranny allows for a future Cummins swap.

Sorry but what about it was a mistake? And how much did it set you back? Tanks

 

[acesneights1]

Sorry but what about it was a mistake? And how much did it set you back? Tanks

I used a GM NV4500 from a 93 K3500. The bolt pattern from the trans to Bellhousing(not bellhousing to motor) from 92-95 is proprietary to GM. IN 96 GM used the same bolt pattern as Dodge so a 96+ NV4500 will bolt right up to a Cummins/dodge bellhousing. My 93 will not. The reason I had went with the 93 was lower 1st gear and external slave but in hindsight now it would be a major PIA to swap in a Cummins which is what I will do when this 6.2 eventually hand grenades.
If you never plan on a Cummins swap it doesn't matter which one you use.

 

[Nathanater]

I used a GM NV4500 from a 93 K3500. The bolt pattern from the trans to Bellhousing(not bellhousing to motor) from 92-95 is proprietary to GM. IN 96 GM used the same bolt pattern as Dodge so a 96+ NV4500 will bolt right up to a Cummins/dodge bellhousing. My 93 will not. The reason I had went with the 93 was lower 1st gear and external slave but in hindsight now it would be a major PIA to swap in a Cummins which is what I will do when this 6.2 eventually hand grenades.
If you never plan on a Cummins swap it doesn't matter which one you use.

What automatic trans would you recommend for the 6.2 with a future cummins swap planned for later?

I know a guy that wants my TH400 and he said he has a 700R4 or a 4L60(I think he said it's a 60 but could be a 4L80, I'll have to check). It'd be a straight swap and I'd have to find a controller if I went with the electric controlled trans.

 

[Warthog]

Not an easy match up for the Cummins engine and GM auto transmission. You will need a $1000+ adapter. They can be found on old Frito's trucks and now some vendors are selling them.

I would not go the 4L60E route. If you are spending all the money on a controller use the 4L80E.

 

[Nathanater]

Not an easy match up for the Cummins engine and GM auto transmission. You will need a $1000+ adapter. They can be found on old Frito's trucks and now some vendors are selling them.

I would not go the 4L60E route. If you are spending all the money on a controller use the 4L80E.

I read that the 4L60 is just a renamed 700R4. Other than the controller, what's the difference?

 

[cliffyp]

700r4 is not electronic controlled. Somewhere around '93 they changed the name to 4L60e, "e" for electronic controlled. 700r4 is an easy swap and there were tons of them behind 6.2's from the factory, it will handle a 6.2. If you go the electronic route a get a stand alone controller, then get a 4L80e. There is just no reason to go 4L60e.

 

[hovenga67]

4l60e is electronically controlled. The 4l60 is mechanically controlled like a 700r4 but I believe has changes internally. If I was doing a Cummins swap later I would run the 4l80e. They are strong stock and can be beefed up more.
Brent

 

[Howlin Mad Murdock]

Just to confirm, the 700r4 will do perfectly fine strength wise. My grandpa has an 83 C20 and it has the 700r4 and it survived being a heavy duty farm truck and more and it is still going good. Another thing is that even with the stock 6.2 in the truck and I believe 4.10 gears in the back, the truck could go 75-80 mph with a full size and loaded camper in the back and still get 15 mpg. Empty, the thing will get 18 mpg or more most likely thanks to the gear ratios and the overdrive. Hope this helps you huphalump!

 

[doghead]

Pretty sure he sold the truck and never did this project.

 

[Nathanater]

Pretty sure he sold the truck and never did this project.

But I'm looking at doing it. Unless I find a donor truck.