08 w/ 4l80e & 255/85R 16 build

1StumpJumper · Mar 3, 2012

So I have an M1008.

I posted an intro thread where I contemplated parting the 08. My vehicle situation has changed, so now I can put energy & resources in this rig. I am starting this thread to be more on topic. This will be the start of my M1008 build.

Here is the build plan somewhat in order.

Receive SF97 (waiting...), get title & collector vehicle tags
Upgrade/repair glow plugs
Doghead starter relay mod
Repair kingpins
Put 255/86R 16" tires on
Swap damaged body panels
Install 4L80E
Possible 203/205 doubler (no justifiable reason just a toy)
Spiff up / repair the interior
Paint

What I have so far
1 EA Stock M1008 needing some love
New HMMWV 4L80E (thanks GL)
Optishift controller & harness
Used set of 255/85R 16" tires
Suburban donor.
10 Spline figure 8 NP205

Any thoughts, experience & or opinions?

bshupe · Mar 3, 2012

Im picking up a 1031 today so I will be following in your wake as I am able. You're my closest SS contact so lets keep in touch!

Im planning to do the O/D trans swap also so I will be interested to see how that goes.

1StumpJumper · Mar 3, 2012

Congratulations on the new aquisition :beer:

We will definately have to keep in touch.

I will PM you my contact info.

Maybe we can do an unofficial ultra mini rally :driver:

bshupe · Mar 3, 2012

Im in. Hopefully there might be some (closet) SS members or trolls who live in our area as well and will be interested in getting some stuff going up here. I am working on making contact with a guy in Anacortes who supposedly has a very extensive MV collection. Im not sure he comes out to play very often but I hear he does parades and stuff sometimes.

Im looking forward to hearing the rumble echoing off the cliffs on Chuckanut Dr.

Ill PM you back with my contact info too.

1StumpJumper · Mar 3, 2012

MMMM Chuckanut Dr........

I could see if I could drum up some folks too.

1ton cucv k5 turbo · Mar 3, 2012

Do you already have the 4L80E? reason being, as it is a strong transmission, but becasue its all electronically controlled. it will need a stand alone computer to shift correctly. and those arent cheap. it may be not cost effective for you. to get that fourth gear, you maywant to look at a 700r4 or keeping the 400 and adding a gearvendor overdrive..

do a search on here regarding the 4L80E as well as the Gearvendor drive, as theres alot info on this topic...

as for the 203/205 doubler... I have one in a M1009 and love it... :driver:

1StumpJumper · Mar 3, 2012

Yes I do have the 4L80E and a stand alone controller that I had on standby for the right project.

Thanks 1ton for the input on the doubler. Who did you go with on the adapter?

1ton cucv k5 turbo · Mar 3, 2012

Good deal on already having the 4L80E...

I went with Off Road Designs, here is link to my build thread..
http://www.steelsoldiers.com/cucv/83044-85-m1009-build-thread.html

1StumpJumper · Mar 3, 2012

Nice looking rig!

You are making me feel bad, I might have to put "spray painting the door" at the top of the to do list just so I can look at it.

Blue2actual · Mar 3, 2012

Not sure if I would be able to help, but I've got the 4L80E in my rig behind the HMMWV 6.5TD. I might be able to help answer some questions if need be.

1StumpJumper · Mar 3, 2012

What did you do for the crossmember? What t-case did you go with?

Blue2actual · Mar 3, 2012

Mine has the 205. It's a re-built gear drive w/2 stick controls. Pretty much any crossmember will work from a 1985-1991 1 ton model with np 205 case.

1StumpJumper · Mar 3, 2012

Blue2actual said:
Mine has the 205. It's a re-built gear drive w/2 stick controls. Pretty much any crossmember will work from a 1985-1991 1 ton model with np 205 case.

Good to know, thanks.

1ton cucv k5 turbo · Mar 3, 2012

When i switched from NP208 to my 203/205 i reused old crossmember and added a 2nd from a junkyard...

Cucvnut · Mar 3, 2012

the cross member you have now till work with a 205. also all 205's are gear driven. you just lose the low of a 208 when you go to just a 205 thats why people run doublers. I plan to run a 241 range box with a 205

True Knight · Mar 3, 2012

1StumpJumper said:
What did you do for the crossmember? What t-case did you go with?

I am very happy to have a strong 4L80E transmission in my truck. Here is my write-up:

http://www.steelsoldiers.com/cucv/64004-mythical-cucv-4l80e-swap.html#post759424

bshupe · Mar 4, 2012

Cucvnut said:
the cross member you have now till work with a 205. also all 205's are gear driven. you just lose the low of a 208 when you go to just a 205 thats why people run doublers. I plan to run a 241 range box with a 205

So are you saying that the 205 has no 4 low? I hadnt heard that before.

bshupe · Mar 4, 2012

1StumpJumper said:
MMMM Chuckanut Dr........

I could see if I could drum up some folks too.

I think the only trouble would be if you drummed up some folks with a Deuce or bigger. I dont think they would want to drive on Chuckanut. lol Might not even fit some spots.

Cucvnut · Mar 4, 2012

bshupe said:
So are you saying that the 205 has no 4 low? I hadnt heard that before.

No a 205's low gear is 2:01
A np208's low gear is 2.67:01
A np 241 which i have in my truck has a low range of 2.72:1

which case has a better low gear?

The 205 is a great T case its weakness is its low gear. that's why people build doublers for them

ODdave · Mar 4, 2012

Not that its a big deal but 205 is 1.96-1

How do you plan on using the reduction from a 241 for a doubler?

08 w/ 4l80e & 255/85R 16 build

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