Ex military truck gears

[Redneck79]

I'm thinking to buy an 1985 ex military K30 6.2 liter diesel, but I know that military trucks have a modified transmission with different gears.
This one is an automatic 3 gears, do you think it's a boring drive and I should change the transmission ?

[hatzie]

The CUCV axle gears are 4.56:1
The CUCV TH400 has the same gearing as the Civilian version.

Will you be running it on the highways or locally?

[Redneck79]

I will run it mainly locally, I'm looking for something with a lot of torque for have fun, not for higways

[Redneck79]

Originally Posted by hatzie

The CUCV axle gears are 4.56:1
The CUCV TH400 has the same gearing as the Civilian version.

Will you be running it on the highways or locally?

I will run it mainly locally, I'm looking for something with a lot of torque for have fun, not for higways

[andrewmp6]

Its got a diesel turbo 400 and is a 4.56 gear ratio all oem gm parts.

[GM72K10]

Nothing special about the trans in a CUCV, all TH400s

[Alex V.]

A diesel with 4.56's sounds like just the ticket, then.

[Redneck79]

Originally Posted by Alex V.

A diesel with 4.56's sounds like just the ticket, then.

"Sound like just the ticket" ?
Sorry but I have not get
I'm from Italy and I don't understand all the slang

[Jeramy]

he means it will do exactly what you are looking for

[Redneck79]

Good, thanks for the infos

[Alex V.]

Originally Posted by Jeramy

he means it will do exactly what you are looking for

Sorry. What he said.

[Redneck79]

Originally Posted by Alex V.

Sorry. What he said.

No problem

[daddyjeep]

I didn't realize you were from Italy either. With your username and Avatar Would have never guessed. I didn't know there were rednecks in Italy.

[walkerb]

Originally Posted by daddyjeep

I didn't realize you were from Italy either. With your username and Avatar Would have never guessed. I didn't know there were rednecks in Italy.

I was also unaware!

[slotard]

With a 6.2, TH400, 4.56 you'll be at very high RPM on the highway (unless you have significantly larger tires than stock). It'll work well at low speed though.

[Redneck79]

Originally Posted by slotard

With a 6.2, TH400, 4.56 you'll be at very high RPM on the highway (unless you have significantly larger tires than stock). It'll work well at low speed though.

Yes, the tires are larger than stock, 36 BF Goodrich All Terrain, I show you some photos.
I was also wondering to put dually wheels on the truck, (I'm a dually fetishist) what do you think about ?
I could have problems to the rear axle ?

[KShortell]

Great looking truck!

As an aside, my dad was project manager for the CUCVs back in the 1980s at the U.S. Army Tank-Automotive Command (TACOM). They had some early teething problems, but worked out the kinks early on. They're solid trucks. After all, they're Chevys!

[Redneck79]

Originally Posted by KShortell

Great looking truck!

As an aside, my dad was project manager for the CUCVs back in the 1980s at the U.S. Army Tank-Automotive Command (TACOM). They had some early teething problems, but worked out the kinks early on. They're solid trucks. After all, they're Chevys!

Thanks
I want to add spike lug nuts, do you can suggest me a link where I can buy the right ones for the truck ?

[Hiluxxulih]

Originally Posted by KShortell

Great looking truck!

As an aside, my dad was project manager for the CUCVs back in the 1980s at the U.S. Army Tank-Automotive Command (TACOM). They had some early teething problems, but worked out the kinks early on. They're solid trucks. After all, they're Chevys!

What were the teething problems ?

[75gmck25]

My unit received our first CUCVs in about 1984 and from what I recall there were some early problems with the glow plugs or injectors on the diesel engine.

We were in the field using the trucks and had to keep swapping them out so that each one could be taken to the dealer for the GM fix. The fix apparently was not complicated, because it only took one day in the shop. However, most of the drivers thought it was fine to get out of the field and get paid for relaxing at the GM dealer waiting for the truck to be ready.

We then took them on an exercise to Korea in March 1985 and they were very reliable. It was great to have a heater in every vehicle, since the old jeeps (that the Blazer CUCV replaced) usually did not have a heater and we had to completely remove the tops in the field. I did notice a big difference in gearing from the pickup version (4.56 gears) to the Blazer version (not sure of gears), which made highway travel a lot quieter in the Blazer.

Bruce

[slotard]

I imagine you'd need a flatbed in order to fit dually 36s. The internals of the rear axle are the same for 3/4 ton, 1 ton SRW, 1 ton DRW, and CUCV truck (which I think is just a 1 ton SRW). However, the DRW axle is wider. I'm not sure if you could fit dually rears with the axle you have, seems unlikely with the tire size you have. Additionally, the front setup is wider... I'm not sure whether it's the center section or just the hubs on squares, I know modern trucks it's the center section but someone said it was just the hubs on squares.

[hatzie]

Some M1028 and M1031 CUCV can be found with dual wheels. It was a motor pool add on kit for the M1028 & M1031 making it an M1028-a2.
http://67-72chevytrucks.com/vboard/s...d.php?t=546148

[GM72K10]

Dually CUCVs
M1028a2 NP205 converted M1031 or M1028a1
M1028a3 NP208 converted M1028

[Redneck79]

Originally Posted by GM72K10

Dually CUCVs
M1028a2 NP205 converted M1031 or M1028a1
M1028a3 NP208 converted M1028

I found this info about CUCV axles by models, do you think are correct ?

M1009
10 bolt axles front and rear with 3.08 gears and a Gov-Loc in the rear (Not Dana 60 front and 14 bolt rear like some believe)
All other CUCV’s
Dana 60 front
Front Capacity 4.5 Quarts
14 Bolt FF rear with Detroit locker and 4.56 gears (some have a true-track locker in the front as well, but it is rare)
Rear Capacity 5.4 Quarts
M1028 needs GM additive

[hatzie]

Originally Posted by Redneck79

I found this info about CUCV axles by models, do you think are correct ?

M1009
10 bolt axles front and rear with 3.08 gears and a Gov-Loc in the rear (Not Dana 60 front and 14 bolt rear like some believe)
All other CUCV’s
Dana 60 front
Front Capacity 4.5 Quarts
14 Bolt FF rear with Detroit locker and 4.56 gears (some have a true-track locker in the front as well, but it is rare)
Rear Capacity 5.4 Quarts
M1028 needs GM additive

The M1009 is the K series Blazer with 10 bolt axles.
Axle capacity is in PINTS not quarts...

The M1028A2 and A3 should have the transfer case of the vehicle it was converted from. M1028 dually conversions should still have the NP208 transfer case M1031 dually conversions should have the NP205.

The CUCV WIKI on the Steel Soldiers forum. http://www.steelsoldiers.com/showthr...7427-Cucv-Wiki