CUCV with a dana 70 rear???

[jason m]

did the CUCV's use the dana 70, i saw what could of been a civilain CUCV at the gas station and before i had a chance to ask the guy he left, but i did have a chance to look under the truck ( while he was paying ) and it was for sure a dana 70. i do know the differnce and yes somone could of put it there but it did'nt look like it swapped in. just wondering, jason.

 

[sandawgk5]

Down in Pcola on the NAS they had a few K30 dually CUCVs that would have had the Dana 70 in the rear. Those where the only 2 I had ever seen though.

Dik

 

[4WheelCowboy]

I bought a disc on eBay and here is some of what it has for the information on them. Hope it helps.

CUCV History And Facts.​

Around 1981, a prototype K5 Blazer was used as a test bed for a military CUCV vehicle. Between 1983 and 1986 (the production years), what is known as the M1009 CUCV was the production militarized version of the civilian K5. The only differences are the lack of an air conditioner and an additional leaf spring in the suspension. A majority of them are painted olive drab green (or in the black-brown-green camouflage pattern used by NATO forces if an M1009 was stationed in Western Europe) until its use in Operation Desert Storm where M1009s were painted desert tan. All M1009s, including its derivatives, are powered with the 6.2 L Diesel power plant.


The M1009s have a split 24/12 volt electrical system. Most of the truck actually runs on 12 volts. It has two separate 12 volt alternators and batteries wired in series, only the glow plug system, the starter, and the jumper cable jack are wired to the 24 volt terminals. Everything else in the truck runs on 12 volts. The glow plugs are actually 12 volt glow plugs, with a resistor pack on the fire wall to drop the 24v down to 12v. This resister pack can be bypassed and the glow plugs run directly off of the 12v battery. If this is done and the 24v starter is replaced with a standard 12v starter the second alternator and battery are no longer needed. (If this is done then the military 24v jump start plug in the grille should need to be disconnected as well)


1.) What was the first and last year for the K5?
The Chevy CUCV's were that I know of, available as 1984 through 1987 model years.

2.) What was the first and last year for the truck?
These are the *Chevy* CUCV trucks. There were also Dodge CUCV's in the late 70's -early 80's, the M880 clan. The Chevy CUCV's were that I know of, available as 1984 through 1987 model years.

3.) Did the K5 ever come with a D60/14 bolt?
No, The M1009's came with 10-bolts front and back, with 3.08:1 gears, six lug; the rears often or always came with a Gov-lock.

4.) Did the trucks ever come with 6 lug axles?
The M1009’s came with six lug

5.) Did the truck ever come with a 10 bolt front?
The M1009's came with 10-bolts front and back, with 3.08:1 gears, six lug; the rears often or always came with a Gov-lock.

6.) Did all 14 bolt FF axles have 4.56 gears and a Detroit Locker?
The others CUCV’s all came with D-60 and 14 bolt FF, 4.56:1 gears. My understanding is that the rears came with a Detroit and the fronts were open, except on the 1028's which (often) came with some sort of traction device (Auburn?)

7.) Do the 14 bolts use the 1 ton spring spacing?
The pickups (i.e., everything but the M1009) have one-ton spring spacing. The vast majorities were SRW; I’ve seen occasional duallies (M1028A3), they were rare and to my knowledge.

In short, if you want axles from a CUCV, you want to get them from a pickup CUCV, and ideally from a M1028.

Other details:
The engines are all the J-code intake 6.2L, with a TH400 and 208 transfer case. Electricals are 24V for the starter and glow plugs and 12V for the lights and other miscellany. All trucks except the M1010 had two alternators, one with floating ground, to charge the dual batteries in series.

In the M1010's (Ambulances) had a single 24V alternator because they had air conditioning (none of the others had this).


The use of the 205 had more to do with a PTO requirement in some government contracts. That is what I read in Military Vehicles magazine.
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CUCV is Uncle Sam's way of saying Commercial Utility Cargo Vehicle.
CARC stands for Chemical Agent Resistant Coating and it is some tough stuff. The trees don't scratch it, it scratches the trees.

Warning: CARC is some really nasty paint. You should wear a quality respirator (see the HAZMAT label) when sanding old CARC or if you get a hold of some, applying new CARC.


The CUCV was a military vehicle used by the US military starting in the mid-1980's. The majority of them have been phased out and replaced with Humvee's. Only a few remain in service today on reserve bases. They are basically full-size Chevrolet Blazers (M-1009) and pick-ups (M-1010, M-1008, etc...) that have some special equipment added for Uncle Sam. Some of the added goodies are:

· gun racks behind the driver's seat (M-1009 only)
· four lifting shackles bolted to reinforced frame-rails
· heavy-duty front brush-guard
· blackout lights in the bumpers
· pintle hitch in back
· Gov-loc locker in the rear differential of M1009's and the Detroit No-Spin locker in the 14-bolt of the pick-ups
· 24V 100 amp (200amp M1010) charging and starting system
· 6.2L GM Diesel with heavy-duty emissions package (slightly more power)
· NATO slave cable jump-start plug in the grill
· misc. other oddities (plugs, gauges, etc...)

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CUCV - Commercial Utility Cargo Vehicle
Configurations:
M1008 Truck, cargo, 1 1/4-ton, 4X4, NSN 2320-01-123-6827
M1008A1 Truck, cargo, communications kit, 100amp/24v, 1 1/4-ton, 4X4
M1009 Truck, utility, 3/4-ton, 4X4, NSN 2320-01-123-2665
M1010 Truck, ambulance, 1 1/4-ton, 4X4, NSN 2320-01-123-2666
M1028 Truck, shelter carrier, 1 1/4-ton, 4X4, NSN 2320-01-127-5077
M1028A1 Truck, shelter carrier, 1 1/4-ton, 4X4, PTO capability
M1028A2 Truck, shelter carrier, 1 1/4-ton, 4X4, PTO, dual rear wheels
M1028A3 Truck, shelter carrier, 1 1/4-ton, 4X4, dual rear wheels
M1031: Tactical Chassis, 1¼ ton
Length:
M1008/A1, M1028/A1: 220.7 inches
M1009: 191.8 inches
M1010: 227.7 inches
M1031: 212.9 inches
Width:
M1009: 79.6 inches
All Other Models: 81.2 inches
Weight (curb):
M1009/M1031: 5200 lbs
M1008/A1, M1028/A1: 5900 lbs
M1010: 7400 lbs
Height:
M1009, M1008/A1, M1031: 76 inches average.
M1010: 101.6 inches
M1028/A1: 107.1 inches

Engine: V8, 6.2L (379ci) displacement, fuel injected diesel, liquid cooled, compression ignition, nope, no turbo (I would slap on a Banks™)Horsepower: 135 at 3,600 RPM
Transmission:TH400, 3 speed, automatic
Transfer case: NP208, 2 speed, locking, chain driven, all models except M1028A1 and M1031 which have the NP205 gear-driven t-case
Axles: All models have Corp.14-bolt rear and Dana 60 front except M1009 which has Corp. 10-bolts front and rear
Differentials: All models have the 14-bolt Detroit No-Spin except the M1009 which has the 10-bolt Gov-Loc. The fronts on all models are open except for a rare lot that came out with the Dana 60 Trac Loc. All models came with 4.56 gear ratios except the M1009 that had 3.08 gears.
Electrical system: 12/24 volt, negative ground, 100 amps (200 amps M1010 ambulance)
Heating/Cooling: hot-water heat all models, AC only in M1010 ambulance
Brakes: Hydraulic, front discs, rear drums
Fuel type: Diesel
Fuel capacity:
M1009: 27 gal
All The Rest: 20 gal


Commercial Utility, Cargo Vehicle (CUCV)
The Commercial Utility, Cargo Vehicle (CUCV) reached its service life and was phased out of the Marine Corps’ inventory by FY 1997. CUCV vehicles are used primarily as cargo carriers. They were used for equipment and soldier transportation. The CUCV was basically a beefed up commercial truck made from 1984 to 1987 and used up until the late 90's. It was more economical to modify an existing civilian vehicle for limited tactical and non-tactical missions than to design a new system from the ground up.

The M1008 CUCV is designed to provide standard tactical mobility and to carry cargo or passengers. An M1008 can be equipped with a troop seat kit for the transportation of eight soldiers in the cargo area. The M1009 CUCV is designed to provide a mobile command and control vehicle for tactical purposes. It has an enclosed body and is otherwise similar to the M1008. The M1010 ambulance was part of the CUCV family of vehicles. The ambulance version could carry 4 stretcher patients or 8 walking wounded. It was air-conditioned and equipped with an air filtration system which would protect patients from chemical or biological weapons.

Built by Chevrolet, it is equipped with a 150 hp 379 cu. in.. engine and an automatic transmission. The engine of the CUCV trucks is similar to a V-8 gasoline engine. A combination of low pressure and high pressure fuel pumping systems move the fuel from the fuel tank to the engine. All CUCV trucks have an automatic transmission. The CUCV trucks are equipped with a model 208 transfer case. The transfer case transmits engine power to the front axle for four-wheel drive operation. The CUCV braking system uses hydraulically activated, power assisted front disk and rear drum service brakes. Fluid for the service brakes is contained in the master cylinder. The master cylinder operates through energy supplied by the power steering pump and the power brake booster.

 

[tarussell]

Down in Pcola on the NAS they had a few K30 dually CUCVs that would have had the Dana 70 in the rear. Those where the only 2 I had ever seen though.

Dik

I have seen a few Crew Cab Dually versions as well and they had the HD 70 put back. One had a 4-spd and the other had a TH400 in it - both were N/A diesel's and equiped with 205's . Both of these trucks were spotted in Pensacola as well . One was on N.A.S. and the other on Corry Field .

Tom