Yes it was the 6.2 400 208 4,56 and I got about 17 MPG.
That is what I get from my 85 K-20 now too.
The 76 is getting about 23 MPG
That is what I get from my 85 K-20 now too.
The 76 is getting about 23 MPG
CK5
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M1008 cucv
- Thread starter 79bonanza
- Start date
79bonanza
1/2 ton status
dang 17 mpg's thats better than my 95 silverado it only got 15 on the highway cruising in OD at 2000 RPM, what do you think those trucks would average with 33X12.50 and like 3 inches of lift
I think between 15-17 MPG because on my 85 K-20 there is 33" 12.5 16.5 no lift.
I don't know what gears in that one though but a fair guess would be 4,10
I don't know what gears in that one though but a fair guess would be 4,10
79bonanza
1/2 ton status
really thats all i thought these 6.2 were suppose to get 20 plus mpg's stock
gotblazers
1/2 ton status
Car companies always say that there cars get better mpg than they really do. I wouldnt count on more than 16-20 mpg avg which is what my 2000 jeep grand cherokee gets so getting that in a fullsize is damn good IMO. Im used to 8mpg or less right now.
79bonanza
1/2 ton status
yea my wheelin truck did terible on gas but it was a stock 350 with a 770 cfm carb someone put on it haha, well i guess 20 mpg on a 24 year old 1 1/4 ton truck is pretty fricken awsome
quinryan
Registered Member
Go for the CUCV
Like all the other 6.2-eqipped C/K trucks, speed is a matter of perspective. But they'll get you there, just a little bit after everybody else parked.
However, the 6.2 rigs have a lot of advantages. Nothing comes to mind at the moment, but I bought my 82 GMC for some reason.
Actually, the mileage is better than any comparable gasser. These days, that's kind of important (war for cheap oil my a$$). Water is a totally non-issue, as you don't have an ignition to short out (do keep the H2O out of your intakes, though. It's important).
Spark plugs X8 isn't that expensive, but you don't ever have to buy them, SP wires, a new cap and so on. Glow plugs last a long time, the wires rarely need to be replaced, and, of course, there's no distributor to worry about.
You can tow up to to max rating and it really doesn't move any more slowly than it would without one.
Tailgaters are easily persuaded to back off with a diesel.
And that sound! OMG that sound. My wife calls it hammers on on out-of-tune anvil. I love it. Few things on Earth make a sound as aggresive-at IDLE- than a diesel.
Even better with the CUCVs is that the Army, knowing that troops don't care about what they don't own (Chill, I served 15 years), worked with GM to ensure that CUCVs would be hard(er) to break than civilian rigs. True, they're not a HMMWV or an (Olds be praised) deuce-and-a-half when it comes to rough handling, but they aren't an Isuzu, either.
The ONLY things that may cause you probs with a CUCV are the alleged limited slip axle in the back (which was also available to civilian C/Ks) and the 24 volt electrical system. At that, the only prob that you're going to have with the electrics is that it is incompatable with any electric accessory that you may want to put in there. I understand that it's easy to convert 24 volts to 12.
Yeah, it's an all-vinyl interior and has dummy lights instead of proper gauges. Vinyl has its plusses, especially if your CUCV will be a work/camp/hunting truck. A little sticky in summer, but life is suffering, right?
And the dummy lights are easily replaced with something good from Sun or Stewart-Warner or who the heck else.
Lastly, the CARC paint (Chemical Agent Resistant Coating) that was applied to CUCVs is vastly more durable than ANYTHING GM ever thought of using, including the $50K a gallon UV-resistent stuff that they use on 'Vettes. A CUCV is a lot less likely to rust, anywhere, than a civvy C/K.
The "factory" grille-guard is kinda cool, too.
Like all the other 6.2-eqipped C/K trucks, speed is a matter of perspective. But they'll get you there, just a little bit after everybody else parked.
However, the 6.2 rigs have a lot of advantages. Nothing comes to mind at the moment, but I bought my 82 GMC for some reason.
Actually, the mileage is better than any comparable gasser. These days, that's kind of important (war for cheap oil my a$$). Water is a totally non-issue, as you don't have an ignition to short out (do keep the H2O out of your intakes, though. It's important).
Spark plugs X8 isn't that expensive, but you don't ever have to buy them, SP wires, a new cap and so on. Glow plugs last a long time, the wires rarely need to be replaced, and, of course, there's no distributor to worry about.
You can tow up to to max rating and it really doesn't move any more slowly than it would without one.
Tailgaters are easily persuaded to back off with a diesel.
And that sound! OMG that sound. My wife calls it hammers on on out-of-tune anvil. I love it. Few things on Earth make a sound as aggresive-at IDLE- than a diesel.
Even better with the CUCVs is that the Army, knowing that troops don't care about what they don't own (Chill, I served 15 years), worked with GM to ensure that CUCVs would be hard(er) to break than civilian rigs. True, they're not a HMMWV or an (Olds be praised) deuce-and-a-half when it comes to rough handling, but they aren't an Isuzu, either.
The ONLY things that may cause you probs with a CUCV are the alleged limited slip axle in the back (which was also available to civilian C/Ks) and the 24 volt electrical system. At that, the only prob that you're going to have with the electrics is that it is incompatable with any electric accessory that you may want to put in there. I understand that it's easy to convert 24 volts to 12.
Yeah, it's an all-vinyl interior and has dummy lights instead of proper gauges. Vinyl has its plusses, especially if your CUCV will be a work/camp/hunting truck. A little sticky in summer, but life is suffering, right?
And the dummy lights are easily replaced with something good from Sun or Stewart-Warner or who the heck else.
Lastly, the CARC paint (Chemical Agent Resistant Coating) that was applied to CUCVs is vastly more durable than ANYTHING GM ever thought of using, including the $50K a gallon UV-resistent stuff that they use on 'Vettes. A CUCV is a lot less likely to rust, anywhere, than a civvy C/K.
The "factory" grille-guard is kinda cool, too.
79bonanza
1/2 ton status
well do you guys think that a m1008 could pull 65 mph or is that to much, in stock condition to get the fuel economy
gotblazers
1/2 ton status
pretty sure that depends on your transmission and differential gearing.
79bonanza
1/2 ton status
haha yea i prolly should have thought that one threw befor posting lol
did the m1008 ever come with a automatic with overdrive or was it just th400 in them
did the m1008 ever come with a automatic with overdrive or was it just th400 in them
th400 in all of them but with the 700 and 6.2 you will get 24-25 MPGs 
79bonanza
1/2 ton status
i bet a 5 speed swap in a m1008 you would get awsome milage cruising
K5dreamer
1/2 ton status
i bought my truck looking that way. it went from the military, into service as a sheriffs department emergency search and rescue truck. they painted over the emblems in white to match the rest of the truck, its about five different shades of white right now. hopefully by the end of the year it will have seen the inside of a body shop to repair current damage, and will come out mojave gold. and ill bedliner the top black.
My setup pulls easily to 60-65 mph. i cruise 55-60mph, and on a few harrowing instances ive had it up to 75-80mph. but why on earth youd want to do that is beyond me. crusing at 55-60 i get low 20's for mileage.
My setup pulls easily to 60-65 mph. i cruise 55-60mph, and on a few harrowing instances ive had it up to 75-80mph. but why on earth youd want to do that is beyond me. crusing at 55-60 i get low 20's for mileage.
quinryan
Registered Member
The Army didn't buy CUCVs with the overdrive TH700R4 that was available on the civilian C/Ks. Instead, M1008/9s and such came with the TH400. The 400 is a LOT tougher than than the 700R4 (and the TH350 upon which it was based), and given the needs of military service, that probably figured into the decision.
If i remember correctly (not always the way to bet), the 400 was also used in HMMWVs. M998-series vehicles (HMMWV) do not have PARK available in the tranny. I do not remember if this is so for the CUCVs. In either event, you should (world's most dangerous word) be able to run 65MPH (as another responded it does kinda depend on gearing), but you will be up in RPM range some.
Redline is ~3000 for the 6.2.
If highway work is critical, the 700R4 bolts right up. There are a LOT of them out there, so $$$ shouldn't be too bad. If you go that route, I'd recommend a shift kit (I have a B&M in mine) and an aftermarket tranny cooler, too.
Best of luck.
If i remember correctly (not always the way to bet), the 400 was also used in HMMWVs. M998-series vehicles (HMMWV) do not have PARK available in the tranny. I do not remember if this is so for the CUCVs. In either event, you should (world's most dangerous word) be able to run 65MPH (as another responded it does kinda depend on gearing), but you will be up in RPM range some.
Redline is ~3000 for the 6.2.
If highway work is critical, the 700R4 bolts right up. There are a LOT of them out there, so $$$ shouldn't be too bad. If you go that route, I'd recommend a shift kit (I have a B&M in mine) and an aftermarket tranny cooler, too.
Best of luck.
79bonanza
1/2 ton status
well since im mainly trying to buy a m1008 just for a daily driver for mileage i was thinking of swaping the axles from my k-10 in it ( 8 lug 10 bolt, 14BFF with 3.73 gears open carriers) and prolly running 33's or 35's on it. in the future id prolly swap a nv4500 into it and drive with overdrive, mainly im just trying to ride on gears for some good mileage. what are your guys thoughts on this.
79bonanza
1/2 ton status
did all the m1008 miltary trucks come with turbo'd 6.2
No M1008 had turbo from factory
79bonanza
1/2 ton status
hmmm well thats sucky, didnt some 6.2's have turbo kits on them
I'm not aware of any coming from the factory with turbos. There was a dealer installed option with a Banks turbo kit for a few years somewhere around the late-80's to early 90's.
Stomis
Professional Amateur
That is correct. Banks turbo kit on the 6.2 was the Yenko of diesels at the time
Lol what a silly comparison.
