I was wondering, there are several M1009s coming up for auction locally next month. I'm thinking about getting one for a off road vehicle. What are the plus and cons of a 6.2 diesel, I've never owned one, is it about the same as a carbo 350?
CK5
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6.2 Diesel
- Thread starter hammermachine
- Start date
k20
3/4 ton status
pros: good mileage, low end tq, fuel injection
cons: slow.....slow......did I mention slow? (granted Im used to a 600hp 496 as my daily driver so my cucv is a little sluggish)
cons: slow.....slow......did I mention slow? (granted Im used to a 600hp 496 as my daily driver so my cucv is a little sluggish)
Cucv
Yeah that's what I thought, rated 155hp... but the rear comes with a locker, which is something I have to buy and install into my current K5.
Yeah that's what I thought, rated 155hp... but the rear comes with a locker, which is something I have to buy and install into my current K5.
CUCV2
5/4 ton fun
Pro- Once they are running, they will run w/o juice if the alternator(s), batteries, etc., become spent. They are also an affordable diesel option that is fairly easy to work on.
Cons- No turbo. They are available for the motor but generally are costly and time consuming to get in there.
If you can live with the slow but steady nature of the 6.2 then you're all set. If you want explosive power on hand, you might want to keep looking. The 6.2 does have a lot to offer but it is not for everyone.
Cons- No turbo. They are available for the motor but generally are costly and time consuming to get in there.
If you can live with the slow but steady nature of the 6.2 then you're all set. If you want explosive power on hand, you might want to keep looking. The 6.2 does have a lot to offer but it is not for everyone.
CUCV2
5/4 ton fun
M1009s have lockers? That would make sense but I always looked to the M1008s & M1028s for drivetrain and lockers.
Cucv
According to the net they suppose to have an Eaton Locker (“Gov-Lok”) and 3.08:1 gears.
According to the net they suppose to have an Eaton Locker (“Gov-Lok”) and 3.08:1 gears.
Absence of a turbo is a pro in my book, but to each his own preference.
If you're into racing fellow motorists between traffic lights, you'd do best to get another engine - but for everything else there's the 6.2L. Versatile and trusty, they didn't put the 6.2 in the CUCVs for nothing. I'd pick it over a 350 any ol' day of the week.
If you're into racing fellow motorists between traffic lights, you'd do best to get another engine - but for everything else there's the 6.2L. Versatile and trusty, they didn't put the 6.2 in the CUCVs for nothing. I'd pick it over a 350 any ol' day of the week.
That's not really a locker, most people actually prefer an open diff to a gov-lok because the gov-lok carrier is notorious for breaking.
If you're going to keep it stock the gov-lok works well IME. With bigger than stock tires you have a good chance of breaking it.
Cuvu
I think a mild lift, enough to clear 35's. With the tight lift laws in NJ I can't afford to go much over 48".
I think a mild lift, enough to clear 35's. With the tight lift laws in NJ I can't afford to go much over 48".
MaxPF
1/2 ton status
You are definitely going to want deeper gears. 3.08's aren't going to be spectacular on or off road, especially with 35's. 4.56's will have the motor humming on the highway, but they will make a world of difference for acceleration and trail use.
BTW, nice avatar
BTW, nice avatar
Regear a 6.2L truck so that it's actually got the appropriate gears for the tires it's running and you'd be surprised how slow they aren't. Mine isn't half bad with the 38's and 4.56's. 4.10's or 3.73's and it would spin 35's nicely.
Or, 4.56 and 31" tall tires like a stock M1008... great off the line... sucks if you need to go over 55 mph though.
Not to mention you're screaming the revs the whole time.
Thats why I added O/D in the form of an NV4500 
I run my K5 with 39.5's and 4.56's and it isn't what I call slow. Very comparable to the carb'd 350 I yanked out of it. Upside is off-road with the 6.2 is awesome. GM couldn't have built a better crawler motor...it does all the things you want it to do but have trouble getting a gas engine to do while crawling.
It makes a metric assload of torque right down at idle. Idle is goverened, so it'll add fuel to keep idling if it sees load. This makes creeping along through rough stuff at idle a pleasure. Diesels run cold at idle, so no worry about overheating at slow speeds and high temps. Diesels also use very little fuel when idling along...$10 worth would last me all day when fuel was $2/gallon. Being injected it runs reliably at any angle that it can maintain oil pressure too...
Watch the gearing and you'll be pretty happy with it. Add a manual tranny and you'll love it.
A turbo would be nice, but only for on the road IMO.
Rene
It makes a metric assload of torque right down at idle. Idle is goverened, so it'll add fuel to keep idling if it sees load. This makes creeping along through rough stuff at idle a pleasure. Diesels run cold at idle, so no worry about overheating at slow speeds and high temps. Diesels also use very little fuel when idling along...$10 worth would last me all day when fuel was $2/gallon. Being injected it runs reliably at any angle that it can maintain oil pressure too...
Watch the gearing and you'll be pretty happy with it. Add a manual tranny and you'll love it.
A turbo would be nice, but only for on the road IMO.
Rene
6.2, mechanical injection, no need for electricity, just get 'er going and it can go under water no problem.
With a snorkel...
Rene
Rene
MaxPF
1/2 ton status
Just to nitpick, that isn't entirely true. The IP has a fuel shutoff solenoid that requires constant power to allow fuel to flow. If it loses power it will shut off the fuel and the engine will stop. That said, it is a fairly low-draw solenoid so the battery alone will keep it engaged for many hours.
I wonder if it is possible to replace the shut off solenoid with a mechanical shut-off? Then, as long as the mechanical fuel pump is retained the engine would truly require no electricity to operate
K5dreamer
1/2 ton status
LOVE my 1986 M1009. its my daily driver. granted, with the 33in tires and 3.08 gears, its not the fastest thing around, but i didnt buy it to be (ive got an IROC for that). its a rock solid reliable vehicle, that does very well off road. i have yet to get it stuck (although i tend to play it pretty safe cuz i usually wheel alone), ive taken it through mud, streams, rocks, and steep grades. with the top off and everything. not only that, but im running biodiesel (B20) and drive to and from the wheeling locations, getting 23 mpg to boot. find me a carbed 350 truck that does that 
Not to mention it makes an awesome beater truck to haul things, and beat the snot out of, and not care. i backed into a boulder and bent the bumper, and laughed about it. the windows broke and it got rained on, i didnt care, no interior to get wet.
all in all, zero regrets on the purchase, and i love it every time i take it for a spin, you wont be disapointed.
Not to mention it makes an awesome beater truck to haul things, and beat the snot out of, and not care. i backed into a boulder and bent the bumper, and laughed about it. the windows broke and it got rained on, i didnt care, no interior to get wet. all in all, zero regrets on the purchase, and i love it every time i take it for a spin, you wont be disapointed.
Cuvu
Thanks for the info. I'm curious about the Biodiesel/veggie oil thing. But if your getting 23 mpg out of a 5400 lbs 20+ year old vehicle that's pretty amazing.
LOVE my 1986 M1009. its my daily driver. granted, with the 33in tires and 3.08 gears, its not the fastest thing around, but i didnt buy it to be (ive got an IROC for that). its a rock solid reliable vehicle, that does very well off road. i have yet to get it stuck (although i tend to play it pretty safe cuz i usually wheel alone), ive taken it through mud, streams, rocks, and steep grades. with the top off and everything. not only that, but im running biodiesel (B20) and drive to and from the wheeling locations, getting 23 mpg to boot. find me a carbed 350 truck that does that
all in all, zero regrets on the purchase, and i love it every time i take it for a spin, you wont be disapointed.
Thanks for the info. I'm curious about the Biodiesel/veggie oil thing. But if your getting 23 mpg out of a 5400 lbs 20+ year old vehicle that's pretty amazing.
