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View Full Version : can you use a 6.2 chevy diesel>?


alaskakid
06-14-2011, 02:46 AM
was wondering if you can install a 6.2 diesel chevy v-8 into a 70's wagoneer or cherokee>?would it fit and is there an adaptor for it>?have a th400 and 727

billyj7175
06-14-2011, 03:43 AM
Lots of info here...

http://www.ifsja.org/forums/vb/forumdisplay.php?f=95

alaskakid
06-14-2011, 03:45 AM
ok thanks for that BillyJ dont want too start a whole new thread!!!sorry

Jacked
06-14-2011, 04:37 AM
You can also talk to Matt. He put a 6.2 in his and here is his build link:

http://www.ifsja.org/forums/vb/showthread.php?t=128010

86gwrhino
06-14-2011, 07:54 AM
but why? 6.2L deisel wasnt detroits finest hour to put it nicely

710 Burner
06-14-2011, 11:47 AM
but why? 6.2L deisel wasnt detroits finest hour to put it nicely
Its no Cummins or Powerstroke, but its not supposed to be. It works fine for its intended purpose.

rocklaurence
06-14-2011, 01:22 PM
You can also talk to Matt. He put a 6.2 in his and here is his build link:

http://www.ifsja.org/forums/vb/showthread.php?t=128010

Did he ever install the motor? The Thread finished 18 months ago without ever installing the diesel?:confused: I believe he hadn't removed the AMC unit and was planning on re gasketing the 6.2.

alaskakid
06-14-2011, 01:31 PM
Haha ok thanks guys I was just thinking about it because,a friend of mine said I could take it off his hands for 200$rebuilt with 30k on engine.but then again my 360 has always been good too me:)and I put it through some tough crap driving it in minus 50 degrees:) so rebuild time might just have too happen or I have a 390 block I can have done up

joe
06-14-2011, 01:34 PM
Its no Cummins or Powerstroke, but its not supposed to be. It works fine for its intended purpose.
x2 Just because it's not a Cummins doesn't mean it's a bad motor, regardless of what the folks who never owned one say.

lodmccloud
06-14-2011, 03:23 PM
People give the 6.2 a bad rap because GM put it in a one ton truck and it is not heavy duty power house by no means. My father bought an 82 C10 standard cab SWB 2wd and has put over 600K on it. The engine finally gave up the ghost at about 580K and it was his fault because it actually blew a head gasket and he just would not change it and it gouged a nice little valley on the desk surface.

130 hp with an early 700R4 and 3:42 gears added up to 31 mpg on the highway.

130HP with a 400 turbo after trans died the thirteenth time and 2:73 gears got 26 on the highway. really about ninety horses after the 400 ate any extra power.

tazjeeper
06-14-2011, 03:26 PM
I myself have not had one but sure know alot of people that wish they never did... and the 6.5 was even worse.
they do not get great milage and they sure do not have much power..x2 Just because it's not a Cummins doesn't mean it's a bad motor, regardless of what the folks who never owned one say.

rocklaurence
06-14-2011, 06:55 PM
Haha ok thanks guys I was just thinking about it because,a friend of mine said I could take it off his hands for 200$rebuilt with 30k on engine.but then again my 360 has always been good too me:)and I put it through some tough crap driving it in minus 50 degrees:) so rebuild time might just have too happen or I have a 390 block I can have done up

No! You have to do the Diesel--its the rules;) Plus, you wont like the 13 MPG that youll get with the 390:drivin:

86gwrhino
06-14-2011, 07:40 PM
you dont see many deisel suburbans because there are none left the 6.2 didnt last long, and yes i have had personal experience. if it was designed from the ground up to be a deisel it would be fine but unlike the motors followers will say it was a sbc converted to deisel. it worked but not for very long. in my opinion its only good for scap metal. but thats just me. i will say ifsja is the only place where ive heard people say the 6.2 is a good motor.

The PIG Smith
06-14-2011, 08:57 PM
I know we have some 6.2L Diesel haters here....but say what you will, the 6.2L Diesel is not as bad most claim.

I bought my '93 GMC 6.2L powered extended length 1 ton cargo van as donor for a FSJ Project.
The FSJ project is gone and I started using the van as a my tow rig.

Is my 6.2 a powerhouse? No
Can you compare it to a Cummins or a Powerstroke? No

But my 6.2 Diesel does a fine job with 200K miles on the clock!
I am sure it could use some injectors and other work, but it just keeps going on and on.

Without question is it the easiest Diesel engine that one can swap into a Full Size Jeep.
If you can swap in a small block Cheby, the 6.2L is just as easy.

I will go so far to say, the 6.2L perform as well if not slightly better than a Cummins 4BT in stock forum.
What the 4BT has over the 6.2 is the ability to accept insane levels of modification and long term reliability.
(However, I consider my 6.2 with 200K miles to have good reliability)

If anyone doubts that, then they need come take a ride with me in my van.

Here is where I towed a 1963 J200 for JeepBountyHunter

http://inlinethumb42.webshots.com/35689/2852052360049713712S500x500Q85.jpg (http://good-times.webshots.com/photo/2852052360049713712rGgedC)

http://inlinethumb54.webshots.com/48181/2688116260049713712S600x600Q85.jpg (http://good-times.webshots.com/photo/2688116260049713712xcoRmG)

Here is the whole story.
http://www.ifsja.org/forums/vb/showthread.php?t=122577

seamus
06-14-2011, 10:03 PM
Comparing cummins and power strokes to 6.2 diesels.... I'm not sure they should be putting cummins and power strokes in the same category.
I have a 180k cummins that has been trouble free.
My work has a fleet of power strokes they are terrible!
Of the seven there is always one down, the my key stuff is insane and when they break down the ford dealer has said on three different occasions " I dunno" I don't know why id dies on the high way and will not fire for 2 hours when its - 40 out.

Give me a turbo 6.2 over a power stroke any day, they weren't bad engines just not a screamer. I had an uncle who put 700,000 kms on a 6.2 suburban.

Go for it I say.

Keith

joe
06-14-2011, 10:51 PM
I know we have some 6.2L Diesel haters here....but say what you will, the 6.2L Diesel is not as bad most claim.

I bought my '93 GMC 6.2L powered extended length 1 ton cargo van as donor for a FSJ Project.
The FSJ project is gone and I started using the van as a my tow rig.


Bryan that's sorta how I ended up with my 83 C20 6.2 and it's just such a sweet running low maint truck I don't have heart to turn it into an organ donor.

The PIG Smith
06-14-2011, 11:10 PM
Comparing cummins and power strokes to 6.2 diesels.... I'm not sure they should be putting cummins and power strokes in the same category. Yes, I agree 110%
Comparing Cummins and Powerstroke to a 6.2L is Apples to Oranges comparsion.

Give me a turbo 6.2 over a power stroke any day, they weren't bad engines just not a screamer. I had an uncle who put 700,000 kms on a 6.2 suburban. No, they are not a screamer.
But for a good balance of power, ease of swapping, economy, they are good engines for a FSJ project.
They are cheap....can pick them up anywhere.
Mods are fairly easy also, but going to wild with these can produce some undesirable results.

If a person wants to spend big $$$ on an GM Diesel, then one needs to check out the The Optimizer 6500 by AM General.
This is the second generation of 6.5L Diesel redesigned and built by Navistar for AM General.
All the weakness have been addressed with this new engine and now produces 205HP with 440 ft.lbs. of torque! Nice!
http://www.enginebuildermag.com/Article/1458/the_optimizer_6500.aspx

The PIG Smith
06-14-2011, 11:13 PM
Bryan that's sorta how I ended up with my 83 C20 6.2 and it's just such a sweet running low maint truck I don't have heart to turn it into an organ donor. LOL! OOOYESS...I know exactly where you are coming from.
My van is a sweet running rig and it is in too good of shape to turn into an organ donor.
The 6.2L Diesel, 4L80E and 4:10 gears in a 14bolt rear axle is a great combo!

joe
06-14-2011, 11:26 PM
LOL! OOOYESS...I know exactly where you are coming from
The 6.2L Diesel, 4L80E and 4:10 gears in a 14bolt rear axle is a great combo!
Similar set up except mines got a TH400 behind it. But I like oddball stuff I've also got a 6.9 Ford(IH) that the world poo poo'd and at 200k runs like a top but sadly with crap 3.55 gears. I do think the inline cummins is a great motor but this cummins tunnel vision reminds me of my Harley days "if it ain't a Harley it's googly moogly. Fine if you're trying to focus on one brand but if you wanna learn tunnel vision keeps you from seeing some fine options.
Ok, I'm done defending the 6.2 or alternatives but I'm not signing up for a cummins tattoo either.

The Colonel
06-16-2011, 09:19 PM
Bryan-
What mileage does that van get towing and not towing?

The PIG Smith
06-17-2011, 05:48 AM
Bryan-
What mileage does that van get towing and not towing?
If I drive like Grandma...empty, I've gotten 20MPG
Generally I get 17-18ish empty
Towing between 16-18

Which was better than my J20, which gets 10 empty or fully loaded...10!

My van has a GVW of 9700# and 4:10 gears, so I think the mileage is pretty darn good!

alaskakid
06-17-2011, 12:34 PM
sounds good to me ;)

lobie
06-17-2011, 06:51 PM
I am going cummins because I've had it laying around for a couple years. I think the 6.2 and 6.5 are tough engines. They are cheap ($$$) and can last. Don't be afraid to use them.

jaber
06-18-2011, 08:42 AM
I read a thread on a diesel forum of a guy that took a pair of little 4 cyl Mitsu turbos and put one on each bank. If I get stuck using a 6.2/6.5, I'm going to have to try this myself. ;)

Around me, I just dont find any reasonably priced donors. I almost had a 6.5, but the guy never got back to me.:rolleyes:

mdill
06-19-2011, 01:03 AM
The 6500 optimizer/P400 looks interesting !

rocklaurence
06-19-2011, 06:29 AM
The 6500 optimizer/P400 looks interesting !

Im thinking in 5-10 years the military will be selling those as surplus for CHEAP.

tagjeep
08-21-2011, 03:43 PM
From what I've heard,GM designed the 6.2 to have the power of a 305 but with better economy. If you can live with that,it's not a bad engine.
Check the harmonic balancer on them. If the rubber goes out it will break your crank.
steelsoldiers.com cucv section has lots of info too.