Let's see those 6.2 Detroits!!!

[Dieselwrencher]

Originally Posted by thirdstreettito

Bullet Cars AU. Tom has got them running 5-15psi all day long NO PROBLEMS. $5K for a S/C kit for a 6.2/6.5.

What kind of power range we talking here?

[STOCKISH]

Originally Posted by Dieselwrencher

What kind of power range we talking here?

Cummins killing power!!



















Just Kidding. But I bet it gets awesome fuel mileage.

[Dieselwrencher]

I bet so.

[thirdstreettito]

225hp-450 depending on what type of 6.5 its on. IE: Optimizer 6500, AMG/GEP P400, etc.

So technically Josh and Ryan, it is Cummins killing power.

[special-K]

I'd call it 6.5 killing power. And you can get a lot more than 450 from a Cummins...and have it last.

[Dieselwrencher]

Originally Posted by thirdstreettito

225hp-450 depending on what type of 6.5 its on. IE: Optimizer 6500, AMG/GEP P400, etc.

So technically Josh and Ryan, it is Cummins killing power.

LMFAO! Are you stoned?

Sorry, back to the pics. I have no pics of any of them that I've removed. Carry on.

[lindstromjd]

Nothing special about mine. Got ARP studs, a GM-8 turbo, 6.5 marine injectors, and two cracked heads. Gotta pull it back out of the truck and put some different heads on it.

[Dieselwrencher]

Very nice, stinks about the cracked heads.

[thirdstreettito]

Originally Posted by Dieselwrencher

LMFAO! Are you stoned?

Sorry, back to the pics. I have no pics of any of them that I've removed. Carry on.

Are you? Read up on this stuff. Heath diesel has a 500hp 6.5. He had a 650hp one back in the 90's with a 16 cylinder injection pump that ran 5500 rpm.The P400 and 6500 are amazing. Also, a company in sweden has been making a 475hp supercharged P400 for $20K for boats for about 6 years now. It is'nt as hard as you think. It is however costly.

500hp 6.5 = $10K +
500hp Cummins = $4K +/-

But a high hp 6.5 is a helluva lot more unique than the usual Cummins swap.

[special-K]

^ What's really unique is one that'll hold up.

Originally Posted by thirdstreettito

225hp-450 depending on what type of 6.5 its on. IE: Optimizer 6500, AMG/GEP P400, etc.

So technically Josh and Ryan, it is Cummins killing power.

Originally Posted by special-K

I'd call it 6.5 killing power. And you can get a lot more than 450 from a Cummins...and have it last.

I'll say it again,going for that much more power is a 6.5 killer. You can sit at a computer and read all you want,that doesn't make you an expert. You won't see these people talking about the blown motors. These motors in boats is a different story. They have a hole lake of water to cool with. I like these motors and have run them since before some people here were born. They are good (for the most part) for what they were designed as,economy,low maintenance,and longevity (for the most part). They are at best,"pretty good" and should be left pretty much stock. I was driving these things when I couldn't find anyone around who knew anything about them. Mechanics seemed to think they were no different than the 5.7s. I learned from experience and eventually I got on the computer and was on The Diesel Place. I learned a lot there and got all excited about performance,just like some of you are. I stopped going there when it seemed I was the one answering the questions and it became more about the Duramax. That's when I started posting here. I had my '92 6.5TD I bought new and never touched it. It has been a fantastic truck and now is just shy of 300,000k. Last year was the first time a head came off for new head gaskets. Now I have another coolant into cyl problem and haven't torn into it yet. That motor owes me nothing. My first was an '84 6.2 with Banks Sidewinder kit. I ran that 275k before selling to a friend who ran it for years,until the body rotted off and he sold it. I've had two seize up that I believe were both sudden coolant loss problems,like my '92 has now. My '92 started making white smoke,I parked it,and towed it home. I mean right then and there,just parked it and shut it down. So,I hope I can save it.
The motor in my'95 blew up at 135k. I had that truck just the way I wanted,now knew these motors were iffy,and decided to buy a crate motor all brand spankin' new from Peninsular Marine in '03. This was a GEP higher nickle w/beefed-up main webs,18:1,125 GPM,dual t-stat,medium duty turbo,and reworked DB2 pump. It's their 300hp motor. I added an intercooler,had the gauges, '97-up air cleaner with AFE filter,custom mandrel bent cold air intake,and BD 4"mandrel exhaust. I had it dyno'd at a friend's shop and it came out to 315 HP. That thing was a real nice running motor. I had fun being the under dog and dropping jaws on some Ford and Dodge owners,as well as all the "new to trucks" Duramax drivers. Sure,they could get more out of theirs,but they never expected to eat my black smoke. I really enjoyed rolling up the mountains with power to spare as I passed the Power Strokes with fading power. I was really happy with that truck and many people were impressed. Unfortunately,one evening I hit a curve (at reasonable speed) where an accident scene had just been cleared...all except the antifreeze all over the road. It was like hitting ice when the roads had been dry everywhere all day and it was early fall. I corrected and it whipped the other way (like on ice) and I was sideways all over the road and got t-boned,flipped,and totalled. I saved what I could off the truck,including the motor with 15,000 miles. I had my '92 with just over 200k on original IP,injectors,and glow plugs in need of service. I decided to put the Peninsular motor in to get my money's worth (over $9000) out of it. I got about 30k out of that until one day it started making a racket so I parked it and hauled it home. I thought it was the NV4500 and pulled that. Well,you could pull the flywheel back and forth an inch or more.I pulled the pan and found both a broken crank and broken main webs. This was 45,000 miles on all new parts. So,it wasn't a bad balancer. My '92 still has it's original balancer. I dug that original motor out of mothballs and put it back in with the injectors,pump,and glow plugs from the 600# $9,000 piece of junk. I'm convinced it was too much boost. These things just can't take it. And,even N/As die prematurely. I still run these,still like them. But,I'll say there are too many failures and/or limitations with these motors to brag them up as a great motor. I'll never waste my money on modifications. Just run'em as they are and make the most of them. I get 20-22 mpg in my '85 Jimmy with 12.50/35 rubber and 4.10 gears. That's something not many can brag from a rig that can hold it's own off road and not need a trailer to get it there. I get 13.5-15 mpg out of my '92. Nothing to get excited about. It used to be a lot better,like 18-20 when new. Just being honest

[joe231]

Well said Tim!
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[68Timber]

Originally Posted by madcow75

There must be some more diesel squares here.

Here's an old pic of mine, the 6.2 is a great way to have a square without the gas hog issue.

[NITRO1977]

Originally Posted by Dooley

Here's a few.

Nice engine at this link also!
http://www.thedieselpage.com/readers/kolkman.htm

Second pic is my old 84 cucv turbo convert. Junkyard parts, and a little turn on the fuel screw. The truck went from not having enough power to maintain speed uphill, to picking up speed uphill. Definately not overpowered, but much better. I was carefull not to exceed 10 psi of boost though.

[joe231]

Originally Posted by NITRO1977

Second pic is my old 84 cucv turbo convert. Junkyard parts, and a little turn on the fuel screw. The truck went from not having enough power to maintain speed uphill, to picking up speed uphill. Definately not overpowered, but much better. I was carefull not to exceed 10 psi of boost though.

Nice!

How did you route the exhaust? Outside the frame rail?
Got any more pics?
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[Dieselwrencher]

Originally Posted by thirdstreettito

Are you? Read up on this stuff. Heath diesel has a 500hp 6.5. He had a 650hp one back in the 90's with a 16 cylinder injection pump that ran 5500 rpm.The P400 and 6500 are amazing. Also, a company in sweden has been making a 475hp supercharged P400 for $20K for boats for about 6 years now. It is'nt as hard as you think. It is however costly.

500hp 6.5 = $10K +
500hp Cummins = $4K +/-

But a high hp 6.5 is a helluva lot more unique than the usual Cummins swap.

Dude I don't need to read up. I work on them for a living. All 3 brands and all diferent makes in trucks and equipment. I wouldn't push a 6.2 or 6.5 much if I thought it was going to be used hard at all. Even if I had a boat load of money to spend I doubt I'd do it unless it was in a cruiser for fun. Sorry to ruffle your feathers, but I've seen more of these blown up than any of the dodge or ford diesels combined from the same era. And besides I bet that $10,000 500hp 6.5 won't make it half the time a 500hp 5.9 or 7.3 will. Anyhow, here's a pic of a board member's truck I found that has a 6.2 in it.

[special-K]

That crew cab is nice! He must have bought that from www.rustfreeclassics.com . I remember looking at that one.

I'd like to do this:

453T Detroit Diesel K2500 The final result -...

Or this:

453 Detroit Powered 77 GMC Crewcab - YouTube

Or how about this?

Cummins vs Detroit diesel - YouTube

[Edahall]

1982 Chevy Suburban, 3.08 gears. Excellent engine and gets high fuel economy. Headers made a huge difference in power and gained some fuel economy as well. Does fine for towing 26 ft Airstream trailer.




1990 Chevy Suburban. Only a 5.9 engine though. Put 10000 lbs trailer behind and you hardly know it.





6 speed NV5600 and NP205 transfer case

[Dieselwrencher]

Very nice! But I think you just started a bad vibe in this thread.

[Edahall]

Originally Posted by Dieselwrencher

Very nice! But I think you just started a bad vibe in this thread.

Both are good engines. I can't say which one is better. Both are extremely dependable. The 6.2L shines in the fuel economy department and the engine behaves more like a gas engine since it makes its power more in the high rpm range. The 5.9L has more grunt power but takes longer to accelerate from 0-60 mph. It's also a bit quieter and smoother running than the 6.2L.

[special-K]

Nice set-up on the '90. I haven't looked for a while,do you know if those headers are still made...and who made them? I kinda forgot about them after having turbo diesels. Now I have an '85 6.2 Jimmy and that would be a nice upgrade,then new exhaust/better flow mufflers. I believe it did make a noticeable difference with those installed. On the '91 6.2 Suburban I had I had a custom 3" dual exhaust system made and used 6" round Dynomax mufflers. I really felt a difference in power.

[Dieselwrencher]

I know Banks used to make them. I don't know if they still do or not. And on the acceleration on the Cummins, it's not hard to get that improved at all.

[jrsavoie]

There are a couple of good forums with some really good info on the the 6.5's & 6.2's. dieselplace.com & thetruckstop.us

I have several 6.5's and put about 800,000 on my 89 C2500 with Getrag 5 speed. 300,000 on the original 6.2 and 500,000 on the GM crate 6.5. 5w30 Amsoil with a FS2500 bypass filter. Oil change about every 20,000 miles. Weighed about 8,900 most every day.

[Edahall]

Originally Posted by special-K

Nice set-up on the '90. I haven't looked for a while,do you know if those headers are still made...and who made them? I kinda forgot about them after having turbo diesels. Now I have an '85 6.2 Jimmy and that would be a nice upgrade,then new exhaust/better flow mufflers. I believe it did make a noticeable difference with those installed. On the '91 6.2 Suburban I had I had a custom 3" dual exhaust system made and used 6" round Dynomax mufflers. I really felt a difference in power.

These headers were made by Stans Headers and I believe they're still being made. I've had some experience with 6.2 with Banks turbo but my preference any day is headers and a free flowing exhaust.

Originally Posted by Dieselwrencher

I know Banks used to make them. I don't know if they still do or not. And on the acceleration on the Cummins, it's not hard to get that improved at all.

Yeah, my Cummins is still the stock 160 hp / 2200 rpm max.

[arrover]

Edahall, do you have a build thread on that Suburban with the 6 speed in it? Nice trucks.

[csa daddy]

Ok Stan's only lists 6.5 headers will they work on the 6.2
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