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Old 07-27-2012, 07:27 PM   #11
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Re: GMC 6.2 swap

I drove school bus for years. We ran the dickens out of the 9.0L. We then got the 466 and it wasnt near as fun. Then we went to the 360 and I quit. LOL! I cant remember seeing a 9.0 with any engine issues, not even head gaskets.
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Old 07-27-2012, 11:17 PM   #12
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Re: GMC 6.2 swap

Wow!! lol Well, Back in 1985 here in NC the state bought it's first series of Diesel school buses, and they all were exclusively 1985 S-1800 60 passenger Thomas 9.0L's. Some of them had Air Brakes, some did not. And, since then they still have a good bit still running as Activity buses. Now here's the issue NC had with 9.0L's. Since state law mandates ALL school buses have a maximum road speed of 45MPH. (Which still holds true today. Activity buses can go 55MPH) They had the buses geared to where they would kindly max out at 45MPH. Which is around a 6.14 gear ratio with ALL Spoke Hub, 40 inch, 9.00-20 tires they had them specd with. Well, they ran ok for about 6 months, then they all suddenly started popping head gaskets one after the other. NC, was highly pissed with International and didn't buy anything from them for maybe 4-5 years after. So, with that in mind I kindly have that fear with mine as well. But, a school bus mechanic here told me, that if your 9.0L had more than 100,000 on it and never blew it, it probably wouldn't. But, like I said there is still alot of late 80's Activity buses with their 9.0L's still hanging on pretty good. But, when the blow they're sold off instantly. NC, also has a 20 year/200,000 mile limit on ALL school buses here too. In NC the state DPI (Dept. Of Public Instruction) governs the whole state, as far as buses go. Pretty much every School bus in NC is the same spec, and paint scheme.
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Old 07-27-2012, 11:25 PM   #13
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Re: GMC 6.2 swap

Lets see, this was about 1988-1994 for me. Those things would run the hills of upstate NY farm country screaming! Most of them topped out at 65. We had tacographs that we had to bend the needles on to keep out of the bosses office. ;) I was opposed to being the slowest one on the road, just for safety reasons.
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Old 07-28-2012, 03:17 AM   #14
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Re: GMC 6.2 swap

Haha!! Yeah, Tachographs, I've heard of those, but I've never seen one on real life. lol
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Old 07-28-2012, 09:44 AM   #15
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Re: GMC 6.2 swap

Quote:
Originally Posted by opus
Ha...kinda like the 6.9 IH. If you got through 60k miles without head gaskets, the thing would last to infinity. It was gutless too, but who cares. I have seen 6.2's with tons of miles on them. How they got there beats me but they did. Who wants a Duramax, etc. Close to $50k and its nothing but wires and electronic components. Give me a mechanical engine any day....whatever it may be! I'm hungry..........
My wife works for a towing company, still running a 1986 F-350 hoist truck (bought new, her boss still has the cancelled check, dated December of 1985), 6.9/4-speed, 4.11 gears, and 996,000 miles on it. Amazingly, it has over 650,000 miles on the injector pump! (Original went a bit more than 300K, the NAPA rebuild is still going!) At 1,000,000 miles, it will spend a year displayed in the showroom of the dealer where he bought it. It will then get a full restoration...and go back into service.

They also have a 1979 International S1700 tow truck...with over 1,000,000 miles since the engine was in-framed. Yep, it's a DT466...still running an unopened bottom end with over 1.8 million miles.
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Old 07-28-2012, 06:45 PM   #16
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Re: GMC 6.2 swap

Quote:
Originally Posted by Jarlaxle
Quote:
Originally Posted by opus
Ha...kinda like the 6.9 IH. If you got through 60k miles without head gaskets, the thing would last to infinity. It was gutless too, but who cares. I have seen 6.2's with tons of miles on them. How they got there beats me but they did. Who wants a Duramax, etc. Close to $50k and its nothing but wires and electronic components. Give me a mechanical engine any day....whatever it may be! I'm hungry..........
My wife works for a towing company, still running a 1986 F-350 hoist truck (bought new, her boss still has the cancelled check, dated December of 1985), 6.9/4-speed, 4.11 gears, and 996,000 miles on it. Amazingly, it has over 650,000 miles on the injector pump! (Original went a bit more than 300K, the NAPA rebuild is still going!) At 1,000,000 miles, it will spend a year displayed in the showroom of the dealer where he bought it. It will then get a full restoration...and go back into service.

They also have a 1979 International S1700 tow truck...with over 1,000,000 miles since the engine was in-framed. Yep, it's a DT466...still running an unopened bottom end with over 1.8 million miles.
wow impressive
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Old 10-09-2012, 11:49 AM   #17
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Re: GMC 6.2 swap

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Originally Posted by chev49
43 hrs isa bit much...should take half that... the 6.2 is ok, 6.5 is way more powerful, but eats more pass head gaskets cause turbo only on one side... i have 1 ton dualie 4wd with 6.5... also injector pumps usually only last 150k miles or so. today is starter change today so no work on bus..
you can easily put in the 454 if you want the gas hog...but thats another couple days of work as well...

"turbo only on one side"

Could you explain this statement please? I am unsure what you mean.
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Old 11-04-2012, 01:12 AM   #18
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Re: GMC 6.2 swap

I didn't read everything everyone else said, but I expect a lot of negativity, so I won't.

I have a 1988 Chevy crewcab diesel. It has a 6.2 with a Banks turbocharger on it and a Gear Vendors splitter/overdrive. I have towed with this truck for 10 years and my trailer, a 3-axle gooseneck, weighs 6,000# empty. I have a track loader and a hoe, and years ago, I was going to several events a year with a Bronco. I've seen a lot of miles, but most of my towing is local now. I also have a 2000 Ford Powerstroke and the Banks 6.2 is stronger than the stock Powerstroke.

A stock naturally aspirated 6.2 isn't very strong. Neither is a stock natural 6.5. They aren't enough different to notice the difference. A 6.9 or 7.3 in a Ford is a little stronger, but without a turbo, those are horrible too. The turbo is the magic with a diesel. Don't install a diesel without a turbo. 6.2 through IDI 7.3 are the same with a turbo. They all have the same injection pump and are all limited to 250hp with the screw removed.

A 6.2 with a turbo is better than a 454. It won't reach the horsepower numbers of the 454, but you never drive in the rpm range that the 454 makes those numbers with a diesel. You don't need a tach with a diesel, just an EGT gauge. When the EGT gets high, downshift. That's all you need to know.

A 6.2 is cheap--if you claim to be part of Al Queda, the Navy will drop 6.5s on your house. Just a tip. They bolt to anything a 4.3-7.4 gasser will bolt to and there are a lot of parts out there for cheap.
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Old 11-04-2012, 01:38 PM   #19
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Re: GMC 6.2 swap

Quote:
Originally Posted by Will
I didn't read everything everyone else said, but I expect a lot of negativity, so I won't.
There was a bit...but for the most part, people confuse the 6.2 with the 5.7 Olds motor in the cars. They think it is a bored out version of one of those.
(It has nothing to do with the 5.7 as we know)

I am glad I can buy a 6.2 running good for 500 bucks.

Grab a full sized GM car, stuff the 6.2 in it with not too awful many mods...and you have a 28 MPG (in front of a 700R4 with highway gears) and it will yank the full framed car up any hill in overdrive all day long WITHOUT a turbo on it.

It is one of the best ways to drive heavy iron and not make opec richer.

Veggie oil power even. Those mechanical pumps are not that picky.

Are they a 6B cummins or a DT? no. They don't cost it either.
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Old 11-04-2012, 01:39 PM   #20
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Re: GMC 6.2 swap

Oh...BTW the turbo only works on half the engine?? Huh????
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