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Old 03-05-2018, 11:23 AM   #1
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1983 310 What engine is this? Please Members help!

Hi Folks,
Please help me to identify this engine!
Can not find a number but may be you know what type this is.
It is mounted in my 1983 310 and i just know it is a diesel..

Thanks for any help in advance!!!
Pierre
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Old 03-05-2018, 01:04 PM   #2
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From what glimpses of the engine I can see past all the plumbing I smacks of the Oldsmobile Diesel with a TurboCharger and hooked to a Turbo Hydamatic 400 Transmission.
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Old 03-05-2018, 01:07 PM   #3
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Did not know they put Olds diesels in the motorhomes.

I was thinking it was the Isuzu diesel. I could be wrong though.
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Old 03-05-2018, 01:19 PM   #4
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The Isuzu diesel was an option that year. Has 151hp and 289lbft of torque. Great little coach, enjoy.
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Old 03-05-2018, 01:26 PM   #5
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My Que's , corner of valve cover , position of oil filler and cap shape , oil pan and starter , front accessories all look like the Olds Diesel .

I didn't think they put them in MH's or with a Turbo charger . But that is what it looks like to me.

This from 30 years in auto repair.
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Old 03-05-2018, 01:30 PM   #6
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Mine has a big block 454, so what do I know!!
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Old 03-05-2018, 02:31 PM   #7
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Quote:
Originally Posted by TinPeddler View Post
The Isuzu diesel was an option that year. Has 151hp and 289lbft of torque. Great little coach, enjoy.
That's not the 6bd1a Isuzu, it's a swap of some sort but not the Isuzu.
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Old 03-05-2018, 02:43 PM   #8
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GM 6.5 turbo diesel?
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Old 03-05-2018, 05:01 PM   #9
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GM 6.5 turbo diesel?
Yep. The 6.2 and 5.7 weren’t turbocharged. Looks like my 6.5 Suburban engine.

The 6.2 was a Detroit Diesel engine. The 5.7 was a 350. Oldsmobile’s were 5.7, so was the Caprice Diesel.

Just had head gaskets on my 6.5 with close to 300,000 miles.
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Old 03-05-2018, 06:18 PM   #10
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Did a little research, Airstream used the Isuzu in line six diesel or the 454 gas that year. So it makes sense that there was an engine swap done at some time. It would make sense using the V8 diesel as I'm sure the hardware was similar to the V8 gas. Hope this helps.
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Old 03-05-2018, 06:56 PM   #11
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Thanks for all your help! I find on the outside the 7.4 sign. And it seems it has been swapped to diesel....
Do you think it is the 6.2 or 6.5 detroit gm diesel engine?
May anyone can confirm! I have no sample or knowledge how these looks ....
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Old 03-06-2018, 03:30 AM   #12
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Originally Posted by 310 View Post
thanks for all your help! I find on the outside the 7.4 sign. And it seems it has been swapped to diesel....
Do you think it is the 6.2 or 6.5 detroit gm diesel engine?
May anyone can confirm! I have no sample or knowledge how these looks ....
6.5.
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Old 03-06-2018, 06:33 PM   #13
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It is probably a GM 6.2 Diesel with an after market turbo, maybe a Banks. If so they are very reliable. I ran two of mine 210,000 miles with no problems. One thing you should know about the 6.2 with turbo is what some mechanics think is the rear main seals leaking. However, if you get under the engine, while it is running, with a real bright light you will see the small leaks from under both cylinder heads are the culprit. The heads obviously needed retorquing overtime due to head bolt stretch. Those turbos will produce over 13 PSI boost. I sure liked those engines. Some later year engine had less than reliable injector pumps, but GM refused to correct the problem. Yet. a reliable pump was available. $$$
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Old 03-07-2018, 03:40 AM   #14
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Thumbs up

thats a great information! And it sounds good! Thanks a lot! I will look for the leaks next time running....
Thanks again!
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