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post #1 of (permalink) Old 08-23-2000, 11:45 AM Thread Starter
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1 ton 4x4 advice needed

I'm going to look at a 1983 GMC 1 ton 4x4, 6.2 Diesel, 4spd,
they are asking $2200, its needs brake work, and exhaust...
What should I look for on one of these beasts?
(I'm in NY so the biggest thing is rust)
What kind of transfercase did they have? NP205? divorced?

Any thoughts you can throw my way would be great...

Luke

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post #2 of (permalink) Old 08-23-2000, 12:04 PM
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Re: 1 ton 4x4 advice needed

Be cautious with that year diesel. '82-'84 were weaker castings. If it starts easily with minimal smoke and runs smooth, its probably ok. If its tough to start or smokes alot - beware. Don't get me wrong, the 6.2L is a great motor, I have 140k miles on my '85 K20 with no problems.

Otherwise sounds pretty good. It would have the NP205, Dana 60 upfront. Check the cab mounts for rust, also check the frame by the steering box for cracks near the bolt holes.

Hope that helps.

post #3 of (permalink) Old 08-23-2000, 12:05 PM
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Re: 1 ton 4x4 advice needed

<font color=purple>More than likely it's an NP208. Make sure it's a 60 front & the body isn't completely wasted. If so, should be well worth that in parts if nothing else.</font color=purple>

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post #4 of (permalink) Old 08-23-2000, 02:25 PM
 
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Re: 1 ton 4x4 advice needed

Hey I was just wondering if you ever put togther those dual transmissions you were talking about once?

[img]/wwwthreads_images/icons/smile.gif[/img]I want a 6.6 Duramax please[img]/wwwthreads_images/icons/smile.gif[/img]
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post #5 of (permalink) Old 08-23-2000, 02:51 PM
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Re: 1 ton 4x4 advice needed

Dual Transmissions? Youve sparked my interest what are you talking about?

post #6 of (permalink) Old 08-23-2000, 02:53 PM Thread Starter
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Re: 1 ton 4x4 advice needed

I wish...at this point I have sucessfully confused myself as to what I'm going to use as a tranny in my M715? Dual SM465's would still make a nice combo.

Biggest problem right now is finding enough time, dual trannies are still a possibilty. If I get the GMC diesel truck I'll probably be looking for an OD tranny and the 715 will be put on the back burner...

Anybody else put together a dual tranny setup while I wasn't watching?

Luke

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post #7 of (permalink) Old 08-23-2000, 03:00 PM Thread Starter
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Re: 1 ton 4x4 advice needed

A while back there was a thread on how to mate 2 trannsmisions together so you could have a killer crawl ratio and run street gears in the axles for highway crusing.

I still think it "should" be fairly easy to mate 2 - SM465 trannies together with some work, backed by a married NP205 transfercase.
So with 3.54 gears dual SM465s and a NP205 - low crawl would be 298:1!! So 55mph with 33" tires would be ~2000rpms

Luke

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post #8 of (permalink) Old 08-23-2000, 03:56 PM
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Re: 1 ton 4x4 advice needed

A 1T of that year with a manual transmission would almost be guaranteed to have an NP205. Easy to check, look underneath, if its cast iron its a 205.

post #9 of (permalink) Old 08-23-2000, 04:11 PM
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Re: 1 ton 4x4 advice needed

Just think, with the Doubler and dual transmissions, the M-715 would have a crawl ratio of 987:1! At that ratio, even the rear D70 might not be enough beef. I know it'd be impractical, but I'd still like to see it.

JEEPN
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