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6.5t trucks what were the good years

Discussion in 'The Garage' started by muddyblzr, Sep 7, 2006.

  1. muddyblzr

    muddyblzr 1/2 ton status

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    im looking at buying a 6.5t 1 ton and i was wondering what years to look for and which ones to avoid.
    im hoping for crewcab longbed dually, automatic, 2wd or 4wd.
    also what components should i look for and what should i avoid
    :ears:
     
  2. diesel4me

    diesel4me 1 ton status Premium Member

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    older ones??

    I heard the older 6.5's that still had mechanical injection were the best ones..the 1993's had the turbo,and still had the "old" injection setup..newer ones are computerized,I read they have lots of problems with the injector pumps and its controller the "PMD"..it overheated and caused stalling and no start problems..expensive to replace..

    My brother had a '93 GMC K2500 that he sold about a year ago--it had the desireable 5 speed manual tranny with the extra low first gear (a one year deal I'm told..) and despite it being quite rusty and had over 100,000 miles,he had no problem getting 3500 bucks for it!..had a plow too!..

    That's all I know about 6.5's..I'm sure others here who have more info will be willing to share it...:crazy:
     
  3. Pookster

    Pookster 1/2 ton status

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    92 was also one of those years, but it was a transition year- so some (like mine) had the 6.2, and even more some, had some 6.5 NA. It also had the ultra low granny first gear in the NV4500.

    There are variations of the 1 ton however- I believe there was no one ton in that body generation until 92, as I also believe the 1 ton bodies had a longer run than the regular pickups did.
     
  4. muddyblzr

    muddyblzr 1/2 ton status

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    so the early years are the better ones?
    anything else i should look for?
     
  5. yellowK20

    yellowK20 Well Lubricated Premium Member GMOTM Winner

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    My 93 K3500 went 422,864.7 trouble free miles went it gave up, wife was driving and she says she didn't over rev it. But I think it seen about 6000 rpm and then went boom she was pulling a Gooseneck trailer full of hay down a pretty steep hill with out hooking up the trailer brakes. Now theres dents in the oil pan:mad: I have a 98 3500 with a 6.5 and it only has 140,ish and its been broke twice since I got it stupid electronic crap:mad:
     
  6. muddyblzr

    muddyblzr 1/2 ton status

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    damn. hmm what year did they switch to electronic? seems like i need to find me a mechanical one. the 4l80e sounds nice also but i can live with a manuel. (just gotta learn how to drive it better)
     
  7. yellowK20

    yellowK20 Well Lubricated Premium Member GMOTM Winner

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    Ask tRustyk5 hes a moderator here he would know for sure but I think 93 was the last year for mech injection
     
  8. muddyblzr

    muddyblzr 1/2 ton status

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    i cant pm on this board but hopefully he'll see this and shed some knowledge.
     
  9. Pookster

    Pookster 1/2 ton status

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    the electronics were able to be cranked up more. that said, I think if you just up the boost and fuel, you do virtually the same.

    422k!!! Amazing! Overrevving is always a possibility I guess if you go downhill too fast..
     
  10. 73k5blazer

    73k5blazer Unplug the matrix cable from the back of your head Premium Member

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    Well, the later years got a revised PMD, upgraded cooling (you can easily retrofit an older 6.5 with the newer setup though), and a few other refinments. My '97 has almost 200,000mi, and runs strong. I didn't have the revised PMD until it got replaced under warranty in 1999. Other than general maint., not a lick of trouble with the motor. My uncles got a 2000 crew (last year for the GMT400 body style) with a 6.5t, he's never had his PMD replaced, he's got 180k on his.
    So mabey just the first couple years that the electronic pump was used is bad? I think most were replaced under warranty though.
     
  11. 85-m1028

    85-m1028 1/2 ton status

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    97- UP got a revised block and cooling upgrades, 130gpm high flow water pump with dual thermostat crossover. add to this the duramax fan conversion and voila not to shabby!!!

    These engines can be cranked up to about 250 hp pretty reliably. AM General did a further redesign toward the end of 2001 making the best vesion available, but most of these engines are used in hmmwv's.

    You can however purchase an AM General long block an dump it in any truck you get with a 6.2 or 6.5!! You may find a truck that has already had this done!! These blocks can handle 300hp!!!
     

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