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years with a deisel?

Discussion in '1982-Present GM Diesel' started by four_by_ken, Nov 3, 2004.

  1. four_by_ken

    four_by_ken 1/2 ton status

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    What years Blazer had deisels?

    6.2?
    6.5?

    Thanks

    Thinking of one for a daily driver instead of the S-10. I get 24 mpg in the 4 cyl S-10... if I can get anywhwere near that in a full size... I just may do it.
     
  2. AgDieseler

    AgDieseler Certified Scrap Producer Premium Member GMOTM Winner

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    Blazer 82-91, 6.2L NA C
    Blazer/2 Dr Tahoe 92-97ish(?), 6.5TD L56

    Both engines would be the light duty version with emissions controls, and look for and average mpg somewhere near 18-20 and 15-18 respectively.

    6.2Ls were fueled differently from 6.5TDs with a typical flow rate of 50-59 cu mm for the former and 60-65 for the latter.

    Both would be a very cool ride, especially a later body style diesel, since they are mighty scarce. /forums/images/graemlins/thumb.gif
     
  3. 6.2puller

    6.2puller 1/2 ton status

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    I thought they started in 82?? I could be wrong though and probably am.
     
  4. Drey

    Drey 3/4 ton status

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    Ya I coulda sworn 6.2s started in 82
     
  5. tRustyK5

    tRustyK5 Big meanie Staff Member Super Moderator GMOTM Winner Author

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    First 6.2 Blazer or Jimmy was 82. Before that the deisel option was the Olds 350 deisel abortion.

    Rene
     
  6. AgDieseler

    AgDieseler Certified Scrap Producer Premium Member GMOTM Winner

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    Whoops! Previous post edited for accuracy. /forums/images/graemlins/whistling.gif

    Something that I just thought about is that there are guys with 6.2Ls in their LWB trucks getting 25+ mpg. And there's not much to it either. Most started with a 2wd, numerically low gears for low cruising rpms, low fuel rates, and gave it plenty of room to breath.

    I recall someone on the DP topping out at 32 mpg with a 6.2L with 200k on the clock. /forums/images/graemlins/eek.gif

    I bet with enough tuning, a 4wd blazer could turn out economy numbers over 20 mpg easily given a good running engine. Fuel, air, and timing - that's about it.
     
  7. imiceman44

    imiceman44 1 ton status Premium Member

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    [ QUOTE ]
    Blazer 82-91, 6.2L NA C
    Blazer/2 Dr Tahoe 92-97ish(?), 6.5TD L56

    Both engines would be the light duty version with emissions controls, and look for and average mpg somewhere near 18-20 and 15-18 respectively.

    6.2Ls were fueled differently from 6.5TDs with a typical flow rate of 50-59 cu mm for the former and 60-65 for the latter.

    Both would be a very cool ride, especially a later body style diesel, since they are mighty scarce. /forums/images/graemlins/thumb.gif

    [/ QUOTE ]

    One thing though, the 92 blazer was a NA 6.5 only, there was no 93 and then 94 had the 6.5TD and then 95 became the tahoe.
     
  8. tRustyK5

    tRustyK5 Big meanie Staff Member Super Moderator GMOTM Winner Author

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    i think Joez pulled down 25 mpg with his Blazer somewhat recently...Canmore gets mid 20's with his pick-up.

    20-22 should be pretty easy even in a K5.

    Rene
     
  9. joez

    joez 1/2 ton status

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    Yup, 25.7 mpg. Now im averaging right under/arround 20 with 36" TSL's.

    Heres the setup that broke 25mpg:
    85 K5, 220K on the clock, rebuilt pump and injectors, dual 2 1/2" exhaust, Stanadyne performance formula, 3.73 gears, 33" radial BFG's, 700R4, and drove it easy. I have since added the J-code intake, modified the intake snorkel, but switched my wheel and tire combo, and i now drive with a heavier right foot.
     
  10. OFFRDK5

    OFFRDK5 1/2 ton status Premium Member

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    FYI. It's Diesel instead of Deisel!!

    And you can get great mileage out of a 6.2. I got 27 mpg. 10 bolts, 3.08 ratio, 31x10.50s, 700R4, empty, and a light right foot. The skinny pedal will determine your mileage. The more you push it and when you "fly" down the highway your mileage will drop like a lead weight!!
     
  11. imiceman44

    imiceman44 1 ton status Premium Member

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    [ QUOTE ]
    FYI. It's Diesel instead of Deisel!!

    And you can get great mileage out of a 6.2. I got 27 mpg. 10 bolts, 3.08 ratio, 31x10.50s, 700R4, empty, and a light right foot. The skinny pedal will determine your mileage. The more you push it and when you "fly" down the highway your mileage will drop like a lead weight!!

    [/ QUOTE ]

    Yep mileage is the opposite of a gasser on the highway I average 20MPG on mine, but 30MPG in town since it's mostly just off idle so I run on fumes most of the times, but on the highway I red line it most of the times so it's a big difference.
     

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