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Diesel Leaf Springs

Discussion in '1973-1991 K5 Blazer | Truck | Suburban' started by surg82k5, Mar 6, 2001.

  1. surg82k5

    surg82k5 1/2 ton status

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    I have an '82 6.2L Blazer. I am thinking about putting a mild lift (2-4 in) and I would like to retain the ride quality I had before the lift. It does ride rough some would say but I like it that way. Does any one know what the factory leafs were rated lb/in?? Does any one have any suggestions on which lift is best. I don't do rock crawling or lots of flexing..so i don't really need all of that articulation. Thanks for all the help.

    Sergio
     
  2. Emmettology 101

    Emmettology 101 3/4 ton status

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    I used to have Superlift 4" HD front springs. They rode decent with the 350 I had in it. Isn't the 6.2 use the same block as the 350? Wouldn't the weights be similar?

    HTH

    Mike [​IMG]
    See <font color=green>EMMETT</font color=green> -&gt; <A target="_blank" HREF=http://emmett.coloradok5.com>http://emmett.coloradok5.com</A>
     
  3. surg82k5

    surg82k5 1/2 ton status

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    No using the 350 Block was what gave chevy a really bad name in the light truck diesel industry. they didn't hold up to the compression of the diesel. the compression in my 6.2 is about 22:1. it is a different block that from what i can tell is a lot heavier.
     
  4. HarryH3

    HarryH3 1 ton status Author

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    The 6.2 diesel doesn't use the same block as the 350. The 6.2 block is WAY heavier, with lots of extra webbing on the bottom end to help contain the crankshaft. It was designed and built from the ground up to be a diesel engine. They were built by Detroit Diesel.

    The "350" diesel engines from the late 70's were quickly discontinued because they were ripping the crankshafts out of the block. [​IMG] GM diesel trucks never sold well after that fiasco, mainly because so many people think that GM still uses the converted gas engines as diesels. [​IMG]

    <font color=black>HarryH3 - '75 K5</font color=black>
    <A target="_blank" HREF=http://ThunderTruck.ColoradoK5.com>http://ThunderTruck.ColoradoK5.com</A>
     
  5. RLBstein

    RLBstein 1/2 ton status

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    No, the 6.2L is not a 350 block. They tried doing that on some but the compression would blow the main caps. The lift I got for my 82' blazer w/ a 6.2L is the 4" Rough Country that came with front springs, 4 shocks steering arm, u-bolts, and lift blocks ( which I threw out and installed ORD Shackle Flip) The flip kept my stock springs and the ride is great. The Rough Country front springs are stiff and plenty good for the 6.2L.

    85 Blazer on an 82 chassis, 6.2L Diesel, ORD flip, 35's with no cutting on a 4" lift.
     
  6. Emmettology 101

    Emmettology 101 3/4 ton status

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    Sorry, I wasn't sure if that was the 350 diesel version or not.

    Mike [​IMG]
    See <font color=green>EMMETT</font color=green> -&gt; <A target="_blank" HREF=http://emmett.coloradok5.com>http://emmett.coloradok5.com</A>
     
  7. muddin4fun

    muddin4fun 3/4 ton status

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    most lifts have stiffer springs, however, a disiel is much much heavier and so you would want a stiffer spring so the front won't "float"

    [​IMG] Keep your feet dry [​IMG]
    <A target="_blank" HREF=http://muddin4fun.coloradok5.com>http://muddin4fun.coloradok5.com</A>
     
  8. DSLBLAZER

    DSLBLAZER Registered Member

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    I used Rancho 4 in springs on my 83 6.2 blazer. They were stiffer that the factory leafs! Now I have the Skyjacker 6in. and it rides much better. Ther front does not float at all, (the rs5000s probably have somthing to do with that.) If you want a stiffer ride use the rancho springs, but make sure they aren't the softride. The softride started sagging on my friends 86 6.2L truck.

    Keven
     
  9. 6.2Blazer

    6.2Blazer 1/2 ton status

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    I used Skyjacker's Softride 4" springs on the front of my '90 with the 6.2 and have had no problems. I really don't think you would need the heavy duty versions.
     
  10. AgDieseler

    AgDieseler Certified Scrap Producer Premium Member GMOTM Winner

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    I have 4" superlift springs up front, and everybody in my fourwheeling club comments of how nice the ride is. I think it's pretty rough, but when you're coming from the world of highly modified CJs, I guess it's the lap of luxury.

    David
    '85 diesel burban
     
  11. Blue85

    Blue85 Troll Premium Member

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    Well here's a question: How do the stock diesel springs compare to the stock gas springs? Are the diesel ones unique, are they the same as the 3/4 ton or heavy duty 1/2 ton front springs or are they just regular 1/2-ton two-leafers?

    <font color=blue>"Guys aren't able to get $15-20million a year anymore, so you have to play for the love of the game." --Penny Hardaway (Orlando Magic)</font color=blue>
     
  12. DSLBLAZER

    DSLBLAZER Registered Member

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    The stock ones on my 6.2L blazer were 2 leaf reversed arch just like the gassers have.

    Keven
     

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