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Cummins Conversion

Discussion in '1969-1972 K5 Blazer | Truck | Suburban' started by Jacobm99, Feb 19, 2007.

  1. Jacobm99

    Jacobm99 Newbie

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    Thinking about putting a 24 valve cummins (98.5 - 2002) with 6 speed in my blazer. Anyone have any leads on info?
     
  2. vtblazer

    vtblazer 1/2 ton status GMOTM Winner

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    Was a guy over on 67-72 doing it but I'm not sure how far he's gotten. :dunno:
     
  3. Yukon Jack

    Yukon Jack 1/2 ton status

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    A friend of mine started doing a cummins swap about two years ago. Got sidetracked but I think he is back on the project. I haven't been to his place it quite some time to see where he is at on the project.

    I know everyone says the frames of the 67-72 trucks (69-72) K5's will need reinforcement.

    Here is a link to a thread I started over there with some pics of where he was about 2 years ago

    http://67-72chevytrucks.com/vboard/showthread.php?t=99988
     
  4. Burt4x4

    Burt4x4 3/4 ton status

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    I know it can be done as I saw a 67-72 pickup with a diesel in it..I was at a stop light here in Modesto so I didn't get a chance to look it over but he had a cummins decal on the truck and the exahust was LOUD diesel..
    Good Luck and keep us posted if you doit!
     
  5. K5MONSTERCHEV

    K5MONSTERCHEV 1/2 ton status

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    Box the frame and plan on a body lift for that tranny. Honestly it would be easier to get a wrecked Dodge and put a blazer body on the frame. That poor 'ol 1972 chassis is gonna have a rough life with that beast between the frame rails.
     
  6. 1967k10

    1967k10 1/2 ton status

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    I'll try to get some of my brothers up tomorrow.
     
  7. Jacobm99

    Jacobm99 Newbie

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    Boxing the frame is already on the agenda, as well as having to fab a new front crossmemeber and tranny cross member. I'm hoping that I won't need a body lift.

    1967k10: Does your brother's rig have a body lift? Also, is it a 12v or a 24v? Also, any pics would be appreciated (specifically the fron crossmember and motor mounts).
     
  8. 1967k10

    1967k10 1/2 ton status

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    Here's a couple.I can get more. It's a 92' 12V and there is no body lift. We built everything so far. It's getting put off though,in favor of a newer 12V with a 7100 pump. If you're going to wire a 24V,step up to an 03'+ Common rail and really make some power :D .

    Picture 004.jpg

    Picture 005.jpg

    Picture 028.jpg
     
  9. BUDDY

    BUDDY 1/2 ton status

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    do you have a fan in there? I can't really tell from the pictures. :confused:

    Also, I'd put a little bigger loop in the heater core "bypass". Looks a little kinked in the pic. :D

    I just met a guy from around here who is putting a 4BT in a grand cherokee. Talk about a sweet project! I went over there to get some compressor mounting bolts for my TJ's OBA & when I walked in I was like HOLY CRAP!! :bow: :bow: :bow:
    He's hoping to get 30mpg out of it once he gets it running, but he does have a couple of clearance problems & he'll have to really baby it until he does the axle swaps, but he's getting real close. It'll be awesome once he's done.

    He also had another 4BT with a th400 sitting in his shop. He said, "let's put one in you're blazer", as he pointed it out to me. I thought, "Oh, don't tempt me." I've always wanted a Duramax with the 6-speed in it, but I think this guy would let me have this 4BT for super cheap if I wanted to go that direction. Seriously thinking about it, but I really want a manual, & that would probably kill the budget. Although, there was this 92 2500 on craigslist. Hmmmmmm.

    Later,
    Buddy
     
  10. CDA 455

    CDA 455 3/4 ton status

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    Wow:eek1: !




    That would be a dream swap for me :bow: :bow: !
     
  11. Yukon Jack

    Yukon Jack 1/2 ton status

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    That is one full engine compartment!
     
  12. 1967k10

    1967k10 1/2 ton status

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    Yeah,it's a full engine compartment :rolleyes: . I too want a D-Max/6spd like I have in my Daily Driver,with 500HP.
     
  13. tarussell

    tarussell 1/2 ton status

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    Sounds cool !

    Tom
     
  14. bigblock72

    bigblock72 1/2 ton status Premium Member GMOTM Winner

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    Make mine a LBZ D-max and a 6 speed Allison
     

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