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1979 C-10

Discussion in 'Engine & Performance' started by Mark Jones, Apr 13, 2019.

  1. Mark Jones

    Mark Jones Member

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    Location:
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    First Name:
    Mark
    Truck Year:
    1979
    Truck Model:
    C10
    Engine Size:
    327
    I finally got my 327 installed in my 1979 C-10 big ten. Hoping to get the drag strip next week and I have a few questions for the experts.

    1. 350 non air, turbo 350, 12 bolt open rear end, typically what gears could this truck have?
    2. Does anyone make light weight drag race wheels for this 5 lug truck, I want 15X3.5 on the front, and 15X10 on the rear?
     
    Craig Nedrow and 78C10BigTen like this.
  2. 1987 GMC Jimmy

    1987 GMC Jimmy Automobile Hoarder

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    Check your SPID label in the glovebox. The gearing code is something like GU*. That’ll tell you what it came with originally, but that may not be what it has now.
     
  3. Mark Jones

    Mark Jones Member

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    Truck Year:
    1979
    Truck Model:
    C10
    Engine Size:
    327
    That sticker is gone. Surprising the truck was fairly virgin, and the rear end is original, I do plan to build another rear rear end for the truck, and then I can call it done. I just hope theres not 3.08s in there, which will be counter productive to the 13 sec time slip I would like to see.
     
  4. Frankenchevy

    Frankenchevy Supporting Member Supporting Member

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    I’m curious why you decided on a 327?
     
  5. 78C10BigTen

    78C10BigTen Full Access Member

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    First Name:
    Ted
    Truck Year:
    1978
    Truck Model:
    C10 BIG TEN
    Engine Size:
    350
    My 78 big 10 with a 350/th350 and 12 bolt (used to be posi) was a factory 3.08. It is now a 10 bolt 3.42 posi...
     
  6. Mark Jones

    Mark Jones Member

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    Truck Year:
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    Truck Model:
    C10
    Engine Size:
    327
    Good question: Because we were in the middle of building my sons 302 and had bought several virgin 327 core engines, I DO NOT like nice virgin GM engine cores to go to waste, or just sit around and never do anything with them, and I wanted my 14 year old son to understand what its like to build something out of old discarded parts most people would never use. Now was it a good idea to use a 327 for a performance truck build-not so much, but the truck is cool!


     
    Last edited: Apr 13, 2019
    Craig Nedrow, bucket, Catbox and 5 others like this.
  7. 82c10stepside

    82c10stepside Junior Member

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    Truck Year:
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    Truck Model:
    C10
    Engine Size:
    454
    Mr. Jones is pretty well known for making power. Lots of BBC Chevy powered hot rods with engines built by him. And several informative YouTube videos if do search.

    Good luck on the build!
     
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  8. Frankenchevy

    Frankenchevy Supporting Member Supporting Member

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    I checked out the video. Looks like a healthy amount of tq from the 327. I have one in my garage. I think I’ll borrow his specs some day.
     
  9. Mark Jones

    Mark Jones Member

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    Truck Year:
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    Truck Model:
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    Engine Size:
    327
    I was able to weigh my 1979 C-10, with no driver it weighed 4040 pounds, big ten long bed, turbo 350, iron headed small block, factory wheels, no air conditioning. It also has the 3.07 rear gear.
     
    1973c10 likes this.
  10. roundhouse

    roundhouse Full Access Member

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    K10
    Engine Size:
    350
    327 can be a pretty good drag engine
    They spin up to high rpm quickly

    My brother had a built one in a 76 4wd

    Remove the lake pipe covers to Uncork the headers , put it in 4-low and best a corvette or mustang
     
  11. Mark Jones

    Mark Jones Member

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    Truck Model:
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    Engine Size:
    327
    The C10 posted a 13.90 on it third pass down the track despite the 3.07 open rear end in Colorado's thin air, 8000 DA 24.9 baro.
     
  12. Mark Jones

    Mark Jones Member

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    Truck Year:
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    Truck Model:
    C10
    Engine Size:
    327
    Some pictures

    IMG_1151.JPG

    IMG_1152.JPG
     
  13. bucket

    bucket Super Moderator Staff Member

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    Truck Model:
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    Engine Size:
    350-454
    That's some damn good reasoning right there :)
     
  14. Mark Jones

    Mark Jones Member

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    Truck Year:
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    C10
    Engine Size:
    327
    Update: got it down to 13.50 @ 102
     
    curse, Catbox and Goldie Driver like this.
  15. AuroraGirl

    AuroraGirl Supporting Member Supporting Member

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    First Name:
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    Truck Year:
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    Truck Model:
    K10, K25
    Engine Size:
    400(?), 350
    my 78 1/2 ton BUT K10 has 3.73 if the front diff tag is to be believed, the label doesnt say unless im missing it

    64d263232de1f795514ea36b3c607733.png
     

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