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How to figure out what motor I have?????

Discussion in 'The Garage' started by dasanii19, Nov 26, 2006.

  1. dasanii19

    dasanii19 1/2 ton status

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    The guy I bought my 1976 K5 blazer from told me the truck has a "corvette motor" in it. They guy is no mechanic by any means.

    Anyways, where do I look to find the numbers on my Block to see what type/year motor I have? The motor is still in the truck. I can post back what I find and if it will help to see some pictures I can take some as well. Please let me know.

    Thanks guys
     
  2. MattK

    MattK 1/2 ton status

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    block casting numbers are located at the rear of the block, facing upwards, on the passenger side of the block. if it's dirty back there you might have to scrub some grime off in order to fully read the #'s.

    write it down. then go here.


    http://www.mortec.com/castnum.htm
     
  3. dasanii19

    dasanii19 1/2 ton status

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    Thanks man, ill go check it out right now and post back what I find if you care to hear :D
     
  4. dasanii19

    dasanii19 1/2 ton status

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    would you happen to know how many bolts mounts I should have on my torque converter? (Bolting the fly wheel to the TC) I have a TH350 and only count three, I think a few might have busted off but am not sure. "1975 K5 blazer"

    Thanks
     
  5. b454rat

    b454rat 1/2 ton status Premium Member

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    Should be only 3...
     
  6. dasanii19

    dasanii19 1/2 ton status

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    Thanks. Do they need to be torqued at a certain spec? or loc tite used? washers?
     
  7. u2slow

    u2slow 1/2 ton status

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    Three torque converter bolts is normal.

    There is a machined flat pad at block deck height on the front passenger side of the block. I will have a set of numbers plus 2 or 3 letters. Post up this letter code and I can decode it for you. (Usually more descriptive than the block casting number.)
     
  8. dasanii19

    dasanii19 1/2 ton status

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    ill be right back
     
  9. Corey 78K5

    Corey 78K5 1 ton status

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    I have bought a few of those trucks over the years with "Corvette Motors":rolleyes: I always wonderd who all the idiots were yanking engines out of Vette's to put in pickup's:haha:
     
  10. u2slow

    u2slow 1/2 ton status

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    8 cylinders, in a vee configuration..... just like a Corvette. :rolleyes:


    Unless of course they mean the other 'Vette. :haha:
     
  11. dasanii19

    dasanii19 1/2 ton status

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    ok, there were small numbers 13L188923 then to the right there where bigger #/letters- VO116CKK but the 4th #/letter I was a little confused about, it didnt look like a #1, it looked like the #7 but with a line under it so I figured it was a #1. I was confused because the 4th didnt look like the 3rd "#1" The third looked like a #1

    Does that make sense? If not ill try to explain it better. Let me know
     
  12. u2slow

    u2slow 1/2 ton status

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    Here are the possibilities for the CKK

    4-98 (1.6L) 2BC 70 H.P.
    (VIN 9, OPT L17)
    Chevette 80 (:haha:)
    8-350 2BC 145 H.P.
    Chev Pass. 73
    Monte Carlo 73
    Nova 73
    Sprint (GMC) 73
    8-350 4BC 165 H.P.
    (VIN L, OPT LM1)
    Nova 76
    8-350 4BC 170 H.P.
    (VIN L, OPT LM1)
    Chevelle 77
    Monte Carlo 77
    8-350 4BC 175 H.P.
    Chevelle 72-73
    Sprint (GMC) 72
    8-350 4BC 200 H.P.
    Camaro 72
    Nova 72
     
  13. dasanii19

    dasanii19 1/2 ton status

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    So how would I find out exactly what it is?

    Are any of those motors decent for my K5?
     
  14. dasanii19

    dasanii19 1/2 ton status

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    They are all low HP, except maybe for the chevelle :confused:
     
  15. u2slow

    u2slow 1/2 ton status

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    Does it matter? Its a pretty average 70's 350. Stock, your Blazer would have had 145 or 160hp.

    Should be a 2-bolt main. 2BC vs. 4BC is pretty straightforward. Points or HEI? Orange or blue paint on the engine?

    Get the casting numbers form the head and block. www.mortec.com for reference. You should be able to nail it down a little closer.
     
  16. dasanii19

    dasanii19 1/2 ton status

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    Thanks for your help
     
  17. dasanii19

    dasanii19 1/2 ton status

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    So by the info I gave, is this enough to determine what headers will fit? any suggestions on what headers I should get? and where?
     
  18. After Ours

    After Ours 1/2 ton status

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    When you get headers, order them for the vehicle the 350 is in, not what it might have come out of. Hooker and headmen are 2 I have had luck with in the past.
    As far as the whole vette engine.... they used 4 bolt mains in some trucks and because they were used in vettes also I think people say it has a vette engine in it..It makes it sound fast...in the end a 350 is a 350, bore it, stroke it and love it.
     
  19. dasanii19

    dasanii19 1/2 ton status

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    Makes sense thank you.. Any suggestions on where to buy these headers at online?
     

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