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'78 K5 - what came stock?

Discussion in '1973-1991 K5 Blazer | Truck | Suburban' started by fwr, Jul 11, 2000.

  1. fwr

    fwr Registered Member

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    \'78 K5 - what came stock?

    I just bought a '78 K5, and after reading some 4x4 mags and this forum, have come to realize I don't even know what I am driving. I know it has the 350 cid motor and an NP205 x-fer case. It's the four speed manual, so is that an SM435? What is that? What axles might I have? What is the difference between a "corporate" axel and say a Dana other than manufacturer? Thanks in advance, I'm tired of being ignorant.
     
  2. chevy4x4

    chevy4x4 1/2 ton status

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    Re: \'78 K5 - what came stock?

    For your manual transmission, it might beSM318/ SM326/ SM330/ sm435. You could have a corporate 12 bolt rear and a danna 44 front or 12bolt rear and 10 bolt front.

    <font color=red>Chevy4x4<font color=red>[​IMG]
    http://fourbyfour.coloradok5.com
     
  3. Blazer1970

    Blazer1970 1/2 ton status

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    Re: \'78 K5 - what came stock?

    Your tranny is an SM465.

    Tim

    1970 Blazer CST 4X4 350 SM465 NP205
    1987 Suburban 4X4 350
    1988 Chevy Pickup 4X4 350
     
  4. Boss

    Boss 1/2 ton status Author

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    Re: \'78 K5 - what came stock?

    Yep, SM465 is your tranny. Obviously you know that it is a 4speed manual tranny. Corp. 12 is your rear axle. either corp. 10 or Dana 44 is your front axle. We had a debate about this earlier I think, about when was last year Blazers and Jimmys came with D44's. Despite that, they are very similar in strength. D44 might be just a hair stronger. But the D44 parts are more abundant for it and cheaper. Hopes this helps yah.
     
  5. fwr

    fwr Registered Member

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    Re: \'78 K5 - what came stock?

    Thanks guys. I'm that much less ignorant now. Long way to go...
     

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