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4 bolt

Discussion in '1973-1991 K5 Blazer | Truck | Suburban' started by James90, Jun 30, 2000.

  1. James90

    James90 1/2 ton status

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    how do I tell if my block is a 4 bolt main

    [​IMG]Go prepared
     
  2. BlazerGuy

    BlazerGuy 3/4 ton status

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    I think you have to pull the oil pan and just count 'em. It might also say what it is on the casting number.

    YEEEEE HAWWWWW[​IMG]
     
  3. James90

    James90 1/2 ton status

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    is there a code or some thing

    [​IMG]Go prepared
     
  4. JimmyDie6.2

    JimmyDie6.2 1/2 ton status

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    you could look on the back of the block( drivers side ), and find the casting number. the number is directly behind the head on the block, slanted a little. You'll need to climb on there with a flashlight and a rag, wipe it down, check your number, then run the number. or you can drop the pan and count the main cap bolts. Having a 4- bolt block is very good, But remember, you don't really need it unless your making serious HP or torque, like over 350. JS
     
  5. nyyef

    nyyef 1/2 ton status

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    i think if it is the original motor then it would be a 4 bolt. somebody correct if i am wrong, but i think i read somewhere that all trucks had 4 bolts mains caps.

    Knife.
     

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