Am I searching for another head?

Discussion in 'Street/strip 400/430/455' started by Grandpas67, Mar 18, 2018.

  1. Grandpas67

    Grandpas67 Well-Known Member

    We got a set of cylinder heads (advertised as 71 heads) with the engine block we purchased. After noticing the numbers didn't match i looked them up to see one is 1237661 (70-71 455) and the other is 1231786 (67-69(70)) 400/430/455).

    The only reason I ask is because of 2 different resources saying close to the same thing but not quite the same.

    https://www.teambuick.com/reference/casting_numbers_big_block.php

    http://www.buicks.net/shop/reference/bigblock_casting_numbers.html


    Thanks as always for your knowledge.

    Dave
     
  2. hugger

    hugger Well-Known Member

    661 is 71, 786 is 70 basically the same head cc them and go
     
    Grandpas67 likes this.

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