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½” Head bolt capability

Posted By Ted 16 Years Ago
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Ted
Posted 16 Years Ago
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Heads need to be able to use ½” head bolts.  Stock factory heads can be drilled without hitting water so that ½” head bolts can be used.  Likewise should be the same with any aftermarket replacement heads.  One idea is for the head bolt holes to be ½” except for a shoulder at the top to accommodate a 7/16” head bolt.  If using a ½” head bolt, then the shoulder is simply drilled out.  This feature is already on a variety of the SBF aftermarket heads so the heads can be used on either 302’s or 351W’s.

Lorena, Texas (South of Waco)


Glen Henderson
Posted 16 Years Ago
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The recommended way is to just run the 1/2" tap into the 7/16" threaded hole. John has used this method and states that it worked fine.

Glen Henderson



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