351 with 302 heads - Club Cobra

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#5 (permalink)

06-04-2014, 10:48 AM

Igofastr

Senior Club Cobra Member

Join Date: Oct 2004

Location: Granite Bay, Ca

Cobra Make, Engine: SPF GT40P-2265/393W, KMP318 (PROJECT!!!!!)/CSX478

Posts: 1,158

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Quote:

Originally Posted by Bill D

Yep! OEM 302 heads have 7/16" head bolt holes. 351 heads have 1/2" holes. Most if not all aftermarket heads have 1/2" holes

Thanks for the confirmation.

My point is that the holes in the heads will be too small for the 1/2 inch bolts that the 351W block needs. I would assume that the heads will need to be machined to fit the bolts through.

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Ron R

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