PS once the balancer is on you'll have to take the bolt back out, otherwise the fan blades hit it.
drilling the front 1/2" of threads is so you don't have to crank so much on the bolt.
'51 Chevy 1/2 ton w/'62 261, HEI, offy, fentons, dual carter/webbers, t-5 & 12 bolt posi
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