Re: My first iron OHV casting!
The original Miller/Cragar's required A LOT of spark advance to develope good power, Dodgde's suggestion is very good. Also, the originals used 6 cyl. Buick rocker arms, 1.25:1 ratio. I would recommend 1.5's for several reasons, like, most performance cams are ground for 1.5:1 rockers, and valve lift is very important.
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