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Non-counter weight crank is lighter, so it revs quicker, worked for years on my 2.5 hot rod, unless you plan on rpms above 7500 they are fine. Early S heads are 36 intake 35 exhaust I believe and will be fine if you get 36 mm pmo intake manifolds or get early S 35 mm carbed manifolds. I agree E or solex cams are better than S for your intended purpose. Is your case aluminum or mag? alum has more strength. 9.5 cr seems to be max unless twin plugged. 2.2, 9.5 cr, solex, 40 webers, early or ssi exhaust, S head should be 180 to 190 reliable fun hp. best
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