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The 063 heads are great platform for a mild street motor...with some larger valves and some minor massaging they will make good power. Some folks call them a semi-open chamber design...very similar to the later 290 heads.
These heads with some upgrades and the right cam will make some decent horsepower, especially on a smaller big block combo. Pricing depends upon if they are bare or complete or need to be gone thru. Special dates may command a premium...low end $500 pair up to $900 for really nice ones. I've seen singles sell pretty cheap... The intake is heavy and not much help unless you are building a numbers engine...aluminum dual plane models are a better choice. The factory 163 intake is a pretty common part, and if you don't need a special date any one will do the trick. Originals can run $350 to over $500 depending upon dates and condition. You can even get a modern repro of this part from several sources. https://www.musclecarcentral.com/196...c-1002c-ch.htm -wilma
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