Thanks for all the info. I wondering if anyone has gone with porting and bigger valves in the 289 heads? I have the 63cc combustion chamber with 1.67/1.45 valves. Is it worth it or does is make more sense to go with one of the above suggestions?
Also, does anyone have any suggestions on headers? I'd like them to look as close to stock as possible, but breath better than the stock manifolds.
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