For a little more insight into the questions concerning 289 vs. 351W heads, go to FORDMUSCLE.com and read the "Head to Head" article. Especially the section on stock heads. These "experts" seem to think the 351W heads out flow the 289 heads hands down. That's ported and unported comparisons on the flow bench.
Rev
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'66 Coupe, 306, 300 HP, C-4, 13.97 e.t., 100.3 mph
1/4 mi.
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