Fordmuscle.com
Fordmuscle.com has an article on their website where they test a number of heads, including stock 289 heads, ported 289 heads, Edelbrock, Holley, Brodix, World, and other aftermarket heads. It should make for a good read, unfortunately you have to shell out either the $5 bucks for a monthly membership or I think $15 buck for an annual membership.
I have yet to subscribe, but I probably will go ahead and shell out the money to see their testing. It's all done on a flow bench at Mondello technical school. Hope this brings some good info to ya.
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65 Mustang Coupe...Comp Cams 262 Xtreme Energy, T-5 conversion, Romac Balancer, 620 Front Springs-4.5 Mid-eye rear springs.......work in progress
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