Selecting a new drive train for my 65

[Mercury]

Any plus you may gain from using the small chamber 289 cylinder heads (Higher COmpression) is offset by the Port and Combustion chamber design. Even ported and polished they dont flow all that well.

Unless your a wizard at Porting and intake and exhaust velocities and pressures.

You'd be alot better off using GT-40 heads come on crate engines and Explorers and other such.

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64 1/2 "D" code Red Mustang Coupe. 289, C4, Mallory duel point. Ported & Polished 65 heads shaved .01 with 351 valves, 11:1 comp, 1.7:1 rockers, blue wolverine lumpy cam, modified 4100 Hipo 4 barrel. GT Apperance pkg. And to many others to list

2000 Perf Red Mustang GT. 5spd. BBK Underdrive pulleys, Flotech off-road H pipe. Hurst T-Handle, 40 series Flowmasters, Steeda Tri-Ax. Ordered 4:10's.

64 1/2 red 6cyl coupe. Future resto.