Not Ranked
Iwould destroke it to 396 inches and let it breathe /rpm like the tunnel port and 7000 rpm engines were developed--Some of Fords best race results came with the nascar engines destroked/427 bore so they could run less weight(fairlanes/comets) save brakes on the shorter ( 1-1 1/2 mile) tracks---
You'll have more power /torque than you will use driving and can still make an scary run when ever you want to change underwear--need more bottom end torque? thats what the gear shift is for---anytime your running thru the gears you will be above the torque curve in any hp car--thats why the hp number is the one that counts--
If that is a H-M block it isn't drilled for hydraulic tappets----
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