BAE fat head 5 vs AJ fuel head

BAE 451 fat head 5 with littlefield 14.71 kobelko k 11 44 mag vs AJ old fuel heads 511" kb same blower same mag , both blowers 50 over which one would make more hp? and in a 2500lb powerglide promod which one would be quicker in 1/8 mile? trying to make a decision. thanks

 

Which head?

It depend on the compression a lot , if the compression is the same in both motors, The Fat head motor works best with alky. That is what Brad designed it for, smaller combustion chambers,offset rockers for flow, ect for the alky burners. The Aj combination would work better on Nitro.
Rattler