Good info, thanks,If you want power, endurance, and reliability the 532 can deliver all of that. On pump gas with AFR325 heads your looking at 800HP/720#/ft all below 7000 rpm and all very usable. This using a stroke that GM had for decades in the BBC.
So in a similar built engine say 13:1 comp, AFR 325's each cammed for the same usage goals etc etc. What would be the smart route and what would the power differences be between say a 532, 540, 555
Next question is guys recommending a 4.5'' crank. That would move me up into much bigger cube engine territory. That's fine, I have no problem with considering that. Will these heads support a build that big? I presume it would be over 580cid with that crank