What would it take to make 1.44 lbs-ft per cid ?

The simplest way is to put a TorqStorm supercharger on it. I have one on my 8.5 to 1 slant six and it’s putting out 400 hp and a ton of torque. It does cost because of the fuel and ignition systems needed to run it, but the grunt at any RPM in any gear is a joy to drive