Torque Monster !

Again... this is a theoretical exercise. I am not really going to dump $15k into an old MH engine. We all have an idea of how to build a drag motor. Building a monster engine that has to pull a big load for long periods without overheating or wearing out in short order is a different science.
Besides It would be cool to have a sleeper vintage Mopar MH !

4.25 seems to be the max stroke with out oiling mods. What I am not sure about is the rod length effect/issues as related to dwell time , heat dissipation , piston pin height , piston skirt wear etc ....
Heads for a torque monster don’t need to flow like a drag engine IMO... but a set of modern alloy heads has closed chambers for quench and dissipate heat better . Which means you could up the compression a bit to 9.5 range and still use mid grade fuel.