SuperCharger to HEMI Transition?

[UselessPickles]

The biggest problem is the automatic transmission-- the torque converter is energy sink...

It's not just the auto trans. Manual trans produces similar dyno results. And as far as real world acceleration performance, the auto actually wins because it shifts faster.

The torque converter is not the source of the energy loss because it locks up completely at some point. At low road speeds, the torque converter is even a benefit because it lets the engine rev up to about 2500 rpm and actually multiplies torque a bit. Better torque/bower than if you were to slip a clutch at the same rpm.

I still think the manual is more fun though

I'd guess that the source of the loss is simply the heavy drivetrain components (axles, driveshafts, components in the transfer case, flywheel) with high moment of inertia. The flywheel must be quite heavy. I drove a loaner Caravan with the 3.6 pentastar, and it revved like a race car in neutral with a throttle blip compared to the Wrangler.

Before making the swap I spoke with Arrington Performance and Southern Hot Rod who both can get you to 400hp at the wheels with some limited warranty.

400 hp at the wheels with the broad torque curve of the V8 would just be insane. And probably insanely expensive.