SP2P 2bbl worth the effort?

My first Magnum, a ‘79, had a 360 where I re equipped the 360 in the above fashion. Trap door air cleaner with a K&N filter, 600 AFB, iron intake, dual exhaust @ 2-1/4 off of the exhaust manifolds with an H pipe. The MSD fired the stock distributor.

The rest was a stock 904 & 2.76 gears rolling on 235/60/15’s. The best I would get was 20 mpg’s on the Hwy. But I did have an aerodynamic advantage as well as a weight advantage @ 3600 lbs.

Squeaking out more mileage out of the Ramcharger will be difficult. From where you stand now, anything you do for mileage will be minimal and small advancements. Some may not be cost effective.

Thinner & taller tires
Lower the vehicle
Lock up trans
Gear ratio change
Lighter vehicle weight
Less parasitic drag on the engine.
Oh! I forgot about a cam change.