RPM's

Put a 2.94 suregrip in it. And put a stock stall rpm converter in there.
It will be a great highway power machine.
Long stroking it all the way to 145 or so. Cruisin at 70 (at 2650 rpms) will be like butter as your cam just came on torque. Cruising at 90 will also be like effortless velocity while your turning 3400 rpm.

At 2500 - 3000 rpms is likely your engine's peak sweet spot for mileage.

So your target driving speed and your gears should match with the cam curve and torque converters rpm stall area. A loose torque converter is just stirring oatmeal unless it is always operated well above the stall rpm so any time you are below that, you are loosing gas mileage and power there too. If you have a 2800 rpm stall, and you accelerate from 0 - 60 at light throttle where your rpms are from 1500 - 3000, the TC is just eating a pile of your energy as it hardly locked up during that time.


where you can have the best of both worlds is the 200R4 with lockup TC or a mopar unit of similar design. Then you can launch in an exaggerated (by old mopar standards) low gear and lock the TC when ever you want and have overdrive high top gear. Totally haul *** in every direction.
I cant afford an OD myself so I am going to try and compromise with 3.23 or 2.94 based on tire diameter and a low stall converter.