TRIP—
DATE—
DISTANCE—
RPM / MPH RATIO—
VERDICT—
A stock 5.7L Hemi with the 8HP70 transmission cruises at roughly twenty-six engine revolutions per mile per hour — a number as steady as the crankshaft. When the truck is towing, the transmission downshifts to hold torque and that ratio climbs. We looked for it on every highway trip.