When I built my 468 for my driver, All I wanted was TORQUE. WHY?
TORQUE moves things! Horse power is a by product of torque.
My driver weights in at close to 4300 Lbs. ( its a 70 FAKE SS Wagon).
My cam is in around 900 RPMs and is all done at 42 / 4400. Thats just fine, WHY? With a 700R4 and a 3:07 rear gear in my 12 bolt, I cruise the wagon at 75 MPH and the 468 is spinning 1950 RPMs. " AND " 20 MPG on the I-State.
Tires are 225 X 70R X 14" red lines. I have had this combo for 44.676 miles.
Is it a DOG out of the hole, HELL NO,,WHY?
The 700R4 has a first gear of 3:06, My 4300 Lb. wagon will burn the tires down from a dead stop. When you punch it down at 75 MPH, It goes into Third and goes into Fourth around 105 / 110. I dont have the Ba!!s to keep it down on the floor.
For me " BIG Torque engine VIA, Motor Home Cam, equals very good mileage.
I plan on ,,,,,,,, NO CHANGES with my driver.
P.S. mileage in town is not real good, WHY? The first and second gear in the 700R are deeper than a 4 speed.
Do what makes you HAPPY !