318 or 360

MOPAROFFICIAL said
318s are known for 21/23 miles per gallon.

Great lil v8. If 300hp/350lbs is what you need...that's the motor.

I had a D-200 w/ a teen... she didn't get much MPG, but the Mother would really tear down a house and drag it off! And roll the tires! BRUTAL FORCE!