Originally Posted by Tjkeis
Is there any 8 cylinder egines that doesn't waste a lot of fuel? I have a 65 rambler 440 and want to do a egine swap.
Small displacement is the key here, as long as it has sufficient torque to move the vehicle efficiently. In other words, you don't want to have to run the engine at heavy throttle settings under normal conditions.
The 4.3L Chevy RPO L99 "Baby LT1" engine might be a decent choice if mileage was a primary concern.