318 guys- you know your fuel mileage ?

[Dave6T4]

My friend, Dave, built a 1969 Coronet "WannaBee",with 318, automatic, and 2.76 gears. on long trips to Carlisle or Mopar Nationals, he said it consistently did better than 25 mph. on Canadian gallon (20% larger than U.S.) Dave is a mechanic, and very good tuner and racer.

 

[Unkle Krusty]

About 12 on a US gallon, running on 87. Stock 77 camper van. Stop and go drops the mileage a bit, we weigh 6600. On the highway we had a lot of drag from the overhanging roof.
I have made that part more aerodynamic efficient.
Engine and gearbox are out, back in over the next couple of weeks. We hope to improve to about 15 US gallon.
Shirley and I split the fuel bill, so my gas is half price, or we do 24 to 30. The best Mercedes diesel camper van does about 23. The older units are better. Sometimes I meet a 2 ton larger camper van with a 460 Ford. One guy claimed 15mpg. I think 8 would be more accurate.
New Ram camper van, or a used Mercedes is about $150,000 or more. We have spent about $15,000 so far, and we have many new pieces. Some parts like our fridge are more efficient, and we have beer inside.

 

[mopar 3 B]

13 mpg with anything on a 318 would be a call of with the hell did we do wrong. Not sure it can be blamed onto Fiteck.

 

[toolmanmike]

About 12 on a US gallon, running on 87. Stock 77 camper van. Stop and go drops the mileage a bit, we weigh 6600. On the highway we had a lot of drag from the overhanging roof.
I have made that part more aerodynamic efficient.
Engine and gearbox are out, back in over the next couple of weeks. We hope to improve to about 15 US gallon.
Shirley and I split the fuel bill, so my gas is half price, or we do 24 to 30. The best Mercedes diesel camper van does about 23. The older units are better. Sometimes I meet a 2 ton larger camper van with a 460 Ford. One guy claimed 15mpg. I think 8 would be more accurate.
New Ram camper van, or a used Mercedes is about $150,000 or more. We have spent about $15,000 so far, and we have many new pieces. Some parts like our fridge are more efficient, and we have beer inside.

12 on a camper isn't bad. My tool trucks were bricks and never got more than 6 with a gas engine. Almost 10 with a diesel.

 

[Sixpactogo]

The only 318 I have is in my 60 Dart Phoenix. It has the factory 255 hp Poly engine and a carter 4 bbl with 3 speed torque flite and 3:30 gears. I have not checked it lately but the last time I did it was close to 18 mpg highway miles. That was on regular 87 unleaded fuel which is no longer available in my area. I now only run premium 91 because it is all I can find without ethanol. I doubt it gets any better mileage but I refuse to run ethanol gas in any carburetor