Flex Fuel in old truck

[edmartin]

This may be a stupid question, but I'll ask anyway. Does anyone know what type of modifications would be required to burn flex fuel, if it's even possible, in a 1969 Ford truck. It has a 300ci inline six and a one barrel carb. I'm asking because the price of flex fuel around here is about a dollar less than regular. Thanks for the help.

 

[tcartwri]

E15 or E85?

The first requires nothing, the second is very involved.

 

[JDgreen227]

Even if you can burnsE85 in your old truck, the savings per gallon on fuel will be offset by the lower mpg given. An example: My neighbor has a flex fuel Tahoe that delivers 14 mpg on gasoline, which falls to 10 mpg using E85.

 

[edmartin]

All I've seen available locally is e85. Is it less involved, or possible, to run a mix of regular and e85?

 

[tcartwri]

You will have to change the carburetor and any of the rubber in the fuel system.

The carbs are available now from summit and jegs.