MPG

[Custom91w300]

I a read the following on Wikipedia about my engine, a ford 300 inline 6: "the 240 and the 300, no matter the application, used a single barrel Autolite 1100/1101 (or Carter YF/A) carburetors until the introduction of Electronic Fuel Injection. With proper gearing, many F-trucks and Broncos are able to achieve over 30 mpg with these carburetors, when properly tuned. This was heavily used by Ford's advertising campaign (some television advertisements and written literature even claimed 30 mpg), since the V8 engines in these trucks rarely achieved over 14 mpg. Modern rebuilds are possible to reach 40 mpg in some cases."

Now I have fuel injection since it is a 91. Any chance I could tune it to anywhere near 30mpg? If so, please let me know what I need to do.

 

[Bully Bob]

Short answer..., NO ..!   Injection systems will give you the best MPG.

Of course, a proper tune-up will give you optium performance.  These trucks are heavy & flate faced..!

They weren't made for great MPG.

Those engines (mentioned above) were not likely mounted in a full sized Bronco. (assuming those stories were true)

 

[Seabronc]

@-)

I have serious doubts those stories have any basis in fact.  Most carbed FSBs are locky to get 12 highway, a rare few hav gotten up to 17.   If it could be accomplished, It probably could only be done with special gearing, removing all unecessary weight (including seats, tailgate, doors, cap, maybe even the hood), selecting a particuar speed and driving on a smooth track B) .