Best mpg for 200 i6 manual 1966 mustang

[wsa111]

The EFI system will cost over $1000.0
You could switch to a carb with no spark control valve & install a recurved DS11 or a HEI distributor.
Take a look at my distributors in the small six for sale section of the forum. Bill wsa111
Contact me if you have any questions.

 

[xctasy]

35 mpg at 45 mph average in the Mobil Gas Total Economy Run with Ak Millers modified California 200 1967 Mustang fastback with 3 speed TopLoader and 3.20 gears. With a 39% power boost over the stock 115 hp gross rated engine.

"Horsing Around with the Mustang Six Index - Comet Central
https://www.cometcentral.com › tech
"

Ak Miller "

Horsing Around with the Mustang Six Index - Comet Central​

https://www.cometcentral.com › tech




In answer to requests for performance information about 6-cylinder engines, Performance Corner presents "Horsing Around With The Mustang Six," by Ak Miller, ...

Horsing Around with the Mustang 6 Page 4​

https://www.allfordmustangs.com › classic-tech

PDF

"
About this time, our local hot rod club was having an annual economy run and we decided to enter the little Mustang six -not knowing what it would do. Since we had changed the exhaust and carburetor, we were ready to accept almost any figure. Much to our delight, the Mustang registered 35.9 miles per gallon per 200 miles of Southern California coastline. Now before you call me a liar, let me explain that 50 pounds of air was used in the tires (for low rolling resistance), and coasting was allowed whenever possible. The overall average speed was 45 miles per hour and the gas tanks were sealed. The nearest competitor registered 27 mpg. The cars were all carefully inspected for obvious infractions such as added gas tanks. etc., and when the final results were in, The Mustang was able to keep its reputation as an economy winner while performing with 90 hp (at the rear wheels), compared to the 65 hp it started life with.

 

[chad]

cometcentral: in Horsing Around - "However, there are scores of six-cylinder lovers who come up with the question, "How do 1 get just a little more power and what will it cost me?" Not heard in the current garages I perambulate 59 yrs later. "Give me all I can get, damn the expense" is more typical. 8^0