I have a 1955 Ford Customline 2 dr. with the 272. Using the later distributor and 57 manifold. Running a jetted down 600 Edelbrock. With stick and overdrive and 4:89 gears. Got back from Montana and got between 21 and 22 mpg.

could you share the number of the combination of jet/metering rod you are using?

My 57 Ranchero has a +.040 312  with an Isky RPM 300 cam, late style magnetic pick up distributor triggering a 4 pin HEI module, 3 speed overdrive, 4.30 rear gear and a 735 cfm Holley with stock jetting on a modified B manifold. My odometer has been verified with a GPS. I'm getting 16.5 mpg on 89 octane combined city and highway.....includes 'getting on it' on a regular basis.



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Did you mean 3.89:1 rear gears?

Lorena, Texas (South of Waco)

My mistake, 3:89 gears. Sorry.

Have the carb off now building new motor. Will check jets and rods and let you know. Have run this set up about 10 yrs seems to work great.

The jets are .086 primarys and .090 secondarys. Used 6755 metering rods and looks like orange springs. Hope this helps.

Yes, Thank you! If I might ask you one more question, What is the model number of your carb stamped on the base?

The carb is a 1406.

Thank you. I asked because that combination is in the tune up chart for a 500 CFM carb. You never know what might work until you try it. Thanks for the information.