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Author Topic: Rejetting a 2V carb for fuel mileage  (Read 1443 times)
danford1
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Posts: 87


Location: White Lake, Michigan

« on: May 30, 2014, 11:48:15 am »

I have a 66 Fairlane with a stock 289 2v with C4 and 2.80:1 rear end. It gets 18 mpg on the highway.
I'm going on a 3200 mile trip. I want to re jet the carb leaner for better fuel economy. I'm not concerned with tire smoking power...
It has a stock Ford carb with a C9ZF-G tag on it so it must be from a 1969 or newer car. I see it has screw in jets but haven't pulled one out yet.
Do you know if they are the same thread size as Holley jets? I have a full array of those...
If not  where can I get new jets? If they aren't available I'll solder up the hole and drill it smaller or pack good old JB Weld into the holes and drill that.

I already tried inflating the tires, advancing the timing, coasting down hills, driving an egg under the accelerator pedal etc. I think now is time to down jet.

Danford1
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Those who say it can't be done should not interrupt those that are busy doing it.


Dart 376 SHP block, 4.155" bore, 3.47" stroke, Woody custom cam, TFS 11R 205, ported Vic Jr, 750 mechanical carb. 1 5/8" Hedman headers. 517 Flywheel hp, 498 Flywheel tq.
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