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Old 12-06-2014, 01:44 PM
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Username1 Username1 is offline
Not sure how I got here.
 
Join Date: Dec 2009
Location: Orange County NY
Posts: 3,584
Hey EM; if yer ever lookin for the best bolt on mpg upgrade for that car, made by ford,
get a 7200, or 7600 VV carb. The 7200 variable venturi was all vacuum operated, and
the 7600 variable venturi was stepper motor electronic feedback carb. Both almost
easy bolt on directly to a factory 2bbl manifold. I think you got a 2 bbl right....?

I said it here before, I put one on my '73 351C mustang and went from 9mpg town
13mpg hwy, to 16 around town, to just under 21 highway.... 55, no floorin it off lights.

The 7600 uses a 5 wire 15 degree stepper motor and you can easily figure out the
wiring and set yerself up a in the car controller with a few IC's and some driver transistors.
Or go nuts and add a O2 sensor and make it semi automatic.... I did add the O2 sensor,
I had a Radio Control Plane servo running the spark advance, and I could
also set that from inside the car.... So easy to set it for highway or local spark.

It started quicker, ran better, had less spark plug problems, "dial-a-ping" was what I
called my spark advance.....

The only problem is that those carbs did not have a direct spark advance
port like a regular 2bbl, it was derived from a buncha other things..... Funny
that the 7200 would always just about to ping with no knock sensor that I knew
of on our '79 LTD wagon, and run good and get 26mpg on the highway....
It was the first year redesigh, but still the big one, not the mini-LTD.... 302 v8..

As an electronics person, you can easily set up the same stuff I did, once you find where
everything works best, it's just a matter of hard wiring a matrex to follow at different
speeds......

I guess if you wanted....... you could always get fuel injection......
and a 4 speed auto.......
.
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Last edited by Username1; 12-06-2014 at 01:54 PM.
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