1966 Mustang, Inline 6 cylinder, MPG boosts - Page 2 - Ford Mustang Forum
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i dont know about that fuel saver thing. seems pretty gimmicky. plus he would have to put a snorkel system on there to get the full affect.

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1964 1/2 Mustang (Teal Green), Ford 302, Bored .030 over, 3/4 cam, Edelbrock Performer 289 Intake Manifold, Edelbrock 650 CFM Carb, Hooker Headers/Collectors, 2 1/2" Exhaust Pipes, H-Pipe, Summit Glasspacks, 15" Magnum 500's, Cooper Cobra 215/65 front - 235/65 back, Summit 3 1/8" Tach w/ Shift light, 105,000 Original Miles On Body, 2500 Miles On Engine, Interior and All Chrome/Decals are Original and in Great Shape!
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Quote:
Originally Posted by .boB View Post
In 1966 there were only two differentials installed in the Mustang. I6 cars and most V8 cars got the 8". The 9" was a special order for the V8 cars. I've never heard of a I6 car with a 9" rear. LSD was a factory option available for both rears, and cost $42. This 8" rear was installe up to the '79 model year.

This rear end is very differant than the 7.5" and 8.8" available in newer Mustangs. The 8" and 9" have a removable carrier. Changing the center section only takes a few minutes. well, maybe an hour. There is no rear cover.

The 7.5" and 8.8" are an integral carrier design. I think the first one came 1980 or so. They are a completly differant design, and no parts interchange. Changing the center section is a pain in the neck.
No, the 6 cylinder Mustangs did not come with an 8 inch, at least mine didn't. It's a much smaller and weaker unit which I've been told is a 7 1/4.

Here is a picture of one beside a 8 inch Ford.
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*66 Coupe / "Bad Candy" / CandyApple Red / All original including 289, C4, bench seat, and drum brakes.
*66 Coupe / "Agent Orange" /Tangier Orange / Converted to V8 specs with 85 5.0, AOD / 57 Fairlane 9 inch , and 17 inch Bullitt rims.
*69 F100 / "Mean Green" / 1973 H code 351c / FMX / Ratty "Beater" truck
*55 Chevy Bel Air / 4 door / 265 v8 / Powerglide / Anniversary Gold
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14mpg in the city isn't too terrible.

My '66 V8 gets about 18 to 20 on the highway, but bear in mind those of us with orig. transmissions don't have overdrive. I keep the speed at 60mph, maybe 65. If I go 70, the fuel economy drops off pretty fast.

Just for comparison, my '90GT gets about 24 hwy and about 13 to 15 city. So you're really not too far off. As mentioned above, keep your engine in tune, your filters clean, and your wheel aligned, and you will be getting about the best mpg you can get.

Top Ten Fuel Saving Tips - Get better gas mileage, improve fuel economy, get maximum MPG

1966 289-2V C-4 Convertible. 2nd owner, resurrected rustbucket. Factory console and power top, conversion to P/B with dual res MC.

1990 GT 25th Anniversary 5.0 AOD Convertible. SOLD
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MSD stands for Multiple Spark Discharge. It creates more efficient combustion, meaning less fuel is needed. Should see 1-2 mpg or so.
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Quote:
Originally Posted by 66mustangguy View Post
there is this fuel saver/mpg producer. its called the tornado.ill put a link to a page that will tell you about it. it gives you 28% mpg better gas mileage.

TornadoFuel-Saver.com Home
this is a joke... these do not work, and would provide more of a restriction than anything... its the new snake oil... I promise you will not see one iota improvment with that on your car..

66 Mustang Conv. 289/C4 resto-mod with shelby hood and grill/ white on black..
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Until I see good test results in Mustang Monthly or another Mustang mag, I think it's a hoax.
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