Gas mileage 1990 mustang gt - Ford Mustang Forum
 
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post #1 of 11 (permalink) Old 04-22-2013 Thread Starter
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Gas mileage 1990 mustang gt

How can I get better gas mileage for 1990 gt 5.0?


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post #2 of 11 (permalink) Old 04-23-2013
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1) Make sure it is running at its best
2) use a light foot

The former is easier than the latter.
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post #3 of 11 (permalink) Old 04-23-2013
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What is good gas mileage?

If you want a fuel sipper then a V8 is not the answer.

Make sure your car is road worthy, up to date on the tune up items, tires are good and properly inflated and best said earlier "use a light foot".

2014 V6 Deep Impact Blue Mustang, Borla Type S, 2.73 (Uughh need 3.73)
1989 Sonic Blue Mustang LX Coupe, 349 ci,
392 rwhp 424 rwtq....Mustang Dyno
"There are three kinds of men. The one that learns by reading. The few who learn by observation. The rest of them have to pee on the electric fence for themselves." -Will Rogers-
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post #4 of 11 (permalink) Old 04-23-2013 Thread Starter
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Picking mine up today and can't wait to get it on the road


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post #5 of 11 (permalink) Old 04-24-2013
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Actually the Fox isn't too bad on gas at all. I had a 1971 Nova that was getting like 8 miles to the gallon and my father in law's Expedition wasn't much better. So when your light on the gas and getting 16-17 mpg then I'd say it ain't bad. Not to mention you can't run all this performance stuff and expect to get good mileage. If your worried about gas then take it easy most of the time then pound it once in awhile and you will be fine. There is no free lunch...performance=gas eating unless its a turbo 4 banger then it's slightly better. Just my 1.5 cents.
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post #6 of 11 (permalink) Old 04-24-2013
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Smile

I get like 12 em pee gees.but I drive my car like a race car

Beat 200k and brand new again.
91 gt, b&m Short shifter, upr sub frame connectors, upr lowering springs, electric fan, junkyard 3g upgrade, 255 walbro fuel pump. More to come....


"Why? Because Racecar"
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post #7 of 11 (permalink) Old 04-24-2013
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I'm getting mid to high 20's on the highway, mid teens in the city.

One of these days I'm going to get a Megasquirt and lean it out a little at cruise and shoot for mid 30's
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post #8 of 11 (permalink) Old 05-06-2013
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for better gas mileage do cold air induction exhaust and retard timing a little you loose a little from retarding timing but i was getting 22 mpg when my car was a daily driver now im lucky to get 14- 16 mpg dam 4.10 gear
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post #9 of 11 (permalink) Old 05-10-2013
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I just did regular tune-up stuff....plugs, wires, coil, cap and rotor, oil change. I had a long road trip and got 25MPG. Not too damn bad. New tires probly helped too

91 LX Hatch, DSS shortblock, TFS TW ported heads, ported/matched Explorer Intake, TFS stage 2 cam, pullies, MAC CAI, 24LB Inj, 255lph Pump, Adj Fuel Reg, 80mm Mass Air, 75mm TB, BBK Shorties, Bassani O/R X, Flow 10's dumped, MM SBC's, TKO, PRO 5.0, 3.73's, Aluminum Driveshaft, Moser 31 spline Trac-Lok, Centerforce Dual Friction, more goodies
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Quote:
Originally Posted by 5.0 a_ped View Post
How can I get better gas mileage for 1990 gt 5.0?


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Trade it in for a Prius?
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I get 25 on the highway and about 17 in town. Not bad for a heavy vert and 2.73 gears. I keep my foot out of it most of the time though.

1998 GT - CAI, trickflow intake, 3.55 gears, O/R x-pipe, flowmasters, short throw shifter. 145k miles
1995 GT vert - 1 of 36 5.0 Appx. 450,000~ factory motor miles *totaled/parts car* RIP..
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