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resurecting project RS car, fuel mileage?

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Old 08-19-2009, 12:06 AM
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Car: 1992 rs 355 TBI **swapped**
Engine: 80 Ford Fiesta GHIA dual carb
Transmission: 72 Cutlass S 350/350 3.42
Axle/Gears: s10 tq converter/stock rear gear
resurecting project RS car, fuel mileage?

ok, so the car is finally getting straightened out from the wreck six years ago... (t-boned, minivan, sad story) So the nitrous kit is gone, but the goal this time isnt ET, its a long distance cruiser that covers ground, and sips fuel. 2.73 gears? awesome.

(i am going to college at 26, and will have several sparsely populated states to cross going home and back)

Its basically a truck 350 motor, 194/203 .050 rv cam, 9:1 compression, TPI dual cat exhaust cruised at 110 at about 2800 rpms, light throttle as i recall

the truck motor in the light car feels mega torquey, and even in the mountains, the car barely notices hills, so as im about to dump 5 grand into making the old girl sparkle like new i ASK...

What kind of mileage are you guys getting with similar combos?
I have tuning equipment, and am looking to get the most cruise MPG possible. Anyone play with tuning to positive effect?

optimistically, im hoping for 15+ in town, and 25+ mpg at 70-80 (2000 rpm), even though i'll often cruise at 110-120 (3000 rpm)

in town i drive with a light foot,
am i in the neighborhood?

cant wait to have my fully restored, all stock appearing rs back on the road...
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