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iceracer
iceracer Dork
2/16/11 1:33 p.m.

Maybe it's got one of those secret carburetors that the oil companies missed when they bought them up

John Brown
John Brown SuperDork
2/16/11 5:10 p.m.

Probably has a clogged fuel filter and is running so lean that if a fly farts too close to it it will cause one piston to explode.

HappyAndy
HappyAndy HalfDork
2/16/11 9:36 p.m.

CComplete BS, or completly confused seller. My 70 stang w/302/c4/2.90 could get as good as 22 mpg durring steady highway cruising in flat land. I belive that the 289/302 (2v) could actually return better mpg than the I6 in some circumstances because the I6 intake log was so poorly designed. Possibly, in a perfect storm of ideal conditions, an I6 'stang with a manual could hit 25 mpg. OTOH, my friend used to have a chrysler new yorker with a 440 that could sometimes get 20 mpg on the highway; we called that car the "magic capet".

mad_machine
mad_machine SuperDork
2/17/11 9:14 a.m.

heck, my 91 saab with a 16v 4 and fuel injection only gets around 25mpg

novaderrik
novaderrik HalfDork
2/19/11 5:10 p.m.

i used to amaze my friends with my 76 Monte Carlo that would average just a hair over 30mpg if i wasn't driving it like the 19 year old kid i was at the time. i don't know how or why it knocked down that kind of mileage, but the engine was the stock 350 that i threw a $159 Northern rebuild kit at.. i got the smallest cam that was available with the kit and "upgraded" the stock cast iron intake to an old Weiand intake with the stock quadrajet bolted to it with an adapter, it had some old crusty headers with a 4 foot chunk of 2.5" pipe off each collector with a $20 Dynomax Super Turbo muffler jammed on each pipe. it would idle at 400rpm in gear with 20" of vacuum and cruise down the road at about 1800rpm thanks to the 2.56 gears. just making a dual snorkel air cleaner and running some dryer ducting to the front of the car added a couple of miles per gallon to bring it up to the final 30mpg number..

even with the rotted out floorboards and quarter panels, it weighed 4200 pounds with no one in it and about a half a tank of gas on the local grain scale.

yes, i admit it sounds wrong and totally not believable- but it got an honest 30mpg on more than one occasion (the few times when i had enough money to actually fill the tank) and i could drive seemingly forever on $5 of gas that cost right around $1 a gallon. it also did great burnouts and totally smoked a friend's 351W powered 79 Mustang in a few backroad "speed contests".

the weird part is that same engine and trans would only get about 23mpg in the '80 Malibu it was in after the Monte, and about 15mpg in the 4 speed/3.55 geared '70 Nova it was in after that.

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