loooong ago I had a 68 caddy winter beater with 472 that could eake out 8 mpg if I was easy on the throttle. good thing I didn't have far to drive to my min. wage job!
Reminds me of that '74 Sedan DeVille I used to own.... What a hog!!!! ***le said it weighed about 5600 pounds....
My Falcon is routinely over 30mpg. Well, if traffic is actually moving, and that is with the carbureted engine. The engine that I have on the stand in the garage has full closed-loop digital engine management, including spark control. I will put that in as soon as I get done fixing the damage from a texting teenager. It was tested at 199hp, and 247lb-ft, which should be enough to motivate 2460lbs quite nicely. The car already has a 6-speed manual transmission, with the top two gears being overdrives. The rear gears are spec'd to work out to be the same as a 2.56:1 set, if it had a 1:1 top gear. Efficiency IS power. If you really want both, you won't be able to discuss it on this board.
10 year old thread.......kewl! Do***ented 30 mpg hwy when this motor/trans was in my Mustang. In the 300 hp range too. Now it's in the roadster that's half the weight of the Mustang. 35+??
Many years ago I had an El Camino with a stout 327 4sp. 4:11s. It got 10 mpg. I got the bright idea of adapting Cadillac 4-6-8 valve gear onto it, but before I did I removed the rockers and pushrods from four cylinders. It got 12 mpg. I put it back the way it was.
Back in the late 70's I had an off topic Chevy Monza with a 262 cu. in. SBC that got 33 mpg with a 4 speed. I put an Erson RV cam in it and a 450 Holley Economaster carb and an SP2P manifold. It would out run my brothers 350/350 Camaro 2 bbl. I often wish I would have harvested the 262 and 4-speed for an early 30's hot rod, but you know, times move on...
Don't bet on it! I've got a way off topic 02 Zo6 that I have driven to Oregon a couple of times on the I-5 corridor and got almost.... not quite 30 mpg. 62 mph taching 1600 rpm
I don't doubt it. Modern engine designs, and complete digital powertrain management systems make old-school folks look like chimps, bashing rocks with sticks.
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