I have a 1969 Buick that I am trying to push the envelope on both HP and MPG. It's a very fun car, but getting MPG on a big 455 motor isn't easy!
So far I've converted to computerized FI, I have a 2.56 rearend, and a few other tricks. Right now, my next step will be getting a custom camshaft ground to be a good compromise between HP and MPG- my current cam probably has too much intake duration for an efficient burn.
In the past I've gotten over 19 MPG (hwy), and the car runs 11's in the 1/4 mile. Not bad for 4300# car. I consistently to break 20 MPG and hit the 10's, which I think is achievable with a bit more work.
Anyhow, I look forward to learning/talking about MPG.
Wewlcome bobc455! HP and FE don't have to be in two completely different cars. Those numbers are respectable for a car that heavy and a motor that big. I'm sure you'll find something here that can help you increase those numbers.
Horsepower is how hard you hit the wall, torque is how much of the wall you take with you.
Depending on what kind of FI you're running, it might be easiest to have something like MS that can switch between fuel maps on the fly. You can run around town lean, and switch to a richer map at the drags, provided you don't do this already.
Originally Posted by FormulaTwo
I think if i could get that type of FE i would have no problem driving a dildo shaped car.