mpg on my 340
so when I am reading all those numbers.... why do I have such a bad milage ? 340.. 727 and 3.23... TQ carb..What is the secret ?? Greetings Juergen
And no...I don´t jump in the gaspedal hard !! the 11 mpgis with 55 -60 mph on the autobahn....
That's the million dollar question.
What Darthomas said, and
There are so many factors, it would be a book to try and answer that.
The biggest factors are RPM, and engine efficiency at that RPM, and load. It's pretty simple really. Light weight, low rpm and lean running. Trying to marry those three is when things go haywire for a performance oriented combo.
NO1) lighten the load, reduce friction, reduce wind-resistance..
NO2) Lower the rpm
NO3) Build a,small,efficient,lean-running engine.
Oh wait that's every manufacturers recipe for a modern EFI FWD econobox!
Well that's no good for a hot 340, in a performance E-body.
My
guess is your engine is not as efficient as it could be. Perhaps your compression is down or the cam has long ramps, or the tune is just not in it yet.
The 3.23s and the TQ are keepers.As is the Chally, of course.
Loc-up TCs are usually good for about 200rpm at 60mph, and Manual trannys are usually good for an easy 10% better mileage, which is partly why I have an M/T.
