Thank you ALL very much for sharing your thoughts!
I agree, the 454 V8 n a 345 classic is allways a "guzzler", but i still do not understand this significant difference between the trip in Amerika (8,5 mpg) and the travels on the roads here in Germany (5,5 mpg...!
While i understand, the open roads in Amerika are much easier and better to drive, then the small roads here, i still "abused" 5,5 mpg on a freeway trip by night from Cologne to Hamburg (about 280 mls). I was @ a cruisespeed of 55-60 mph, engine was @ 2600-2800 rpm.
Anyhow, if you want to play, you need to pay!
Changing the engine is not an option, she runs PERFECT, i love this wonderfull deep V8 music from my Banks-system
The gearvendor overdrive could be an option, but not for now.
I will switch over to an IMPCO lambda controlled LPG system, with a capacity of 100 US gallons. I will remove the "bathtub-like" gasolintank, and install instead a 30 gal. "Emergency-tank". The free space will be used by 2 giant Propanetanks!
I allready bought a propanekit for my generator, i need it, because the cab AC is to weak to cool down the rig on the road! Thank you for the link to Nash-fuel, i knew him allready, it is a reliable and "good" company!!!
One last question:
If i decide to install a new or maybe used TBI intake kit, is my BANKS system still "up to date"? I bought it exspecially for this model, it is a dual pump carburetor now.
Allways happy travels and happy Airstreaming, once i a able to post some pictures (sorry Peter, you explained it to me, but i am a computer dinosaur!), i will show my beauty here in Germany
If anybody is on the forum from Germany, or at least from west europe, let me know, we could share some expiriences!!!!!