Quote:
Originally Posted by Randy_the_Hack
While I enjoy the esoteric discussions out here as much as the rest of the community, I'm looking for practical information and advice that will help me improve the efficiency of my existing vehicles - an '04 Chevy Silverado (see my garage), and my wife's '07 Chevy HHR (another brick on wheels, IMHO).
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I've driven both. The HHR, of course, has some potential with the 2.2L - I4. I'd apply some aero, feedback, underhood, and tire techniques to that one.
The Silverado. Depending on your uses, a tapered bed cap like Big_Dave's design can help Cd. The rest is going to have to be technique or serious swaps: engine and/or transmission. Maybe tire choice and ride-height as well. There's no magic bullet here. It may come down to technique only. The best advice is to limit driving it, when you can.
RH77