[britnjc]

I have thought about fuel economy with my s10 swap on my 50 GMC. I am goin to stick with the stock 4.3 ltr s10 motor which was getting aroun 19 to 20 mpg with the s10 body. I am not doin it for fuel economy though its just a lack of funds to put a 350 in it at the present moment. But the better gas mileage will be a plus until that day comes. I am not sure what a ecotec is your talking about but just a thought that can be done easily on about all TBI and carb motor without to much work is a Natural Gas conversion. Natural gas is a cleaner burning fuel and better on motor life due to lack of sludge build up from petroleum fuels. You keep about the same performance and it just cool to say you are burning natural gas. While petroleum gas was over 4 bucks a gallon here in alabama natural gas equivilent was under 2 bucks. I have not put it on any of my vehicles YET but its something to think about. I work for a natural gas company and our fleet rruck had conversion kits put on them. The only thing is finding a fill station that has natural has pumps. or you could just put bottles in the bed and carry them to a gas company or somewhere the like and have your bottles filled.