Gas Mileage...

[Digital Salmon]

Howdy,
I'm not sure if this is the right spot to be posting this topic, but here we go anyway. I've been searching the forums all morning looking for gas mileage info. I was suprised to see that most of the topics I saw people were maintaning at least 18MPG and at best mid 20's. So, my question is:

You guys all have these really nice, streamlined, 2000+ Silverado's. If I were to do an LS1/LT1 conversion I'd be dropping it into a 73-83 Chevy pickup. It's a giant square, like pushing a billboard down the road. What could I expect my gas mileage to be? In one post a guy had a 67-72ish chevy and he said he was getting about 18MPG.

I'll be buying a truck soon, and am trying to plan out the best path. I've narrowed it down to either getting a full size chevy, 73-87, and doing a swap (if I can scrape togeter enough money) or just say screw it all and get an S-10 2.2L 4 cyl and torture myself for the rest of my days.

[GMCwantsLS1]

I'm getting better than 20MPG around town and some highway driving. Mine is one of those giant square bricks. The LS1 made the truck a good bit lighter and the OD trans help with gas mileage. It also doesn't do too bad at the track.