[toroflow]

Well, speaking from experience, I have a 1979 K20 Suburban 4x4, and its 400 engine was real tired (over 200K miles) and was gettin about 7 MPGs. I bought a good running used 305 from a 1987 El Camino (carb) for $200, put it in the Sub, and sold the used 400 engine for $300. So I made $100. AND, my fuel mileage went up to 13 MPGs on the road, and about 11 in town. Sure, it doesn't tow things very well, but who needs to blast up hills at 55 MPH while towing, when 40 MPH gets you to the same point, albeit a little later, and saves you money??