Re: Most bang for the buck - engine wise
The extra money it will cost to swap in the TBI 5.7, will buy a lot of fuel. I feel a 360 would be a good swap, and bolt in, If you feel you really need FI, you can get an aftermarket kit for around $1000. My 401 gets 10 MPG on the highway, turning 35 inch tires, and with 4.89 gears, close to 3500 RPM. Gas milage on the trail has turned out to be a problem. I will use 20 gallons for a full day of wheeling, and I only have a 15 gallon tank, so I carry a 5 gallon gas can with me. I have cut it close a few times. IMHO, you can't go wrong with AMC V8 power, a stock 360 will put out more low RPM torque than a stock TBI 5.7, and a 304 really won't be that far off either, and you won't own a SHEEP, Chevy + Jeep = SHEEP, because it sure won't be CHEAP.