I get 40 mpg out of a 6.2 diesel non turbo engine. I put the engine in a camaro, installed a 700r4 with lockup torque converter and put a 2.73 rear gear.

I love this car, it is fast, great fuel mileage on the highway and the most fun car I ever drove.



http://www.youtube.com/watch?v=m6W5D...IiTg9w&index=6