What kind of gas mileage do you guys get with a 230 in that? I called ChevyDuty and a guy said 8mpg. Although I'm sure it'll be low, it shouldn't be that low. I've got an 81 with a 350 Crate and it gets about 9. I could be wrong, but how can this little 230 I-6 get worse gas mileage? Thanks,
