LS Swap MPGs_What're you getting?

[Sean C]

Originally Posted by BR3W CITY

~380rwhp/~450chp w/ my heavy 4l80e,12bolt, and 15x12 rears w/drag radials (yay rolling resistance lol)

In my 66 I get about 13-15city and 17-20 on the freeway

If BR3W CITY is putting down 100hp more than I am, and getting better mpg, something just isn't right! Now if I had 400awhp and was getting my current mpg, I'd be fine with it, but getting crummy mpg with average power gives me a headache haha