5.7 I finally made it through your entire thread on FBBO... Awesome, beautiful car, the grill is sweet...
Sorry about your luck with mpg. Those are depressing numbers for sure, I am gonna run 3.91 without OD, so i am worried about mine for now. Are you sure the converter is locking up? That is all I can think of, it would be interesting what a wideband would show.
I was wondering.the same thing on the gas mileage. I'm running the same gears as Joeboy with a 727 and i was hoping for 17 mpg.