I am going to but a 350 390hp angine from enginefactory.com. I know that it will have crappy MPG but i am going to get a mpfi intake so that it is fuel injucted. What do u think my mpg will be with the mod and is the engien worth it? thanks

 

IMO if you pull 15-18 your doing good, I would guess 13-15 on the freeway if you have a overdrive

 

o, dam, i guess it would be worth it to get the ls1 because i thought that i would save some money putting that engine in, but it is worth it when u figure out how much i will save putting the LS1 in

 

mine gets 13 mpg on the highway. But it will haul ***!!!!:rockon: :rockon: :rockon: :rockon:

 

I got 28MPG on my LB9/700R4 combo... but it was on the highway, and there weren't many hills... and maybe the wind was at my back... it seems like a high number to me, is that normal? I guess I shouldn't get used to it if I'm gonna mod this baby