L98 engine with TBI setup
350 TBI injectors and 350 computer.
LT4 cam
Hedman Headers
Exhaust
K&N air filter

What kind of mileage should I expect? I got about 10mpg with my 305. So, I am hopeing for something a little better.

 

I think something is wrong with your 305. Have you checked your o2 sensor?

Steve

 

Actually, I have not. I do need to though...

I figure it is me. My old VW GTI got 10mpg too.

 

I get 12/24 just because I've got a heavy foot. Highway cruising even without EGR and getting 24mpg with 3.73's and an auto is pretty good I think. I know I can go more but I won't try until I've got the money for a wideband o2 sensor.