My car is burning gas like a **** I was wondering if it could be my stall or my cam which is a 228/228 581lift 114:lob. I heard these stalls have really bad mpg. Any thoughts and any body have a 3500 and have bad MPG. I get around 110 to the tanke city. Any guesses are welcome. and the car is tuned

 

Have your tune checked. Is your converter locking up?

How fresh is this combination?

g

 

It does lock up and I had the tuner check it and he said it was because of the stall and he also said there might be soemthing else wrong but it will take time and a lot of $$$ to go through it. I might just go back to stock if I cant figuer it out. the engine is a rebuilt ls6 and it just has the cam stall and long tube header mod.

 

Get a new tuner, or at least another opinion.

I think your tuner is FOS.

g

 

Will Do

 

Bigger stall wont effect mpg that much if it's a lock-up. I was getting 20-21mpg with a 3500 lockup on the highway with 4.10 gears and with a crappy tune.

What exactly is your current mpg?
What was the mpg before you noticed it burning more?
When was the last time the plugs & wires were changed?
When was the last time the fuel filter was changed?

Just some other ideas. Might just need a basic tune up on the car.

 

True. I was getting 25ish mpg in my Camaro with a 3800 lockup and 3.73's

 

I'm getting around 12mpg city and I did change the wires but I have not changed the plugs yet and I will try changing the fuel filter and see what that does. Can the plugs effect the MPG that much?