[95ponygt]

I have a 95 gt I just bought. I want it to have 300+ horsepower.
Will my gas milage be affected by replacing intake and heads and everything else?

[EZBNME]

Not likely for the power level you want. Power is not increased much at cruising rpms over stock. I still get 21mpg interstate using a 3.73 gear. I use AFR heads, 10.5 CR, Holley intake, 30lb injectors, and a 575 lift cam. Compression increases efficiency.

[spyder]

gas mileage is all in the tune. i heard of guys with 72 pound injectors on a huge motor getting around 20 mpg....

[JUSTNLX]

I have twin turbo with 42 lbs injectors and got 27 mpg. My son's Mustang with heads intake, cam, T/B, meter, and 24lbs injectors gets around 23mpg.

Yeah it's in the tune, but it's more in the weight of your right foot.

[spyder]

"but it's more in the weight of your right foot."

ha, forgot about that that!

[410cougar]

you mean your not supposed to drive everywhere with the pedal placed firmly pressed to the floor. crap i knew i was doing something wrong.

j

[tkm]

Gas milage has too many variables .

Right foot and driving habits is the biggest factor.

But on the other hand more power requires more fuel so mpg shouldn't be a factor to this equasion.

If mpg is a factor then look into an econo box.

For sure if you drive like grandpa on a sunday cruise even a 600 hp beast will get good mpg's but why choke the motor to death by crusing it when it was made to run hard

The worst thing for a motor (any motor) is idling like taxi motors and police motors are really tired after 70,000 miles.

A little fact: 70,000 mile city motor = 250,000mile highway motor

[Smoked88GT]

I have a thred about me getting some crud milage...please give some input...I need help