5.0 Fuel Efficeincy

[flyboy_323]

My 95 GT gets about 22 mpg. I heard that a cat-back system really improves fuel efficiency. Does anyone know by how much and what other mods have really proven to improve performance and efficiency?

 

[BlueOvalStangGT]

I think the 5.0 is more fuel in-efficent then it is efficeint. Not sure about exact numbers but underdrive pulleys well help, if you can keep your foot of the gas. Weight reduction will help ya there too

 

[SmithCobra95]

wow u are really lucky if you are getting 22 mpg...i get about 16-18 on the freeway and abotu 12-14 in the city . if you start doing mods such as cam and other major things your mpg will go down quite a bit, but pulleys might give you a little better gas milage, but nothing significant.

 

[94_Teal_GT]

My GT averages 23.6-24.5mpg. I drive 63miles round trip M-F, mostly interstate with about 10-12miles of city driving per day. I only have the mods in sig, and 158k miles. FWIW I added the u-drives and 180* t-stat at the same time and gained 1-1.5mpg in average.

The Merc gets 22mpg on the highway with the A/C on!

 

[Car Nut]

I get about 22-23 on interstates and 15-17 in town. A/C doesn't seem to have any effect on mine.

Last year, on a very long trip using cruise control, I got 25.4mpg. Lots of cops the whole way so I stuck it on 74 and took it easy.

Good luck on the gas pedal idea! With each mod I add, that gas pedal goes down more frequently.

 

[flyboy_323]

Yeah, I know it's kinda a strange question in a stang forum because if we wanted fuel efficiency, we would be driving honda CRX's, right? But gas just broke $2.50 where I'm at and every little bit helps.... Plus, it gives me a good justification to explain to my parents why I'm spending money on modding my car out instead of school

 

[chefster]

i have 308s and get great milage ,under drives and an easy foot make aqll the difference

 

[HtownGT]

i get about 20-22 on the hwy. the pullies helped. and once i put on my o/r x-pipe i kept off the gas more bc i could hear my car better

 

[chefster]

injector cleaner and more air in tires

 

[95GTvert[bv12]]

i have gotten 27.4mpg on 3.73's cruzing at like 75-80...I usealy adverage 22mpg

 

[Joe 5.0]

It is VERY rare that I get less than 20mpg combined. I drive my car pretty hard, and on the expressway I cruise at about 80mph.

My mpg actually increased in the city when I went to 3.73 gears.

I got 26mpg on a 100% highway trip to kansas last year, cruise set at 75mph.

Its when you do a bunch of mods that your mpg will go down. Forced induction, stroker kit, H/C/I all will hurt fuel efficiency. More hp = more air = more fuel = less fuel mileage, but def more fun.

 

[DaveB]

Im not sure about city driving, but I get 26 mpg on the highway

 

[BlackVert]

i get about 17 on a mixture of about 1/2 city and 1/2 highway. on the highway i see about 23. but my adjustable fuel pressure regulator was bad and had a small leak which i'm sure didn't help. i just replaced it with a stocker today and filled it up. i'll know in about 5 days what my new mileage is.

then again, that is with 3.73s and my speedo is off, so the odometer is off too, so who knows if it is really 17 miles or not ...

 

[BlackVert]

i wonder how the 5.0s compare to the 4.6s ....

 

[Rootus]

i wonder how the 5.0s compare to the 4.6s ....

Running properly, both get about the same.

 

[viperos]

well, I got about 16mpg stock... then I did a O/R H, and screwed up my TB and TB Plate position, then got 20-22 city average... fixed the TB, now around 18-20 average city...

-if you're getting 22, just be thankful, and NEVER try to do better, you'll proably just end up hurting it accidentally

 

[NIN]

6speed and a conservative tune

 

[95GTvert[bv12]]

6speed and a conservative tune

6 speed weights to much and most conservative tunes richen the car up like a pig so it won't ping.....now a Geforce with the .54 overdrive (same as 6th gear) that would help and a lean tune

 

[super302]

Bottle of fuel injection cleaner once in a while makes a big dif. (only 99 cents at o'reilys) u/d pulleys and k&n air filter will help.
But most importantly, keep you foot off the gas pedal

My personal best is 21mpg in all city driving

 

[viperos]

you know, it's really funny, I had to dump my emissions controlls to get good gas milage, and I still pass emissions testing too

-why the crap did they put those restrictors and cats on there in the frist place?