What's your fuel Mileage?
 

Just wondering how everyone was doing on fuel. So let us know what is your MPG and your setup. Thanks!

Re: What's your fuel Mileage?
 

I get about 5 to 8 in town that's with a sightly modified 350 with a junky quadra jet that's work wright very rarely also th350 and 373 gears

Re: What's your fuel Mileage?
 

why not swap it to a eddy and avoid probs?

Re: What's your fuel Mileage?
 

I had one but it was messed up by the past owner and was only getting 5 mpg on good day so got a rebuilt quadra jet and no luck couldn't get it tuned wright so I took it to a couple old school mechanics no luck it do good for a wile then next day it will bog down like crazy and spit and sputter, but I'm saving for a new carb so then I should be getting 8 or better

Re: What's your fuel Mileage?
 

getting about 9-10 in town with a 96' 355 vortec,has r/v cam, holley 750 double-pumper, and holley intake,

Re: What's your fuel Mileage?
 

Stock 454 with a TH400:

10 mpg on a good day.
10 mpg on a bad day
10 mpg highway.
10 mpg city.
10 mpg empty.
10 mpg loaded.

Did I miss anything?

Re: What's your fuel Mileage?
 

10 mpg is normal for a big block maybe 12 at best

Re: What's your fuel Mileage?
 

my 81 with a 502 gets abt 10-12, r/v cam and MSD ignition with 650 eddy, thats about it on that one

Re: What's your fuel Mileage?
 

~13-15 in the city if I pamper it. Lead foot eats gas.
Best of 19.5 MPG at 70 MPH

ZZ4 355+ HP, 2500 stall, custom 700R4, 3.08, 255/60R15tires. A ton of body, engine and weight reduction work. Torque baby!!!

Re: What's your fuel Mileage?
 

22 mpg on the highway; it's an 87 V6, 4 speed manual overdrive (I think it's a .70 or .73 overdrive) and 3.73 rear axle.

I haven't checked mileage around town.

K

Re: What's your fuel Mileage?
 

I do about 2 gallons per mile.. :lol:

No, but seriously, I haven't done a real calculation, but I can't be getting better than 10 mpg...

Mild 350, rv cam, headers, duals, 750 Edelbrock, th400, 3.73's...

I'll be switching to TBI in the near future. MPG's should improve.

Re: What's your fuel Mileage?
 

Best of 15.6 mixed driving. ~30,000 mile 1991 355, all stock with TBI, TH350 and 2.73's.

The winter that will be changing to a 5.3L Vortec, 4L60E and 3.42's.

Re: What's your fuel Mileage?
 

about 8 or 10 in town and about 10 or 12 on the highway

Re: What's your fuel Mileage?
 

i get 30 in town and 40 on the highway if i keep her under 70mph... in the 08 honda fit... lol... the truck isnt done yet :( so i dont know what i get with it !

Re: What's your fuel Mileage?
 

383ci, 750cfm edel carb, m21 4 speed, 3.42 gears and 28" tall tires. I usually average around 15-16mpg mixed hwy/city. Usually around 17 on the highway. I bet I could break 20 with an overdrive!

Re: What's your fuel Mileage?
 

Count me in, I get about 8mpg. 383/350/373gears. I wished I would have just saved for a 700r4.....:waah:

Re: What's your fuel Mileage?
 

i forgot to add my specs i have a 400 small block 350 tranny and 4:10 ratio

Re: What's your fuel Mileage?
 

Best of 11.9 MPG
Average of about 10.5 MPG
Mixed driving with majority around 50-60 mph

~5,000 mile rebuilt 1989 350: aluminum intake, 600 cfm edelbrock, headers, mild cam. TH350. Unknown rear gear. 28 inch tire

Electric fans coming soon!:metal:

Re: What's your fuel Mileage?
 

6.2 Diesel/700R4/NP208/3:42 pegleg

22 highway
17-20 city

Re: What's your fuel Mileage?
 

Yes - 10 mpg with the engine shut off and coasting downhill.

K

Re: What's your fuel Mileage?
 

7-9 around town last I checked. Have since changed my rear end and tires. I think it improved a little...I might be up to 8-10 in town now! :clap:
I have an old 350, super low 4 speed, unknown rear gears, on 245/60/15s.

Re: What's your fuel Mileage?
 

350 with RV cam / 700r4 / 3.42 gears
8-10 City
15 Hwy
Averaged 19 when I drove cross country drafting semi's

This is also with an 83 Suburban

Re: What's your fuel Mileage?
 

454 with Edelbrock perf rpm with Holley 750 cfm and headers, th400

8-10 MPG - If I beat on it, 4-5 MPG, maybe less. NASTY.

Re: What's your fuel Mileage?
 

And people ask us how we can drive them all the time. :haha:

Re: What's your fuel Mileage?
 

Around town, no hard numbers, it varies from descent to terrible, depending on which gear I stay in and how light or heavy my right foot becomes at any given time. On the highway, most I could get out of a 120 mile trip was 10 mpg. But, if I was concerned about mileage, I sure wouldn't have built this particular engine:)....671 blown and injected 383, manual/reverse TH 400 with brake, 4.56 rear with 31" tires.