Gallons Per Mile, Post up or die!

[Muddin_Mavric]

83 k5
stock 305 140,000 miles
headers, dual 2.25 exhaust with flowmaster 40s
edelbrock performer 600 cfm carb
stock 700 R4 tranny
stock t-case
10 bolts, stock gears
33x12.5x15 Mts on stock rims
2" of lift.

10.5 MPG (corrected for speedo error)last time i checked. Im to scared to check anymore /forums/images/graemlins/eek.gif

 

[hawkeye649]

Yea, but at least your truck is cute. /forums/images/graemlins/thumb.gif

 

[mudjunkie 82]

82 Chevy Short bed
Merlin 3 race Block-540 cubic inch 1000+ HP
Merlin- bill Jenkins pro stock heads
2.30 intakes,1.88 exhaust
manley extreme duty valves
compcams pacalloy Springs
Crane gold rockers with stud girdle
Compcams Blower cam-special grind
J/E blower pistons 4.500 bore
Carillo rods- Cleavite bearings
Callies 4340 Crankshaft
Moroso billit oil pump with 7 quart pan
Mooneyham 12-71 stage 4 Blower with blower manifold
14MM blower drive
Twin Predator Carbs
msd 7 ignition
turbo 400 trans/205 transfercase
dana 60 front/Detroit locker/35 spline/4.88 ratio/Cross over steering- AGR box/ 8" Superlift Springs/

14 bolt/FF/ Detroit locker/4.88/ disk brakes/ ORD shackle flip- 4" superlift Springs
weld outback rims 16.5 x 14 rims with 18 x 39.5 boggers
As far as gas milage=poor but who cares, It cost a little loot to play /forums/images/graemlins/thumb.gif

 

[1-ton]

[ QUOTE ]
You're doing better than me...

1991 V3500 crew cab SRW (see sig for specs)
170k
89 octane

I get a crispy 8~10 around town.

[/ QUOTE ]

As long as I am not in a lot of traffic, idling away at stop lights, my MPG averages about 12, but if I get heavy on the throttle I can get it down to about 7 MPG.

I remember my 1970 SS Chevelle (402 CID, tunnel ram, and dual carbs) would get about 600 Ft. per Gallon when I stomped on it. /forums/images/graemlins/cool.gif

 

[climbingmadman2000]

1973 K5
195k
New (15k) GM Goodwrench 350
Rebuilt Quadrajet
K&N air filter and open element box
Stock Points ignition
Edelbrock performer manifold
Headers
Stock TH 350
Stock NP203 TCase (full time) and axles (3.73's, I think)
31x10.50 tires
11.5 mpg freeway, not corrected for minor speedo error
If I get on it at all I'm down to 8 or 9mpg

Future mods: Electronic ignition, new exhaust, perhaps part-time conversion, mild lift, 33's... /forums/images/graemlins/weld.gif

 

[k5redneck]

81 drw
454 with a carb that needs to be rebuilt
sm 465,205
d60,14bff
4:10 gears
235/85r16 rear tires
245 front tires(dont ask)

and about 6mpg if im nice to it but its my first bb so i enjoy using my right foot alot /forums/images/graemlins/peace.gif

 

[Wingnutt]

88, stock engine (350 TBI) 155K miles, rebuilt tranny and 10 bolts with 3.42's running 33x10.50 BFG AT's.

When I got it I could just manage 14mpg on the highway with a leaky 'ol factory TBI setup. Now after replacing the TBI with a Holley TBI, installing a free flowing exhaust, making a dual snorkel air filter housing, and lots of chip tuning (by a third party), I got 18.732 mpg on my last trip at a steady 58-62 mph with the cruse on and the windows up. In town however, is another story entirely. I feel lucky if I can get 10 mpg. As soon as my newest toy (a prominator) arrives and I gain some more experience in tuning, I should be able to better that.

 

[70jimmy]

70 Jimmy
Worn 350 CI
350 Turbo
NP 205
HEI with accel supercoil
K & N
Edelbrock 600 CFM
Performer manifold
Duals Exhaust that is. Yes they are True
31 10.50 15's
No Lift

12 MPG highway way less around town.

Its gotten great mileage lately in the garage.

 

[jwduke]

1987 Chevy K20 Short box
305 V8, w/TBI
75,000 Actual miles
TH700R-4 tranny, rebuilt with Corvette internals 25,000mi on rebuild.
NP208C transfer case
Front axle D44HD (4.56 ratio open) Rear- GM14 bolt (4.56/Detroit locker & disc brakes)
M/T 35x17.50x15's Baja Belted

12mpg, but could be better

 

[dyeager535]

I always like posting up on these for some reason. /forums/images/graemlins/smile.gif

"1986" K5
355CUI
Vortec heads
Long tube headers (Hedman)
Mild Roller Cam
Full Roller Rockers
4* BTDC
Stock Firebird Air intake setup
Run 87 o-tang always.
1500k approx.
465
1974 vintage
NP205
1974 vintage
Front and rear 10b
3.42, gov-lock rear
33x10.5R15 BFG AT KO's

Running a VERY wrong timing curve, (1987 305 PROM) and thus far no adjustments made to compensate for all the other changes made to the engine.

Only long distance journey that didn't result in engine breakage (guess I can laugh about that now) MPG was 14. Thats approx. 150 miles freeway, maybe 30 miles of logging roads. Of course, logging roads are all up or downhill, at decent elevation, so that WILL come into play...overall I think that was fairly good at 70MPH for most of the distance, and the logging roads.

Same truck with a "basic" 350, q-jet, stock exhaust, everything else the same, got a best of 18MPG on a very flat road, on a cool night, at about 50-55MPH.