What's new
CK5
Register an account today to become a member! Once signed in, you'll be able to participate on this site by adding your own topics and posts, as well as connect with other members.

Gallons Per Mile, Post up or die!

H

hawkeye649

1/2 ton status
Joined
Mar 26, 2004
Posts
848
Reaction score
0
Location
New Hamp-shi-ah
Okay, here's the rules:
Please post the specs on your rig in non-enigma code. I am getting better at reading the cryptic signatures, but I'm not 100%. Even better, just copy the format that I'm using to list my specifications /forums/images/graemlins/thumb.gif
Anything that you think wll effect gas millage, please list. IE, ejector seats probably wont, but non-stock timing might.

Because I'm lazy and closed minded, please no metric readings /forums/images/graemlins/whistling.gif

1990 GMC F/S Jimmy /forums/images/graemlins/k5.gif
350CUI TBI
6* BTDC
Lager-than-stock Air Filter
Run 89 o-tang (the fruity drink w/ a kick) always.
130,000K
TH700R4
20K-30K old rebuild.
NP241
No rebuild as far as I know
Front and rear 10b
3.73, open carriers.
31x10x16 generic "all terain" tires. Really flat, really square, I.E. for the road.


16MPG mixed backroads and highway with front hubs locked, in 2HI.


Why do I ask? I'm trying to weigh all pros and cons of what lift situations I am thinking of....
 
14MPG

Stock drivetrain( engine 150K KM's, rebuilt tranny and 10B with 3.42's)
33" BFG AT's
When I bought it it was pulling 8MPG with the Puny 235/75r15's and no convertor lockup..... lots of tuning and maintenance have gotten her up to 14MPG
 
1983 chevy k20
350CUI g jet carb
6* BTDC
open element air filter
Run 87 o-tang
130k on truck
TH700R4 in drive
9k on rebuilt motor
NP208
4" suspention lift
Front 10b and rear 14bsf
3.42, gov loc rear open front
35x12.5x15 cooper SST front, dunlop mud rover rear


10MPG highway loaded or unoaded with speedo off (milage off also)
 
1967 gmc lwb 1990- 454 stock rebuild -edelbrock 750 carb-holley street dominator intake- edelbrock performer cam-msd dist 7" suspension lift th400-np208-3/4 ton axles 4:10 gears 35/12.5/16.5 bfg's 5-6 mpg but all 4 tires smoke!!! /forums/images/graemlins/histerical.gif /forums/images/graemlins/histerical.gif /forums/images/graemlins/histerical.gif
 
18+ mpg typical highway.

Approx 450 hp & 750 ft/lbs
Sub 15 second 1/4 mile times.
33" Dueler ATs with no lift.
7500 lbs curb weight.
13-15 mpg Loaded to GVW of approx 15,000

Range of almost 1000 miles between fuel stops on the interstate.


Want to know more? /forums/images/graemlins/whistling.gif




2002 DMax/Allison 2500HD loaded Silverado Crew Cab 4x4.
Stock except for 60 gallon tank and chip.
 
14 miles per imperial gallon or US gallon? /forums/images/graemlins/ears.gif

Imperial Gallon is 4.54 liters
US gallon is 3.78 liters.

My spec's:

1981 GMC F/S Jimmy
6.2 diesel

stock Air Filter
Run whatever blend of diesel happens to be at the pumps
230,000K
SM 465
200K-300K old
NP 205
No rebuild as far as I know
D60, 14 FF
4.56:1, open front, Detroit rear
39.5x15x15 Swamper TSL's. I.E. suck for the road.

16.3 miles per US gallon. /forums/images/graemlins/waytogo.gif

Rene
 
No but I would like to know more about the truggy. Are there any kind of gassoline considerations on trail-only rigs? Mines going to be a DD too, so just like every other souse I'm looking for a good harmony.
 
The 6.2 wasn't much in the go department, but got the gas millage.
I always wondered why more people don't run diesels off road. Easier to water proof, and torque!!!
 
85 K5.
2" Body lift
10 bolts, rear gov-bomb
3.73 gears.
Q78 TSL's (~36" tall)
700R4 w/shift kit
6.2 diesel-220K miles
-Rebuilt pump, fuel screw increased to much
-6.5 Injectors
-J-code intake
Heavy right foot.
average mpg=20.

same setup with 33" BFG radials that measure 31.5"- average MPG=23-24.
 
Nothing for the truggy. I kept it basically stock using off-the-shelf parts for easy repair and it will run fine on any automotive grade gasoline I can find anywhere. The TBI computer even compensates for altitude changes. That's nice considering I may go from sea level to 8k+ elevation from one trip to the next. I don't need or want tons of power, the stock TBI does just fine, what I do want is easy servicing with cheap parts and as robust as possible. Now if I can just get my suspension to be as robust as the drive train has been...

DMax/Alli trail rig? Not till they get MUCH cheaper, and they are not light or small...
 
1979 Chevy 1/2 4x4 pickup
406 CI 4-barrel, Edelbrock intake, headers, 3" flowmaster, MSD Ignition, Accel 300+ wires, 14" x 6" K&N Air Filter at 10* BTDC
10K old rebuild.
Run 87 o-tang for street, 91 o-tang for trails
120,000K
TH350
3K old rebuild.
NP203
5K old rebuild.
Front Dana 44 and rear 14bff
3.73 gears, front posi, rear locked
35x12.50x15 BFG Baja TA's (speedo is off)

8 MPG with street driving/freeways in 2HI.
2 MPG in 4LO romping on it in the dunes /forums/images/graemlins/peace.gif
I have worn 36" swampers that I'll run for dunes from now on, and am going to get a cam like rfguitar eventually. /forums/images/graemlins/truck.gif
 
[ QUOTE ]
The 6.2 wasn't much in the go department, but got the gas millage.
I always wondered why more people don't run diesels off road. Easier to water proof, and torque!!!

[/ QUOTE ]
Plus weight, smell, mess (common), and noise. /forums/images/graemlins/laugh.gif But I gotta say, Rene's was nicely done and I had no problems with it on the trail (smell, noise, etc.). It worked very well IMO. If I were doing a daily driver with mpg and longevity concerns with solid off-road capability, I would probably be looking for a turbo 6.2/6.5.
 
[ QUOTE ]
... I am getting better at reading the cryptic signatures....

[/ QUOTE ]

350QKN70020845635:11 /forums/images/graemlins/tongue.gif /forums/images/graemlins/cool.gif
 
350 5k miles or so
Cam, 15" vaccuum
quadrajunk
Performer, HEI
Dual exhaust
K&N
8*
NV4500
14" lift
4.10s
38" Radials

12 MPG

Dont know how much it has increased after I did the TPI, for now ill estimate 14-15MPG.
 
[ QUOTE ]
[ QUOTE ]
... I am getting better at reading the cryptic signatures....

[/ QUOTE ]

350QKN70020845635:11 /forums/images/graemlins/tongue.gif /forums/images/graemlins/cool.gif

[/ QUOTE ]

350 w/ quadrajet
K&N(crap)
TH700R4
NP208

4563???

5.11's maybe...? /forums/images/graemlins/1zhelp.gif
 
How can you have a quadrajet (nice off-road & onroad carb) and TPi? I can't remember what it stands for exactly, but I'm about 90% sure it's a form of fuel inFection...
 
1971 Chevy Blazer /forums/images/graemlins/k5.gif
400 CID Small Block Chevy
HEI with vacuum advance
Stock Q-jet with choke wired open
14x4" K&N open element w/ pre-filter
Always use 87 octaine
130,000 miles
TH350 trans rebuilt by me
NP205 T-case No rebuild as far as I know
D44/14BFF 4.56 open/welded.
36" TSL bias ply's on 15x10 wheels run at about 25psi on the street (when I remember to fill them).
Soft top /forums/images/graemlins/thumb.gif


8MPG hwy going 70mph Doubled it once following my budy's toy that has trouble going 55mph.
Got 12mpg with 1/2 ton axles and 3.73 gears.
 
1972 chevy blazer
427 Tall Deck Holley carb.
8" susp. lift (the other 10" is body lift and dropped spring hangers)
Stock 14"x5" air cleaner
87 Octane
75,000
was a TH350
NP205
Dana 60 & 14 bolt Full Floater,
4.56 & Detroits
44" ground hawgs ( they really measure 41")

10-12 MPG
 
You must log in or register to reply here.

Latest Posts

Top Bottom