What's your MPG?????

[thfonz98]

91 k5 blazer
350 TBI (stock)
700r4(2nd one)
both 10 bolts(stock, 3.73 rear i believe)
31x10.5x15 revos

total mpg: 14-15(50/50 town and highway at about 75)

used to get 16-17 on all season uniroyals before(original owner had them on it and they were cracking)

 

[K5MONSTERCHEV]

72 blazer
350
NV4500
4.10
38's and its in the air. (height makes a difference, espically when your as tall as I am!)

12 MPG when I went up to pinecrest. Havent had an all highway trip since ive done the TPI.

 

[RustyMule]

1975 K5
358 c.i. - 10:1 comp, Edl performer package
TH 350
3.73's
35 x 12.5 15's
14-15 mpg highway

I just towed with this tank across the USA and was getting 10 mpg average!!! That suprised the crap out of me.

 

[mtn. burb]

87 Suburban

350 TBI

TH400

39.5 TSL's

4.56

No idea on mpg, I have never checked.

 

[baldamish]

1975 k5
350 (smoking and on it's last leg) 4 barrel
4 spd manual
12blt 3.73's
33"
14.5 mpg

 

[PeteH]

so does anyone get at least 15mpg on freeway(besides desiel guys)..with 35s and up? is it even possible with torque and hp over 350?

hmmm what to do...I better be thinking bout gas milage before winter so tahoe doesnt seem so far away.
lets see smaller 35s
then run a 700r4 or something with overdrive
regear axles and/or transfer case
tpi or tbi
loose truck weight


yarg wish i could just do this and........n/m....damn ck5 always making me think bout my truck. and its almost 4 in the morn...you suck.

 

[RootBreaker]

Rig: 1978 Chevy K20
Motor: 1991 caprice police 350 (convert to carb)
Tire size: 17x40x16.5 hawgs (38.8 true)
Gear Ratio: 4.56
Miles Per Gallon: havent calculated yet but will eventually (hopefully this week)


One big item is what gears you need to run.... alot of people run or say to run 5.13's.... great for a trail rig... I built my truck to be a weekend warrior but under its own power to get out to the trails and come home... no trailering... I went with 4.56's as that was my stock gearing
got a d60 front and had to only gear the front (detroit both while at it)

I did however go down a highway @ 74mph.... 3000rpm's!!!!!!
I am definitely going to persue a nv4500 now.... or some kind of overdrive....

expecially since regular has just hit $2.51 and not stopping

 

[BranndonC]

Rig: 1973 GMC Jimmy
Motor: 1976 CAdillac Eldo 500 cid
Tire size: 37x12.5x16.5 SSR
Gear Ratio: 4.13
Miles Per Gallon: 0


i've never driven it

 

[bluehen]

Rig: 1987 Chevy K5
Motor: 350tbi
Trans: 700R4
Tire size: 35x12.5x15 BFG M/T
Gear Ratio: 4.56
Miles Per Gallon: 13.6

That was my last mpg reading. Last Monday I installed a new soft top. I'm curious to see how much difference if any it will make.

 

[Chaddy]

90 blaze

350 tbi

700r4

205

60f 14br locked with detroits 4:10 gears

315's

hmmmm about 11-13 mpg

 

[muddybuddy]

88k5

350 tbi with 125k miles, 2" rust hole in exhuast just after cat

700r4

10bolts with 3.73

35" bfg ATs

about 8mpg in town, prolly do a little better if it wasnt so tall (9" lift)
planning on going to 5.13s with the 3/4ton swap, so hopefully it helps city driving, i dont do much highway.

when my 350 dies, im going to price out a diesel swap. how much do you think it would cost to do a complete swap?

 

[4xcrazy]

'89 Burb
TBI 350 w/227k on it
700r4
4.10 gears in a front 10 bolt/rear 14bff
33" tires
and about 10 gallons per mile,,,,,

 

[79Beast]

'79 K10 w/8" lift and really cut fenders
355 small block with 268 degree cam advanced 4 degrees and
Edelbrock 850 cfm Qjet replacement
SM465 and 5.13 geared axles
44" TSL Boggers on Allied beadlocks @16psi front and 14psi rear
(cold pressure used for street driving)
I drove it to work one day and it took 11 gallons to go 100 miles.
For you math gurus, that's 9 MPG....not bad for a barn
capable of 80 mph.

 

[Greg72]

Rig: '72 K5
Motor: 396BBC
Tire size: 38.5"
Gear Ratio: 4.10
Miles Per Gallon: 7


Rig: '72 Burb 2WD
Motor: 350SBC
Tire size: ~27?
Gear Ratio: 4.10
Miles Per Gallon: 7


Rig: '64 Chevy C60
Motor: 396BBC
Tire size: 9.5Rx22"
Gear Ratio: 6.72
Miles Per Gallon: 4


Rig: '89 Carrera
Motor: 3.2L
Tire size: 205/55-16 & 255/45-16
Gear Ratio: 9:31 (3.44:1)
Miles Per Gallon: 22

 

[ratzila]

Rig: 90
Motor: 454
Tire size: 44" boggers
Gear Ratio: 5.13
Miles Per Gallon last time I drove it it was getting 7 mpg

 

[OffRoad]

88 suzuki samurai

1.3 L inline 4

5 speed (stock samy tranny)

3.73s

27s

30 mpg

but you could prolly outwheel me. (but my truck fits down atv trails )

 

[wildbilzrydn]

'72 K-5
355 4-BBL
SM-465
NP205
35x12.50x15's
3.73 : 1

7mpg city, 11-12 mpg highway, about $15 an hr @ 70 mph, running the hardtop. Probably less w/o the top or with the soft top on.

 

[Cmoe]

Motor: 1991 caprice police 350 (convert to carb)

Wasn't these an LS1 (with multipoint distrib. on front of engine)? How were you able to put a carb on it? Can you post pic's!


78 k5
Goodwrench 350 crate
TH350/NP203
3:08 gears ( Ihaven't Checked for sure or not, since a shop screwed up my 4:56 gears and Possi.
35x12.5R15 on 15x10
9 mpg with or without trailer...... on or off road/ freeway..... without my top I got better gas milage

 

[onlychevy6]

my old 78 blazer had
350 with edlebrock performer cam, lifters, manifold with EGR, 1400 Carb., roller rockers
Free flowing Cat. and Flowmaster Muffler
sm465
np205
6" suspension lift
35" BFG
12 bolt with 4.10 and auburn Posi unit
dana 44 with 4.10

Average was 14 - 15 MPG Highway and street driving 31 gallon tank

 

[big_truxx]

Heya all. Just taking a survey of the average MPG of peoples rigs and what motor/rig/tires/GR etc they are running with it.


Rig:
Motor:
Tire size:
Gear Ratio:
Miles Per Gallon:

89 burb 2wd 3/4 ton
6.2
metric equivilent of 32's
3.73
18mpg

soon to be a stock M1009 CUCV in my driveway