M P G

[Brauap]

Post what motor you have, modifications that may change the adverage mpg (tires, eninge mods, etc) and the adverage MPG you achieve.

I.E.

(Vehicle Type, Engine, 2 or 4wd)
(Modifications)
City: ??
Highway: ??

I am very courious!
(Mostly on small block V8's and V6's)

Thank You!
Colton W.

[Hondamaster5505]

Well, just to get it going, I haven't actually calculated it yet, but estimates are from other firebird owners.

Motor- 5.7 LT1 V8
Transmission- 6-speed manual

Average city- 16mpg
Average highway- 24mpg

Not bad for a sports car;)

[gtt416ex]

1984 Dodge Ram 1500, 318 V8, 4wd
2.25" exhaust with a turbo muffler
City: 12 MPG
Highway: 15 MPG

:macho

[LTandRaptorider]

2003 Chevy Silverado 2500HD
6.0L engine, no mods.
4x4
MPG City-10
MPG highway-10.5


:ermm: :mad:

[Fred55]

2006 Impala SS all stock
5.3L LS4
City:17
Highway:anywhere between 24 and 30 depending on how often it switches to V4

[fastredrider44]

2000 S10 ext cab 2wd 5sp 2.2
24 mpg driving it like you stole it, 28 is doin good though.
215,xxx miles:eek2:

1997 Z71 Ext cab 350 32x11.50 mudders, Two thunderbolt turn downs

14-15 citry
16-19 Hwy depending on avg speed.

Saw a lot of 12 mpg in the winter. Gas mileage always seems to go down in the cold months.:grr: That's also not pulling anything and keeping my foot out of it.

I also saw a lot of 25-26 hwy out of my 2wd 4.3 S10 5 speed before I sold it. Auto S10s don't tend to do very well.

[trx450r1989]

(dodge 2500 v10 5 speed manual 4wd)
small lift, 4 10 gears, exhuast, headers, kandn
City: 9
Highway: 14

[beaker1214]

2007.5 Chevy 2500 HD Duramax
6.6 Turbo Diesel

City -17
Highway 19-20

I take it pretty easy to get those results, I can completely change those numbers by digging in the peddle...Can't wait to get the DPF taken off of it and a new exhaust...millage should go up 1-2MPG after that.

[CJM]

1996 Toyota T100 x-cab
V6 3.4L
4x4
14-16 city
17-21 hwy

02 Ford E250 workvan
5.4L V8
2wd
10-14mpg city (depends on how its loaded and how I drive).
15mpg maybe on hwy
This is a heavy work van loaded to the gills with equipment and batteries for AAA roadside service. It pulls the load great but MPG really suffers.

Past rides:
93 Toyota Camry
3.0L V6
18-19 city
23-25 hwy

92 F250
Inline 6 300 cu in, 5 speed
2wd
15mpg city
18-20 hwy
Wasnt fast and got ok mpg for a HD truck, but man it could haul with the inline 6

[honda300EXtreme]

1997 F150 (reg. cab long bed)
4.6L
4x4
headers, dynomax bullet muffler, k&n intake, edge programmer and 33's

16 if i baby it.
14.5 normally

[elmer91]

1998 Jeep Grand Cherokee, AWD, with the cut out clutch thing froze up, so all wheels are always under power. 2" lift, 31" tires. 4.0 straight 6.

average is about 15mpg. dont do enough highway driving to determine highway.

[Rootar]

97 F250 7.3L- alot of work, bts tranny.
average 20-21, pulling my race trailer only 16-17, and pulling 12k pound toyhauler only 13-13.5


2002 Jetta TDI with 5 speed
worst tank 41.2 best tank 49.6 average tank driving normal 46.1

[destey]

Originally posted by LTandRaptorider
2003 Chevy Silverado 2500HD
6.0L engine, no mods.
4x4
MPG City-10
MPG highway-10.5


:ermm: :mad:

I have that truck, non-HD with the 6.0 and 5spd, 2wd, and I get 12-17mpg, depending on how much i get on it

try hptuners (www.hptuners.com)
mods are an ebay cold air intake and dual exhaust straight back.

you could try cams, gm builds those trucks gasping for air.

[coryatver]

I got a ranger 4 banger.Manual transmission 2.3 liter 27 mpg.

[ATVMX33]

(2000 Mustang GT 5-speed 4.6L V8)
(stock engine)
City: 17
Highway: 25

i figured out i get about 21 mpg average with my not trying to save gas...haha

[honda400ex2003]

yr vehicle or machine
(L) (# cylinders)
milage
milage with trailers

*highway milage, city is a couple of mpg less for all of them*

2003 burb
5.3 v8
16-18 mpg
15-16 trailer

1997 silverado
5.7v8
18-19
10-18 trailer depending on what is on it
10 w/ 30 ft camper
16 with 4 atvs on the snowmobile trailer

1997 sunfire
2.4 v4
28-30

1997 explorer
4 v6
16-18
14 trailer depending

1997 corrola
2 v4
40

2003 400ex
40mpg stock
30 mpg modded

rincon
35 mpg

rancher
40mpg

300ex
40mpg

[Brauap]

This is great!

My dad's stock 2001 F-350 Crewcab/8ft bed Dualy 7.3 Turbo Auto

11 city
11 highway

Does anyone have any info on either a 4.3 vortec or a 327 small block?

[jesseweaver]

2007 r6 .6L 4 cyl.

about 40 mpg when i really rip on it :D

not sure how much better i could get if i took it easy


and my 99 silverado 1500 4.8 4x4 gets about 15 city

[bert400]

'01 GMC 2500HD
6.0L
6 inch lift
35's and 20in rims
K &N cold air

town = about 9 mpg :mad:
highway = around 14 mpg :ermm:

-yeah it sucks! Thats why I bought a bike :D


'06 R6

town = around 40 mpg

Highway = not positive but prolly around 50 mpg??

[MX MaNiAc 06]

2004 pontiac grand prix. 3.8 V6

City: 23-24?
Hwy: 29-30


95 Chevy 1500 2wd 305 V8

City: 14?
Hwy: 20

[yfzrider310]

2001 3.8l grand prix gt.
Was getting 15-16 everywhere then gutted the cat and glasspacks for mufflers. Now im getting 22-26 for just country driving. Its like a mix between city and highway I think. I pretty much baby the thing everytime i drive it unless theres girls around then I actually drive the thing hard.:cool:

[gncc025]

1. 1992 chevy 1500 ext-cab 350
Mods- Super chip, Flowmaster dualed, 5spd manual
mpg highway- 14
mpg city- ?


2. 1991 chevy corsica 2.2 4cyl
Stock
mpg highway-28...29
mpg city-25

[krt400ex]

'97 gmc sierra k1500 4wd. got the 350 small block (5.7 litre with vortec). 4 spd auto trans with stock sized wrangler rt tires at 44 psi. i have a 160 degree thermostat and i have a hotter distributor cap and rotor to give me a better spark and i have a k&n filter with an open air box lid.

getting about 12.5 city and about 15.5 highway(at like 85 mph lol). i'm using 89 octane fuel(midgrade)

[e463x]

1999 chevy 2500 with the 454
5 in town
and maybe 9 on the highway

[krt400ex]

Originally posted by e463x
1999 chevy 2500 with the 454
5 in town
and maybe 9 on the highway

my dads boss has an '01 3500 dually with the 502 in it and he put a dump bed on the back (added about a ton to a ton and a half of weight). he gets like 250 miles to a tank at the best. not sure the size of the tank though

[Canadian144]

09 Subaru STI, 2.5L Turbocharged Flat four (boxer engine), AWD, 6 speed manual.
Stock (for now anyways, stage 2, aftermarket downpipe and catback hopefully soon)
City: 17
Highway: 23

Though that depends on how I'm driving... and what kind of cars are driving near me haha.

[beastlywarrior]

silverado 350, summit catback, wrangler tires
50% highway
12 mpg winter
16 mpg summer

Originally posted by Hondamaster5505
Well, just to get it going, I haven't actually calculated it yet, but estimates are from other firebird owners.

Motor- 5.7 LT1 V8
Transmission- 6-speed manual

Average city- 16mpg
Average highway- 24mpg

Not bad for a sports car;)

ummm sports car? lawl thats where yall domestics get pony car mixed up with muscle car and sports car. Anyways...


EJ8 98+ ITR swap
26 MPG City 28MPG Highway with some aggressive driving.

[Hondamaster5505]

Originally posted by FlewByU352
ummm sports car? lawl thats where yall domestics get pony car mixed up with muscle car and sports car. Anyways...


EJ8 98+ ITR swap
26 MPG City 28MPG Highway with some aggressive driving.

You just had to start or say something didn't you? lol.

I pretty much label any RWD, manual trans, V8, 2-door car as a sports car. I mean, people buy them to be a sporty d/d or weekend car. Compared to 4/6 cylinder FWD 4-door cars.

Sorry if im not technical and label it as KBB does "Sport Touring":rolleyes:

[One_Bad_400]

2004 F-150
4x4
35" MTZ's
EDGE programer

city - 12
highway - 15 (up to 17 if i drive like a gramdma and have no where to go)



Has been crossing my mind to sell it?!?! i heard them new Rangers get close to 30 mpg. that sounds so nice. I dont go muddin' or off roading any more. so i really dont care for my daily driver to be jacked up on 35"s.

[Brad77]

LTandRaptorider and bert400

I can relate with you guys. Although mine is just a little better, not sure why??

2004 Chevy 2500hd 4x4
6.0L Stock
no lift, stock size tires

Averages around 13.5 mpg
About 12 in city
About 14 to 15 on the road

[Hondamaster5505]

Another to add to the list.

97 GMC Sierra 3500 4x4
7.4 454
automatic
dual wheel

city- 9-10mpg
highway 11mpg

The thing is a PIG.. we can barely afford to drive it. lol.

[e463x]

Originally posted by Hondamaster5505
Another to add to the list.

97 GMC Sierra 3500 4x4
7.4 454
automatic
dual wheel

city- 9-10mpg
highway 11mpg

The thing is a PIG.. we can barely afford to drive it. lol.
i dont think your getting 9-10 in town unless you drive the a grandma. I get 6-8 if im lucky in town with the same engine.

[Pipeless416]

1999 Pontiac Trans Am
RWD A4 3.23 rear end
LS1 5.7 V8

stock

City: 19-21
Highway: 25-26

-on 93 octane

[Hondamaster5505]

Originally posted by e463x
i dont think your getting 9-10 in town unless you drive the a grandma. I get 6-8 if im lucky in town with the same engine.

We are getting that. Maybe 8 if we're slightly harder on the throttle.

What gears does your truck have? Ours has the 4:56 ratio, which really helps around town because it takes off under less strain. Just kills on the highway, lol. There's a good chance yours has gears in the 3 range, or 4.10's. That might explain it.

[fastredrider44]

You asked about 4.3 and 327 Engines. I'm assuming you are talking about the 5.3 liter engines in the 99-up Chevy's. 4.3 Autos don't get that great in a full size. I'd say the 4.8 l in the 99-current Chevy's get the best mileage out of the Chevy's but the 5.3 only gets a little less with a lot more power.

[CaptainCanuck]

2005 Dodge 1500 Daytona, 5.7 Hemi Magnum, 4x4, automatic transmission

Borla Catback with a Cherry Bomb Extreme Muffler, Spectre Cold Air Intake, AirRaid Throttle Body Spacer, Superchips on 87 Octane.

I don't calculate City mpg. Highway stock was 16. Now 18-19 avg.

[smr]

2006 ram 3500 5.9 cummins.

Open exhust and programed for economy.

24-26 highway.

Never drive it in town so I don't know.

[ridered11]

2001 Chevy 1500 Z71 with the 5.7 Vortec 350 V8

-intake
-exhaust

City= 13-15ish

Highway=about 20

[Brauap]

Originally posted by fastredrider44
You asked about 4.3 and 327 Engines. I'm assuming you are talking about the 5.3 liter engines in the 99-up Chevy's. 4.3 Autos don't get that great in a full size. I'd say the 4.8 l in the 99-current Chevy's get the best mileage out of the Chevy's but the 5.3 only gets a little less with a lot more power.

I had gotten a mildly built (carb, filter, headers, + more but I am not sure) 327 out of a 66 C10

and I am also getting a 4.3l from a friend and I was just wondering what kind of MPG I could expect from both engines?

[aDviSol2y]

'05 Z71 Tahoe
5.3L Vortec
City - 13-14
Hwy - 20ish

[racer36]

98 sonoma 4x4
4.3L bone stock w/custom exhaust

city-19 driving it like i like to drive it
highway-no idea, dont drive highways

im thinking thats good for a truck with about 280,000
miles, but does have new motor

[m0t0xk1d]

2003 dodge ran 2500 Hemi
highway - 10.5
towing race trailer - 8.5 :rolleyes:

[fastredrider44]

Originally posted by Brauap
I had gotten a mildly built (carb, filter, headers, + more but I am not sure) 327 out of a 66 C10

and I am also getting a 4.3l from a friend and I was just wondering what kind of MPG I could expect from both engines?

What vehicle are you putting it in? That's where MPG really comes into play.

[fastredrider44]

Originally posted by ridered11
2001 Chevy 1500 Z71 with the 5.7 Vortec 350 V8



5.7?

[honda400ex2003]

^^ impossible. lol. Ethanol gas was the worst milage killer i have come across. 2mpg in just about every vehicle we own. lol. it sucks bad, we used to get 20 in the truck and 19-20 in the burb till we finally started getting ethanol at most of the pumps. steve

[greenblood01]

1995 Ford Ranger XLT
Supercab
2.3L 4 cylinder
5 speed

City: 20-23
Highway: 24-26

1998 Ford F-150
Supercab, shortbed
4.2L V6
Automatic
2 wheel drive

City: 13-15
Highway: 16-17

[BlaineKaiser450]

1993 Dodge W350 4x4 Auto
5.9 Cummins
3-4-5-6 Striaght pipe and a Stack
Stock otherwise
City: 17-18 MPG
Highway: Same


2007 Dodge Charger SuperBee
Srt-8 6.1 Hemi
3 inch glasspack exhaust, stock otherwise
City: 12 MPG
Highway: 15 MPG


2007 Chrysler Aspen
5.7 Hemi
All stock
About 15-17 MPG all around

[Quad18star]

2007 Toyota Tundra 4x4 CrewMax

5.7L ,automatic, no engine mods but a leveling kit which has affected fuel mileage.

City - 13-14 mpg
Hwy - 17-18 mpg

[tayyo789]

2004 Dodge 2500
5.9 Cummins
6 speed
stock

I get about 20-24 hwy depending on who I'm driving with.
Never less than 16 in town

[CJM]

Speaking of 454 chevys, my boss had an early 90's SS 454 truck, it had 4.10 gears and a 3 speed and it got like 5mpg in town and maybe 12 hwy. But man it had power, could toast most things out there and spin in every gear.

[krt400ex]

Originally posted by fastredrider44
5.7?

5.7 liter. 350 cubic inches is 5.7 liters. the chevy 350 is commonly called a 5.7

Unless I missed some awesome turbo diesel I think I am winning for power/MPG lol Not to mention I'm pretty confident I hve the shortest gears. I cruise at 4k RPM on the highway lol

[witech]

Originally posted by CJM
Speaking of 454 chevys, my boss had an early 90's SS 454 truck, it had 4.10 gears and a 3 speed and it got like 5mpg in town and maybe 12 hwy. But man it had power, could toast most things out there and spin in every gear.

Back in the 90's we took a 91 454ss and installed Thorly tri Y headers,paxton supercharger and cam. Mileage went from 5 to 7 mpg to 10mpg normal and 11 towing ( due to keeping foot out of it)
I dont remember the exact dyno numbers but it was somewhere in the high 300 horse and almost 800 foot pounds of torque.
For a big sow of a truck it smoked most everything we raced up to 100mph. Just ungodly throttle response. It was very difficult not to chirp the tires normal driving .
Sorry if I got off topic.

[honda400ex2003]

Originally posted by krt400ex
5.7 liter. 350 cubic inches is 5.7 liters. the chevy 350 is commonly called a 5.7

The 5.7 was discontinued in 1999 in the last of the burbs and some of the 3500 trucks. in normal trucks like the 1500s it was moved to the 5.3 l in 1999 with the change of the body styling from 1998 and the old style back through 88 when it was the square body. the 5.7 question was directed toward redrider, it is not supposed to be a 5.7 in the truck that he was referring to which is a 2001. it is a 4.3, 4.8, 5.3, or the 6L in 2001. depending on the package it was and the size of the truck. the ss models had the 6L in them along in later years with some trucks from different years such as the 2500 hds. the HD trucks that were 1500s and such had the 6L in them in 2001 if ordered with it. It just depends on what package you get. I know the trailblazer, monte, impala, and some of the other ss models in 06 and such had the 6L or the 5.3 in them depending on the car. These vehicles are a blast to drive with a motor like that in them. they would def put you in the seat. i hope this clears up a few questions that some of the peeps had with the 5.7 and the 5.3s and such. the 5.7 and the 5.3 are supposed to be the same amount of hp but the 5.3 is geared differently so it runs higher rpms thus resulting in poor milage when directly compared to the 5.7s of yester year. I wish i could get some new 5.7s to put in the new vehicles and actually get 18 without trying to hard. lol steve

[ridered11]

I stand corrected, I don't know why I typed 5.7.

[honda400ex2003]

lol at least we know what it is now for sure lol. 5.3 :D it is a fun motor to put to the floor and let it take off to pass someone steve:D

[fastredrider44]

Speaking of 5.3 and 5.7 motors, I have found that to get the best mileage out of a 5.7, you need to keep the RPMs down and not kick it anymore than you have to on the hills. I will speed up on downhills so that I only lose a few mph on the uphill.

In the 5.3 we've always had the best luck with mpg turning the cruise on and letting it rev to the moon on hills. These motors seem to get better mileage letting them do their thing. Same with 6.0s. They handle the revs better.

[honda400ex2003]

good to know, i never seem to get real good milage with the cruise with the 5.3. i will have to try it out and see how it does. steve

[CJM]

Originally posted by witech
Back in the 90's we took a 91 454ss and installed Thorly tri Y headers,paxton supercharger and cam. Mileage went from 5 to 7 mpg to 10mpg normal and 11 towing ( due to keeping foot out of it)
I dont remember the exact dyno numbers but it was somewhere in the high 300 horse and almost 800 foot pounds of torque.
For a big sow of a truck it smoked most everything we raced up to 100mph. Just ungodly throttle response. It was very difficult not to chirp the tires normal driving .
Sorry if I got off topic.

Yea, this truck was insane. It wasnt pretty, it had been totaled and he built it back up with frontend parts from a work truck chevy of the same era. The thing was falling apart but could do 0-60 in no time. I literally chirped the tires just taking off from a light easily in it.

He had to sell it cause it was basically falling apart and ruined cause he used it as his work truck.

[witech]

What I didnt understand is why they didnt use an overdrive tranny in the 454ss. At hyway speeds it was screamin with the old turbo 400. The paxton setup still used the dual injector throttle body and we always had trouble keeping the cheezy pressure manifold sealing up on it. Then when you did get good boost the belt slipped at high rpm.

[Brauap]

Originally posted by fastredrider44
What vehicle are you putting it in? That's where MPG really comes into play.

Either an old Toyota Pick-up or a Geo Tracker/Suzuki Sidekick; either vehicle is pretty small and light..

[fastredrider44]

Originally posted by Brauap
Either an old Toyota Pick-up or a Geo Tracker/Suzuki Sidekick; either vehicle is pretty small and light..

Transmission? 4x4? Tires?

[Brauap]

Automatic, 4x4, 35x14.5 tires

[fastredrider44]

Gears will also make a big difference, but lightweight vehicle or not, probably no more than 15 if you're being easy on it.

[ROTTY261]

2007 Chevy Silverado 3500
4X4 6.6L turbo Diesel
15 in town
21 on the highway emtpy
13 with the trailer

2006 Mitsubushi Montero Limited
4X4 3.8L V-6
16 in town
20 on the highway

1998 Honda CRV (daily driver for in town stuff so the truck can sit)
4X4 2.0L 4 cylinder
25 in town
29 on the highway

[CJM]

Originally posted by witech
What I didnt understand is why they didnt use an overdrive tranny in the 454ss. At hyway speeds it was screamin with the old turbo 400. The paxton setup still used the dual injector throttle body and we always had trouble keeping the cheezy pressure manifold sealing up on it. Then when you did get good boost the belt slipped at high rpm.

I never understood it either, I knew of a few guys who had a 4 speed built up to handle the power. I dont think it was ever meant to be a hwy truck either.

Course Im also a fan of the 2 speed powerglides, but they aint good for hwy period..

[destey]

Had a '92 Ford F350, 460ci, got probably 5-7mpg. Seemed like the auto only had 3 speeds and in top gear it was always revving high. Supposedly only had 230hp when it was new. Didn't feel like it though.

Hauled a lot of limestone in that, way more than rated. Scales said I had 8600lbs net one time. Had to stand on the brakes to stop it.

[Scro]

2003 F-150 Supercrew
5.4 V8
2 wheel drive

18 MPG on the highway, don't know about city.