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#930981 - 06/29/07 05:31 AM 4.3l V6 vs 4.8l V8 Chevy 1/2 ton mpg???
06RANGER Offline


Registered: 01/02/06
Posts: 374
Loc: New Orleans
I'm considering a 2007 Chevy 1/2 (new style) ton WT with a 4.8l V8.

It seems from my research that the V8 gets within 1 mpg of the V6 with an addition 100 hp.

Is that possible?

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#930982 - 06/29/07 05:36 AM Re: 4.3l V6 vs 4.8l V8 Chevy 1/2 ton mpg??? [Re: 06RANGER]
CLG Offline


Registered: 03/13/07
Posts: 45
Loc: RI USA
I cant speak on that particular comparison but I know in alot of cases the smaller engine has to work that much harder to move the truck so I would personally go with the bigger motor.

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#930983 - 06/29/07 05:38 AM Re: 4.3l V6 vs 4.8l V8 Chevy 1/2 ton mpg??? [Re: CLG]
Rlc2500HD Offline


Registered: 01/01/06
Posts: 136
Loc: NC
At the very least get the 4.8
_________________________
2001 Chevrolet Silverado 2500HD 6.0 174,00 miles


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#930984 - 06/29/07 07:41 AM Re: 4.3l V6 vs 4.8l V8 Chevy 1/2 ton mpg??? [Re: Rlc2500HD]
obbop Offline


Registered: 06/24/04
Posts: 2832
Loc: MO
http://www.fullsizechevy.com/forums/

Topic covered very well at the above message board.

Surprised me how close the 6 and the 4.8 are in mpg.

But, the Chevy is a heavy truck and seems to me a 6 would have to work harder than an 8.

I got the 4.8. 15/21 mpg city/freeway with several variables affecting actual mpg.

4.8 is plenty for me and I did not want to pay extra for the 5.3.

If money doesn't matter I recommend the 5.3 for various reasons. The extra torque eases driving on hills, etc.

I don't think there is much difference between the 4.8 and the 5.3 regarding mpgs, either.

If you go Chevy I hope your warranty coverage turns out better than my experiences.

I an boycotting GMC/Chevy permanently due to my experiences.

Others have not had the bad luck I have had.
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#930985 - 06/29/07 08:29 AM Re: 4.3l V6 vs 4.8l V8 Chevy 1/2 ton mpg??? [Re: 06RANGER]
Whimsey Offline


Registered: 12/22/02
Posts: 3131
Loc: The Garden State
I can't speak for Chevy. But my experience with Ford and their torque laden inline 4.9L six in my 1989 F-150 and my 2002 F-150 with the 4.6L V-8, my vote is with the V-8. I get BETTER mpg, even with the new, to us, oxygenated ethanol laced fuel which reduced my mpg 10% ! Both trucks have 5 speed manual tranny's and are both are extended cabs with 8' beds and the same fiberglass cap, same weight

The V-8 is soooo much nicer to drive on the highway, especially if you have ANY hills where you drive. Plus it's much quieter and more powerful on the highway because it's not straining. Before you say anything both trucks have identical transmission gearing and diff gearing .

I'm just speaking from my actual experiences. I purchased both trucks new.

Whimsey

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#930986 - 06/29/07 10:07 AM Re: 4.3l V6 vs 4.8l V8 Chevy 1/2 ton mpg??? [Re: Whimsey]
dwendt44 Offline


Registered: 05/17/06
Posts: 3571
Loc: Central Wisconsin
Part of the answer is gearing.
As above, the V-8 is loafing while the 6 is working hard to push the weight.
_________________________
There's no such thing as:
Too big of a battery,
Too large of a gas tank,
or too loud of a horn,
or too bright headlights.

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#930987 - 06/29/07 03:18 PM Re: 4.3l V6 vs 4.8l V8 Chevy 1/2 ton mpg??? [Re: dwendt44]
cousincletus Offline


Registered: 09/25/02
Posts: 2513
Loc: Richmond, VA
The 4.3 V-6 and the Ford 4.9 isn't a good comparison. I have experience with the 4.3 and it gets better mileage than the V8. I had a 1994 Chevy van that got 21 mpg on the highway, and that's pretty good considering the aerodynamics of a van. I've known several people with the 4.3 5 speed manual combination and they got mid 20s on the highway. Your city mileage will be better with the 4.3 too, as it has 2 less cylinders to feed. If you don't have any heavy towing, I would definitely go with the 4.3.
_________________________

Fleet: 08 Chevy Colorado, 08 Malibu (wife's), 04 Impala.

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#930988 - 06/29/07 03:52 PM Re: 4.3l V6 vs 4.8l V8 Chevy 1/2 ton mpg??? [Re: 06RANGER]
JTK Offline


Registered: 08/14/03
Posts: 7380
Loc: Buffalo, NY
I've owned two 4.3L 1500's. A 1994 2wd, 5spd and a 1998 4x4, auto. Gas was way cheaper then, so I didn't have meticulous records on it, but I don't recall either hitting 20mpg hywy. They both had more than adequate power for my needs and a V6 'should' be easier and cheaper to maintain. If I was in the market again, I would definately get the 4.8L. Not enough difference in MPG and resale will be much better.

Joel
_________________________
2014 Subaru XV Crosstek 2.0L, 5spd, 2013 Dodge Grand Caravan SE (Babe magnet III)

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#930989 - 06/29/07 04:55 PM Re: 4.3l V6 vs 4.8l V8 Chevy 1/2 ton mpg??? [Re: cousincletus]
06RANGER Offline


Registered: 01/02/06
Posts: 374
Loc: New Orleans
Quote:

The 4.3 V-6 and the Ford 4.9 isn't a good comparison. I have experience with the 4.3 and it gets better mileage than the V8. I had a 1994 Chevy van that got 21 mpg on the highway, and that's pretty good considering the aerodynamics of a van. I've known several people with the 4.3 5 speed manual combination and they got mid 20s on the highway. Your city mileage will be better with the 4.3 too, as it has 2 less cylinders to feed. If you don't have any heavy towing, I would definitely go with the 4.3.




No, I only do occasional light hauling. Won't be doing any towing and I'll be getting an AT.

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#930990 - 06/29/07 11:12 PM Re: 4.3l V6 vs 4.8l V8 Chevy 1/2 ton mpg??? [Re: 06RANGER]
302Xplorer Offline


Registered: 11/17/05
Posts: 206
Loc: Richmond, Va
My father bought a 1/2 ton gmc w/ the 4.3 a/t ,new, for the gas milage.
He complained about not getting the V8 the whole time he owned it. Actually, he still complains about it and he has not owned it for over 2 years!

The diff. in gas milage is very small. The lack of power is most noticable w/ any hauling and on the interstate.

The 4.3 in a 1/2 ton is a dog IMHO and I had many years of experiance w/ it in that application.
_________________________
Is there gas in the car ?
Yes there's gas in the car!
I think the people down the hall know who you are.
00 Ford Explorer V8
02 Nissan Maxima GLE

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#930991 - 06/30/07 12:24 AM Re: 4.3l V6 vs 4.8l V8 Chevy 1/2 ton mpg??? [Re: 302Xplorer]
rpn453 Offline


Registered: 11/06/02
Posts: 4840
Loc: Saskatchewan
Expect 1 mpg better with the V6 in the city and no difference on the highway. Well worth it for the extra power, if the initial cost isn't too much more.

The EPA ratings on the 5.3L non-flex-fuel version are better than both the 4.3L and the 4.8L. I'd guess that's due to gearing.
_________________________
2004 Mazda3 GT Hatch 75k

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#930992 - 07/02/07 09:09 AM Re: 4.3l V6 vs 4.8l V8 Chevy 1/2 ton mpg??? [Re: rpn453]
mrsilv04 Offline


Registered: 12/08/06
Posts: 6527
Loc: Illinois
I have an '04 Silverado Extended Cab 2wd, 5.3 (non flex fuel), 3.42 gears, with 41,000 miles. I can get 22 mpg on the highway. Neighbor has a truck set up the same, but it is an '05 with a 4.8. I still get better mileage than he does.

The newer models now have 3.23 rear ends.

Why even consider a V6?
_________________________

President of the Illinois chapter of 'Motorcyclists for Global Warming'.

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#930993 - 07/02/07 02:46 PM Re: 4.3l V6 vs 4.8l V8 Chevy 1/2 ton mpg??? [Re: mrsilv04]
Black Bart Offline
Banned


Registered: 12/05/05
Posts: 502
Loc: Indiana
I think it depends on how you drive.
The small engine may do a little better if you are a slow driver but at interstate speed the V8 would do as well as the small engine.
If you own a small 4 cylinder car and you are happy with it then you may like the small engine.
If you are not accustomed to driving a underpowered vehicle then you will hate driving that full size truck with the small engine.
You are the only one that really knows what is best for you.
Some say the small engine has plenty of power while others will say it is a dog. Performance is a relative thing it depends on who you are talking to as to what plenty of power really is.

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#930994 - 07/02/07 05:27 PM Re: 4.3l V6 vs 4.8l V8 Chevy 1/2 ton mpg??? [Re: Black Bart]
mrsilv04 Offline


Registered: 12/08/06
Posts: 6527
Loc: Illinois
Here's something else. Resale value.

You won't see a full size truck with a V6 on the used side of a dealer's lot in this area, unless some old guy owned it who waxed it every other weekend, and only used it to go fishing in. Otherwise, they'll just wholesale it out. Just not enough of a market.

People expect a V8 in a full size truck. To commercial customers, they don't care, they just look at the bottom line and will buy the V6. They buy them, and then run the wheels off of them.

Do spend the extra several hundred (or so) for a V8. I think you'll be much happier in the long run, and if you trade it in earlier than you expected, you'll get most of your investment in the V8 back into your pocket. A V8 may be more important to the next guy than it was for you... he may want to pull a small camping trailer or a boat.
_________________________

President of the Illinois chapter of 'Motorcyclists for Global Warming'.

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#930995 - 08/09/07 11:52 PM Re: 4.3l V6 vs 4.8l V8 Chevy 1/2 ton mpg??? [Re: mrsilv04]
MrCritical Offline


Registered: 08/04/07
Posts: 2340
Loc: La.
Get the v-8. Mileage identical or better on hwy, way smoother that 4.3 Resale value better.

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