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i hate the term 'gas guzzling V8'

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Tbirdkid

Diamond Member
Apr 16, 2002
3,758
4
81
Im fine with it being a gas guzzler, although it costs me more to drive my truck around... at least i know i have the thought in my mind that i can take a civic and put it in the bed of my truck and drop it off at the nearest dump where it belongs.....
 

Turin39789

Lifer
Nov 21, 2000
12,218
8
81
Originally posted by: sharkeeper
225 / 1600

Getting better but still considerably over the wrong side of the fence. :p

How many people here actually know what the real weight of their car is? Probably not very many.



stock curb weight was 1650, not sure what year that is specific to though,
but the back seat is out and the roof was cut of and replaced with a convertible so perhaps even less.
 

Pacfanweb

Lifer
Jan 2, 2000
13,158
59
91
Originally posted by: Turin39789
Originally posted by: sharkeeper
225 / 1600

Getting better but still considerably over the wrong side of the fence. :p

How many people here actually know what the real weight of their car is? Probably not very many.



stock curb weight was 1650, not sure what year that is specific to though,
but the back seat is out and the roof was cut of and replaced with a convertible so perhaps even less.
What car is this?
 

Fingers

Platinum Member
Sep 4, 2000
2,188
0
0
Got about halfway through before I got tired of reading, but I can't believe nobody has stated the obvious. It's the weight of the vehicle that best determins the gas milage of the car. Granted it will decrease slightly with larger engines in the same vehicle but if you gear it higher and put an efficient v8 into a car the size of say a civic you will still get good gas milage.
 

ElFenix

Elite Member
Super Moderator
Mar 20, 2000
102,402
8,574
126
Originally posted by: Gillbot
Originally posted by: Gillbot
Originally posted by: ElFenix
seriously, the configuration of the cylinders doesn't have that much to do with mileage. even displacement isn't going to have that much of a difference (except for the increase in weight and internal friction). no, weight, gearing, and aerodynamics are the most important factors. of course, that is just the ramblings of a layperson.

yes it does actually. You need to have 8 cyls burn fuel per revolution vs. only 4 otherwise. It WILL burn more fuel overall, doesn't mean it's a gas guzzler though.

To elaborate....

The advantage is the torque gained so that taller gearing can be achived. This will allow more distance per given revolution of the engine.

Hell, My camaro is ~400 WHEEL Horsepower and gets over 35MPG on the highway.

a 2.5L 8 cylinder engine won't burn much more fuel than a 2.5L 4 cylinder engine, if any at all.
 

jagec

Lifer
Apr 30, 2004
24,442
6
81
Originally posted by: Turin39789
stock curb weight was 1650, not sure what year that is specific to though,
but the back seat is out and the roof was cut of and replaced with a convertible so perhaps even less.

what kind of car? That's VERY light.
 

VIAN

Diamond Member
Aug 22, 2003
6,575
1
0
V8s are built for more power. That's why it's a V8. It would be stupid to build a V8 with the power of a I4 because it would probably be cheaper to build it as a I4. So gas guzzling V8 is correct.

Power is the most important factor in determining whether your vehicle is a gas guzzler or not.
 

Zebo

Elite Member
Jul 29, 2001
39,398
19
81
Um they say it cause it true...

Median MPG 4cyl < Median MPG 6cyl < Median MPG 8cyl
:sun:
 

Zebo

Elite Member
Jul 29, 2001
39,398
19
81
Originally posted by: JDub02
motor size doesn't have much to do with fuel economy.

my 4 banger Jeep got 22 mpg highway at best. my 3.8L V6 Buick gets 30mpg highway


Jeeps always get poor mileage like pickups and SUV's

You're comparing a brick with soft big tires to car. (aerodynamics, road resistance, and mass all play a part in efficiency) Ya my V8 Crown gets better mileage than my V6 4-runner did too. It also does'nt have 10.5" wide tires with heavy tread and the aerodynamics of a brick.
 

Promethply

Golden Member
Mar 28, 2005
1,741
0
76
Originally posted by: ElFenix
seriously, the configuration of the cylinders doesn't have that much to do with mileage. even displacement isn't going to have that much of a difference (except for the increase in weight and internal friction). no, weight, gearing, and aerodynamics are the most important factors. of course, that is just the ramblings of a layperson.

If we exclude factors of mass, gearing, and aerodynamics, then the total surface area exposed to the combustion process, total number of moving parts, and inertia probably determine the fuel consumption in any given internal combustion engine design.
 

MasterAndCommander

Diamond Member
Feb 1, 2004
3,656
0
71
Todays V8's are a far cry from those of even 10 year's ago. The 3v-4.6L in the new 'stang can get highway mileage in the mid to upper 20's, all this while still producing 300HP on 87 octane. Now I see why it was on Ward's 10 best engines list :thumbsup:

I'm getting better mileage now than on my DOHC, 24v, 6-cyl Camry :D.
 

Gillbot

Lifer
Jan 11, 2001
28,830
17
81
Originally posted by: Pacfanweb
Originally posted by: Gillbot
Hell, My camaro is ~400 WHEEL Horsepower and gets over 35MPG on the highway.
B.S. Maybe when you put it in neutral and idle while you coast down a mountain, but there is no way you can average 35mpg on the highway with a car that has that much HP.
Maybe if it has nitrous to get that much power...maybe. But if it is built to have 400hp at the wheels, there is no way you can get 35 mpg.
A stock Camaro won't do that, and modifying it to have 400hp doesn't boost gas mileage.

Call BS if you want, it's all in the tuning and it is ALL MOTOR. If you shoot for stoich at all crusing RPMs and power only at WOT, the efficiency will be there as will the power on the top end. Plus at 80 on the highway, I'm only turning ~2000 RPM since my car has highway gears.

Doesn't matter to me if you don't believe it, I've got nothing to prove to you or anyone here.

My CAR HERE

If we exclude factors of mass, gearing, and aerodynamics, then the total surface area exposed to the combustion process, total number of moving parts, and inertia probably determine the fuel consumption in any given internal combustion engine design.

THe biggest thing overlooked on most cars today is the gearing. Most people that buy a V8 muscle or sports car don't care about mileage, they want performance.

Take that same car that came with 3.42 gearing in the rear from the factory, put in 2.73's and you'll gain a ton of mileage but the downside will be a performance loss. It's all about balancing the performance with economy.
 

Squisher

Lifer
Aug 17, 2000
21,204
66
91
I have a 2002 Z28 (310 HP V8) that gets close to 30 mpg on the highway and a 2003 Trailbazer (straight 6) that gets about 18 mpg on the highway.



 

KoolAidKid

Golden Member
Apr 29, 2002
1,932
0
76
Originally posted by: Skoorb
Most v8s do guzzle gas compared to non v8 engines, so it's a valid generalization.
:thumbsup:

On average, V8's consume more fuel per mile than engines with a fewer number of cylinders. How can you argue against this statement? Of course there are exceptions, but there are exceptions to everything.

I swear, flamewars are always populated by idiots who see the world in black and white.
 

3chordcharlie

Diamond Member
Mar 30, 2004
9,859
1
81
Originally posted by: Squisher
I have a 2002 Z28 (310 HP V8) that gets close to 30 mpg on the highway and a 2003 Trailbazer (straight 6) that gets about 18 mpg on the highway.
The F-car / corvette V8 is a really well-designed motor. But the reason you get better mileage in the camaro is because SUV's are pretty much 6000lb blocks. You can put any engine you want in one, it won't get good mileage.
 

smithdj

Member
Feb 3, 2005
108
0
0
Originally posted by: ElFenix
seriously, the configuration of the cylinders doesn't have that much to do with mileage. even displacement isn't going to have that much of a difference (except for the increase in weight and internal friction). no, weight, gearing, and aerodynamics are the most important factors. of course, that is just the ramblings of a layperson.



Over 51,000 posts op and of all the car topics that have come up you still have not learned jack about engines.
 

Pacfanweb

Lifer
Jan 2, 2000
13,158
59
91
Originally posted by: Gillbot
Originally posted by: Pacfanweb
Originally posted by: Gillbot
Hell, My camaro is ~400 WHEEL Horsepower and gets over 35MPG on the highway.
B.S. Maybe when you put it in neutral and idle while you coast down a mountain, but there is no way you can average 35mpg on the highway with a car that has that much HP.
Maybe if it has nitrous to get that much power...maybe. But if it is built to have 400hp at the wheels, there is no way you can get 35 mpg.
A stock Camaro won't do that, and modifying it to have 400hp doesn't boost gas mileage.

Call BS if you want, it's all in the tuning and it is ALL MOTOR. If you shoot for stoich at all crusing RPMs and power only at WOT, the efficiency will be there as will the power on the top end. Plus at 80 on the highway, I'm only turning ~2000 RPM since my car has highway gears.

Doesn't matter to me if you don't believe it, I've got nothing to prove to you or anyone here.

My CAR HERE

If we exclude factors of mass, gearing, and aerodynamics, then the total surface area exposed to the combustion process, total number of moving parts, and inertia probably determine the fuel consumption in any given internal combustion engine design.

THe biggest thing overlooked on most cars today is the gearing. Most people that buy a V8 muscle or sports car don't care about mileage, they want performance.

Take that same car that came with 3.42 gearing in the rear from the factory, put in 2.73's and you'll gain a ton of mileage but the downside will be a performance loss. It's all about balancing the performance with economy.

1. Great that you don't care if I believe your ridiculous MPG claims. Doesn't matter to me because I know that's impossible with the car you have, especially now that you say it isn't turbocharged or has nitrous. You might be able to have your instant economy say 35mpg briefly while coasting, but it can't possible average that. If you told me 25mpg, I could believe that, but no way 35mpg...not as an average.

2. Gearing makes a difference in highway mileage, but not as big a difference as some think. You can't take a hot rod with 4.11's that gets 10 mpg, throw a set of 2.56's in and suddenly get 20mpg. You might jump up to 13 mpg all-around. Highway would go up th e most. City would probably either go down or not change, since you'd have to give it more throttle to get rolling with the higher gear.
 

Gillbot

Lifer
Jan 11, 2001
28,830
17
81
Originally posted by: Pacfanweb
Originally posted by: Gillbot
Originally posted by: Pacfanweb
Originally posted by: Gillbot
Hell, My camaro is ~400 WHEEL Horsepower and gets over 35MPG on the highway.
B.S. Maybe when you put it in neutral and idle while you coast down a mountain, but there is no way you can average 35mpg on the highway with a car that has that much HP.
Maybe if it has nitrous to get that much power...maybe. But if it is built to have 400hp at the wheels, there is no way you can get 35 mpg.
A stock Camaro won't do that, and modifying it to have 400hp doesn't boost gas mileage.

Call BS if you want, it's all in the tuning and it is ALL MOTOR. If you shoot for stoich at all crusing RPMs and power only at WOT, the efficiency will be there as will the power on the top end. Plus at 80 on the highway, I'm only turning ~2000 RPM since my car has highway gears.

Doesn't matter to me if you don't believe it, I've got nothing to prove to you or anyone here.

My CAR HERE

If we exclude factors of mass, gearing, and aerodynamics, then the total surface area exposed to the combustion process, total number of moving parts, and inertia probably determine the fuel consumption in any given internal combustion engine design.

THe biggest thing overlooked on most cars today is the gearing. Most people that buy a V8 muscle or sports car don't care about mileage, they want performance.

Take that same car that came with 3.42 gearing in the rear from the factory, put in 2.73's and you'll gain a ton of mileage but the downside will be a performance loss. It's all about balancing the performance with economy.

1. Great that you don't care if I believe your ridiculous MPG claims. Doesn't matter to me because I know that's impossible with the car you have, especially now that you say it isn't turbocharged or has nitrous. You might be able to have your instant economy say 35mpg briefly while coasting, but it can't possible average that. If you told me 25mpg, I could believe that, but no way 35mpg...not as an average.

2. Gearing makes a difference in highway mileage, but not as big a difference as some think. You can't take a hot rod with 4.11's that gets 10 mpg, throw a set of 2.56's in and suddenly get 20mpg. You might jump up to 13 mpg all-around. Highway would go up th e most. City would probably either go down or not change, since you'd have to give it more throttle to get rolling with the higher gear.

I'm glad you know more about my car than I do. Can you fix the bushing squeak in the rear for me? ;)

The mileage info was gathered when I took the car from Dayton Ohio to Pittsburg PA to visit family. My HIGHWAY average was 35MPG. Don't believe it, come to Dayton and I'll take you for a ride. Other than that, I couln't care less. In the city, that's a whole different ballgame and my mileage is horrible.
 

ElFenix

Elite Member
Super Moderator
Mar 20, 2000
102,402
8,574
126
Originally posted by: Zebo
Um they say it cause it true...

Median MPG 4cyl < Median MPG 6cyl < Median MPG 8cyl
:sun:

right but you're not controlling for the other factors. mere engine layout has not much to do with mileage, is my claim.
 

ElFenix

Elite Member
Super Moderator
Mar 20, 2000
102,402
8,574
126
Originally posted by: smithdj
Originally posted by: ElFenix
seriously, the configuration of the cylinders doesn't have that much to do with mileage. even displacement isn't going to have that much of a difference (except for the increase in weight and internal friction). no, weight, gearing, and aerodynamics are the most important factors. of course, that is just the ramblings of a layperson.



Over 51,000 posts op and of all the car topics that have come up you still have not learned jack about engines.

how about you stop being a troll and explain exactly what part of my statement is so obviously wrong.
 

mdahc

Senior member
Oct 9, 2004
571
0
0
So, of all you who own an SUV or an automobile with a V8, do you really need that kind of power? Does any of you make a living going offroading in the Rockies or towing cattle? I'm not a tree hugger or anything, but I just don't see the point. I respect your perspective and admiration for engines, but wouldn't you rather spend your money elsewhere? Is going from 0 to 60 mph in a few less seconds or minutes really going to help when you're travelling from stop light to stop light or on the jammed freeways? If you also consider the recent increase in gas prices, it doesn't make much sense from a financial POV either.

I guess part of my frustration stems from the fact that I live in a medium city in the South, and I get so tired of hillbillies (the majority of whom own SUV's, pickups, or sedans with V8's) who tailgate me all the time or try to pass me on a two lane road (bear in mind, I'm talking about roads with 35-45 mph speed limits and I usually top out at 50-52 mph...I've gotten too many speeding tickets). I just cannot comprehend their states of mind...you can't go one minute in this city without running into a stop light or a stop sign, so WTF is the point of going 60-65 mph on these little roads? In addition to their being stop lights and stop signs everywhere, there are also elementary and high schools all over the damn place (believe me, it's quite a pain in the ass running into 3 school zones on the way to work every morning), which makes owning a car with such an engine even more pointless where I (and so many others) live.

I mean, I was all into cars when I was younger. Who isn't? But at some point, horsepower and torque just stopped doing it for me. I know I'm generalizing quite a bit. I can understand owning an SUV or a V8 pickup if you live in a state with a lot of snow or something like Minnesota or one of the Dakotas or if you're a rancher in Montana. But an SUV or a V8 in a flat area like where I live? It just seems like most of these a$$holes (the ones I've encountered, not necessarily calling out anyone here) would have been better off spending their $ on penis enlargement surgery.
 

Black88GTA

Diamond Member
Sep 9, 2003
3,430
0
0
Because to some (myself included) driving a gutless wonder of a car is incredibly frustrating. It's worth it when attempting to merge onto an expressway and knowing you can do it effortlessly, rather than hoping that there will be an opening a mile wide so my slow piece of $hit can accelerate up to speed in time to avoid being rear ended or tailgated by the semi barreling along at 80 mph in the very lane I'm trying to merge into.

Not to mention, driving a slow car is no fun. And when you load up said slow car with 5 people and lots of cargo, slow car becomes almost immobile. I'm willing to trade a few MPG so I can enjoy my time in my car, rather than worry about things like merging, passing, etc. I also tend to drive pretty fast, so I enjoy having a vehicle that can sustain the speed easily, rather than some wheezy four banger that sounds like it'll blow apart at anything past 75 mph.

Just my .02 of course.

Oh, and "penis enlargement surgery" :roll: give me a break. Because I enjoy driving a performace car, that automatically makes me "compensating" for something? Honestly, this is the most retarded thing I've ever heard.

That is the "argument" that anyone who isn't into cars or performance regurgitates anytime this subject comes up. It's all about personal preferences and tastes, not "OMG I HAS SMALL PEN0S, I NEED V8 SO I CAN BE MANLEE!!!11!!2

Grow up. :roll: