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-   -   aerodynamic camaro? (https://ecomodder.com/forum/showthread.php/aerodynamic-camaro-23526.html)

camaroman101 10-01-2012 11:37 PM

aerodynamic camaro?
 
hi, new poster to this forum and ecomodding in general. the more i read the more and more i am interested in aero mods. i own a 95 camaro as a daily driver and was curious about a few things. i am planning a fog light grill block, clear headlight covers, and plastic air dam and tire deflectors. had a couple of questions

do my mirrors look aerodynamic or is a passenger mirror delete in order?
http://i387.photobucket.com/albums/o...8/DSC07132.jpg
http://i387.photobucket.com/albums/o...8/DSC07120.jpg

also what are the rear tire deflectors behind the rear wheel for in this picture?
http://http://www.netcarshow.com/che...llpaper_13.htm
http://photo.netcarshow.com/Chevrole...0_photo_13.jpg

and lastly is there anything subtle/easy i can do to my rear end? i was thinking maybe it would be more aerodynamic to block airflow from going under the rear spoiler. search youtube for "MOV01684.MPG camaro" to see a video of airflow around the rear spiler of a camaro. this particular one has a large lip addition but i think it may still be helpful

http://i387.photobucket.com/albums/o...8/DSC07114.jpg

thanks for any help!

oil pan 4 10-01-2012 11:52 PM

Here is the 3rd gen thread, might give you a few ideas.
http://ecomodder.com/forum/showthrea...ree-20643.html

The early body style 4th gens mirrors are pretty slick, I would leave them alone.

More food for thought:
http://ecomodder.com/forum/showthrea...els-23234.html
It originated back around 2004 during my go fast days.

euromodder 10-02-2012 01:50 PM

Quote:

Originally Posted by camaroman101 (Post 331446)
hi, new poster to this forum and ecomodding in general.

Welcome to ecomodder.

Quote:

do my mirrors look aerodynamic or is a passenger mirror delete in order?
They look as clean as mirror come - though it's very tricky to say wether mirrors are really aerodynamically fine.
Aerodynamically, they're a difficult area, so removal is almost always a (small) benefit.


Quote:

also what are the rear tire deflectors behind the rear wheel for in this picture?
http://photo.netcarshow.com/Chevrole...0_photo_13.jpg
They're usually to legally cover the wheel so it doesn't stick out of the body.
That's a legal requirement in some areas.

Quote:

and lastly is there anything subtle/easy i can do to my rear end?
Before you go chopping up the 17 yo Camaro, which still looks OK on the pics, what MPG are you getting at the pump ?

If it's really a guzzler, you might keep it as a fun car and limit the miles you put on it, and get a more economical daily driver.
Just a thought ...

Smurf 10-02-2012 05:06 PM

How about some mechanical details? What engine, transmission, and rear end gearing do you have?

I know some of the rear end gears can swap with S10s, so if you're looking for highway MPG..

camaroman101 10-02-2012 11:55 PM

im currently a student so i can only really afford one car and i'm not quite ready to give this up.

its a 5.7L LT1 V8, 4L60E automatic, with a 3.23 rear end

Smurf 10-03-2012 12:06 AM

So, biggest motor, worst transmission, and best MPG gearing they offered. Gotcha.

I have the same tranny :( Solid, but nothing to write home to Facebook about.

What kind of MPG numbers are you getting now?

camaroman101 10-03-2012 01:23 PM

my last two tanks were 18mpg 40%city and 15.6mpg 75%city

the 3.23 i have now were part of an optional performance axle package, stock they came with 2.73. how much of a difference would that make in mpgs?

LeanBurn 10-03-2012 01:47 PM

I would modify the variable that yields the greatest gains that cost the least first.

1) driving habits
2) tire pressure
etc...then move to mods that cost, that may have a lesser effect.

redneck 10-03-2012 02:46 PM

Quote:

Originally Posted by LeanBurn (Post 331763)
I would modify the variable that yields the greatest gains that cost the least first.

1) driving habits
2) tire pressure
etc...then move to mods that cost, that may have a lesser effect.


+1

Read

100+ Hypermiling / ecodriving tips & tactics for better mpg - EcoModder.com

Then

65+ Vehicle modifications for better fuel economy - EcoModder.com


Since your car is a 1995, it is pre OBDII. You can not use a Ultra Gauge or Scan Gauge mileage computer. You can however use a MPGuino sold here on this site. You would have to splice it into your wiring harness. It is not hard to do and gives you a ton of feedback. At the very least install a vacuum gauge to help you figure out if what your doing is a plus or minus.

http://ecomodder.com/forum/showthrea...able-6914.html

The best thing you can do to improve your mpg is...

Adjust the nut behind the wheel...

>

oil pan 4 10-03-2012 03:32 PM

Quote:

Originally Posted by camaroman101 (Post 331760)
my last two tanks were 18mpg 40%city and 15.6mpg 75%city

the 3.23 i have now were part of an optional performance axle package, stock they came with 2.73. how much of a difference would that make in mpgs?

Ohhh.
2.73 on a V8 with Th700 or 4L60x isnt the holy grail of V8 fuel economy but its darn close.
At some point I would like to go from 3.08 gears to 2.73 gears, I expect to pick up a little under 2mpg.
You would see at least that.
My metric for picking up MPGs is to try and stay under $250 per 1 MPG gained.
By the time you bought and installed the 2.73 rear, sold your old one I bet you could be in it for less than $500.
The 2.73 rear ends are toxic to the performance 1/4mile guys, they will all but give them away for free.

camaroman101 10-03-2012 04:24 PM

Quote:

Originally Posted by oil pan 4 (Post 331809)
Ohhh.
2.73 on a V8 with Th700 or 4L60x isnt the holy grail of V8 fuel economy but its darn close.
At some point I would like to go from 3.08 gears to 2.73 gears, I expect to pick up a little under 2mpg.
You would see at least that.
My metric for picking up MPGs is to try and stay under $250 per 1 MPG gained.
By the time you bought and installed the 2.73 rear, sold your old one I bet you could be in it for less than $500.
The 2.73 rear ends are toxic to the performance 1/4mile guys, they will all but give them away for free.

is that 2mpg purely highway or can some city increase be expected too?

regarding the mpguino, im not good at anything wiring or electronics so roughly how much would a shop charge to install it?

Smurf 10-03-2012 04:46 PM

With an automatic, I would assume the 2.73s wouldn't improve city-mileage due to acceleration losses. But once you got the Camaro moving at speed, they would help keep the RPMs down.

oil pan 4 10-03-2012 05:35 PM

I would expect most of the gains from the gear swap to be had on the highway.
A city MPG improvement is possible.
When I put larger tires on my suburban it effected the final drive ratio a little. I expected MPGs to go down in city driving with bigger tires but MPGs stayed the same and may have even increased a little.

aerohead 10-03-2012 05:45 PM

rear visibility
 
When backing,do you(can you) see below the wing to judge distances?
Also,in the winter,during a good snow,does the entire rear deck get covered over with snow? If so,when you drive,does the opening below the wing appear to have any effect with respect to clearing the decklid?
GM is very careful about rearward vision and the spoiler might have been a compromise,balancing safety and drag reduction/downforce.

camaroman101 10-04-2012 12:17 AM

Quote:

Originally Posted by aerohead (Post 331840)
When backing,do you(can you) see below the wing to judge distances?
Also,in the winter,during a good snow,does the entire rear deck get covered over with snow? If so,when you drive,does the opening below the wing appear to have any effect with respect to clearing the decklid?
GM is very careful about rearward vision and the spoiler might have been a compromise,balancing safety and drag reduction/downforce.

nothing can be seen below the rear wing when backing up or looking through the rear view mirror so it has nothing to do with visability, and anytime it snows the rear deck and gap in the spoiler usually gets completely covered and filled in and it really doesnt seem to have any effect on keeping the rear window clean

aerohead 10-04-2012 06:51 PM

gap
 
Quote:

Originally Posted by camaroman101 (Post 331953)
nothing can be seen below the rear wing when backing up or looking through the rear view mirror so it has nothing to do with visability, and anytime it snows the rear deck and gap in the spoiler usually gets completely covered and filled in and it really doesnt seem to have any effect on keeping the rear window clean

You might tuft the area back there,and observe the yarn alternately,with gap open,then taped shut,to see if the flow pattern appears to change with the alteration.
When GM was developing the Trans Am Firebird,the Camaro 'kicker' type spoiler had the best performance,but Pontiac had to stay with the 'styling',so they used something more like what is on your car now.


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