03-23-2019, 04:14 PM
|
#11 (permalink)
|
Master EcoModder
Join Date: May 2012
Location: Tampa, FL
Posts: 1,745
Thanks: 206
Thanked 420 Times in 302 Posts
|
I would go with a more modern engine, personally. It would be blasphemy to use anything but a v8 in a corvette, so I would say a 5.3 or 6.0 with dod/afm.
High compression, custom tuning, additional aerodynamic mods, etc. I think you could get up to 40, but I think more than that would be a pipe dream.
__________________
|
|
|
Today
|
|
|
Other popular topics in this forum...
|
|
|
03-23-2019, 11:45 PM
|
#12 (permalink)
|
Master EcoModder
Join Date: Jan 2008
Location: Sacramento, CA
Posts: 406
Thanks: 35
Thanked 143 Times in 105 Posts
|
From what I read, while better than most, that model Vette is not really all that aerodynamic. The Cd ranges between .29 and .31 depending on where you read. Get that down to a .19 or .20 then it is very aero. Will it still look like a Vette? Guess that's up to you to decide. Did that model have a belly pan? Good luck with your project.
JJ
|
|
|
03-24-2019, 01:15 PM
|
#14 (permalink)
|
Master EcoModder
Join Date: Aug 2012
Location: northwest of normal
Posts: 28,293
Thanks: 7,989
Thanked 8,803 Times in 7,261 Posts
|
As an overall strategy, I'd look for half the improvement from aero and half from the drivetrain.
For the drivetrain, consider a mild hybrid conversion.
For the aero, a full bellypan with wheel spats and a 4ft boat tail.
__________________
.
.Without freedom of speech we wouldn't know who all the idiots are. -- anonymous poster
____________________
.
.“You belong to Universe” -- the voice in Bucky Fuller's head
|
|
|
03-24-2019, 01:36 PM
|
#15 (permalink)
|
Human Environmentalist
Join Date: Aug 2010
Location: Oregon
Posts: 12,646
Thanks: 4,294
Thanked 4,446 Times in 3,413 Posts
|
Well, lets start with a baseline.
Alex- What MPG do you get with no wind, on a flat road, at 65 MPH? Best way to be accurate is to drive in 1 direction, then turn around driving the same exact route back, and measure overall fuel consumption and distance traveled.
|
|
|
03-24-2019, 02:19 PM
|
#16 (permalink)
|
Master EcoModder
Join Date: Feb 2010
Location: Elmira, NY
Posts: 1,784
Thanks: 319
Thanked 357 Times in 298 Posts
|
Aero mods and tires would likely be the most cost effective. Engine mods would have to pass emission inspection. Does anyone know of a 4-6-8 control package for GM engines with EFI?
|
|
|
03-25-2019, 03:22 AM
|
#17 (permalink)
|
Master EcoModder
Join Date: Jun 2016
Location: KY
Posts: 1,352
Thanks: 63
Thanked 366 Times in 269 Posts
|
Quote:
Originally Posted by rmay635703
|
I was gonna suggest something similar... I vote for a LBZ Duramax in the Vette with as tall of gearing as you can possibly find... I read it doesn’t weigh substantially more than an LS3...
Then lighter, narrower, smoother wheels and aero mods out the wazoo...
Or maybe just optimize the aero and use PnG?
__________________
My current Ecotec project...
![](http://ecomodder.com/forum/fe-graphs/sig10025a.png)
My last Ecotec project...
|
|
|
03-25-2019, 05:47 PM
|
#18 (permalink)
|
Corporate imperialist
Join Date: Jul 2011
Location: NewMexico (USA)
Posts: 11,243
Thanks: 271
Thanked 3,556 Times in 2,823 Posts
|
Quote:
Originally Posted by Grant-53
Aero mods and tires would likely be the most cost effective. Engine mods would have to pass emission inspection. Does anyone know of a 4-6-8 control package for GM engines with EFI?
|
I know it and you would have to swap the block to do it.
It's only 4 or 8 cylinders on the newer ones.
Supposedly GM has already tried a DoD vett, I heard they built 2 of them and people who tried it didn't like the 4 to 8 switch over even with it getting 4 more MPG on the highway.
__________________
1984 chevy suburban, custom made 6.5L diesel turbocharged with a Garrett T76 and Holset HE351VE, 22:1 compression 13psi of intercooled boost.
1989 firebird mostly stock. Aside from the 6-speed manual trans, corvette gen 5 front brakes, 1LE drive shaft, 4th Gen disc brake fbody rear end.
2011 leaf SL, white, portable 240v CHAdeMO, trailer hitch, new batt as of 2014.
|
|
|
03-25-2019, 11:19 PM
|
#19 (permalink)
|
EcoModding Lurker
Join Date: Mar 2019
Location: Chicago
Posts: 8
Thanks: 0
Thanked 10 Times in 3 Posts
|
I just drove the car home this morning. About 250 miles at about 65-70. Not exactly flat but I pulled 31 mpg. This car has 135,000 miles and I have no idea what tire pressure was, how old the plugs are, etc. I think on a flat surface after a tune and what not I could do 33-34 MPG.
I was at about 1600 RPM at 65 MPH.
Quote:
Originally Posted by redpoint5
Well, lets start with a baseline.
Alex- What MPG do you get with no wind, on a flat road, at 65 MPH? Best way to be accurate is to drive in 1 direction, then turn around driving the same exact route back, and measure overall fuel consumption and distance traveled.
|
|
|
|
03-26-2019, 05:33 PM
|
#20 (permalink)
|
EcoModding flying lizard
Join Date: May 2012
Location: Georgia
Posts: 743
Thanks: 618
Thanked 261 Times in 174 Posts
|
It took me two years of driving my 3.0 V6 6mt accord to hit 50 MPG. I don't think 50 MPG can be done in the vette without going extreme with the mods, or living in middle of nowhere Montana with a 100 mile commute. I passed 50 MPG a few times on my Montana trip, getting as high as 52 over 200 miles. A big help was the occasional semi going 62-65 mph where I could have a draft assisted pulse and glide going from around 50-70 mph and getting within 1.5 seconds of the truck.
__________________
-Kaze o tatakaimasen-
Best trip in V6: 52.0
Best tank in V6: 46.0
Best tank in Mazda: 49.9
Best tank in CBR: 61.3
Best tank in SV: 83.9
Quote:
Originally Posted by MetroMPG
You can lead a fashion-conscious horse to unusual-looking water...
|
|
|
|
The Following User Says Thank You to Daschicken For This Useful Post:
|
|
|