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building fuel efficient vette
Thread Starter
Racer
Joined: May 2004
Posts: 414
Likes: 0
From: Tucson Az
St. Jude Donor '04 & '05
building fuel efficient vette
What would one need to do to push the envelope on building a super fuel efficient vette? I have headers, intake and exhaust but I was wondering just how high could you go? (without going to alt fuels)
I would bet we could clear 30 mpg on the freeway
Thanks
Pete
I would bet we could clear 30 mpg on the freeway
Thanks
Pete
Race Director
Joined: Dec 2003
Posts: 12,599
Likes: 1
From: Texas
Originally Posted by pdykinga
I would bet we could clear 30 mpg on the freeway
Thanks
Pete
Thanks
Pete
Le Mans Master
Joined: Dec 2000
Posts: 9,900
Likes: 1,840
From: Hot Springs AR
Originally Posted by pdykinga
What would one need to do to push the envelope on building a super fuel efficient vette? I have headers, intake and exhaust but I was wondering just how high could you go? (without going to alt fuels)
I would bet we could clear 30 mpg on the freeway
Thanks
Pete
I would bet we could clear 30 mpg on the freeway
Thanks
Pete
Have a good one,
Mike
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Thread Starter
Racer
Joined: May 2004
Posts: 414
Likes: 0
From: Tucson Az
St. Jude Donor '04 & '05
I figured the cam/tuning would be the big factor in mpg, would it correlate that more power necessarily equates to worse mpg? Or is a larger cam more efficient at moving air/fuel so at low rpms they would get better mpg?
Thanks
Pete
Thanks
Pete
Team Owner
Joined: Feb 2001
Posts: 62,195
Likes: 28
Cruise-In II Veteran
St. Jude Donor '03-'04-'05-'06-'07-'08-'09-'10-'11-'12-'13-'14-'15-'16-'17-'18-'19
30+ Highway here too........113K miles.......Vararam.....LT Headers......Stingers......and 4.10's.
Of course......as soon as I hit "the button" the 30 gets cut in half.....
Regardless......we're talking about a car that has 113K miles....can put out 500hp.......can run low 12's / high 11's......and still get 30+ mpg on the highway.
Not too friggen' bad......
Of course......as soon as I hit "the button" the 30 gets cut in half.....
Regardless......we're talking about a car that has 113K miles....can put out 500hp.......can run low 12's / high 11's......and still get 30+ mpg on the highway.
Not too friggen' bad......
Waka, Waka, Waka!
Joined: Jun 2002
Posts: 2,435
Likes: 2
From: Richmond Virginia
CI 4-6-8 & 10 Veteran
St. Jude Contributor
Originally Posted by pdykinga
I figured the cam/tuning would be the big factor in mpg, would it correlate that more power necessarily equates to worse mpg?
If you grind a cam with less valve overlap (a higher Lobe Seperation), the fuel economy goes up. Also the torque curve goes lower into the RPM range; thus low end power goes up, but top end goes away. Not technically less power, just different power.
(note to the physics guru's: yeah I know.... I'm just generalizing)
You can get an idea how an engine is set up by the relation of Torque and HP. In a high overlap engine, HP is much higher than Torque; for examply the Honda S2000, IIRC has 200hp but 123 ft/lbs. On the other side of the spectrum is, for example, my L98. I have 341 ft/lbs at the wheels but only 213 rwhp. I have more vehicle weight and over twice the engine of an S2000, but I get roughly equal mpg. The LS1 is a pretty good all-around motor, and the hp and Torque being about equal would be a clue to that if you had never seen one.
Last edited by Fozzy_Bear; Jun 29, 2005 at 03:19 PM.
Former Vendor
Joined: Mar 2004
Posts: 3,442
Likes: 18
From: Winchester CA
come on guys we are talking about fuel mileage on corvettes ????, guys if your so worried about fuel mileage go buy a honda, i always thought the selling feature of the Corvette was its style, heritage and power, not its fuel economy. you people crack me up.
p.s. guys let me know when there is another Zaino Wax thread
p.s. guys let me know when there is another Zaino Wax thread
Former Vendor
Joined: Mar 2004
Posts: 3,442
Likes: 18
From: Winchester CA
Originally Posted by Skunkworks
Depending on your AFR, you can possibly lean it out a bit. C5 typically in stock form run a little rich. But be careful of gas grade.
Burning Brakes
Joined: Oct 2003
Posts: 1,106
Likes: 1
From: Foresters Falls(near Ottawa) Ont
Originally Posted by Sandra Bigwoode
There's a guy in Canada who dropped a 6.5 litre diesel into a C3 and he gets 44 mpg. [Imperial gallon, ie...]
Ron ...
Safety Car
Joined: Dec 2000
Posts: 3,950
Likes: 32
From: belleville n.j.
Originally Posted by RyneZ06
come on guys we are talking about fuel mileage on corvettes ????, guys if your so worried about fuel mileage go buy a honda, i always thought the selling feature of the Corvette was its style, heritage and power, not its fuel economy. you people crack me up.
p.s. guys let me know when there is another Zaino Wax thread
p.s. guys let me know when there is another Zaino Wax thread
