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11-28-2011, 06:11 PM
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#1
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Super Moderator
Join Date: Dec 2007
Posts: 6,850
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Not bad gas mileage in the Vette.
I took the carb apart and carb cleaned everything, it's running way better now. No more 2K rpm idle, haha. Starts easy too. Knock on wood.
I got better than 20 crusing from OC to SD, not so bad for a monster. The cruise ranged from about 14.5-15.5 AFR all the way down. If I went up a hill in 6th, or dropped into 5th gear, it went down to 11.5-13.5, which is what it should be doing.
The carb idles right about 14.5-15 in cold weather, but its a little richer when it warms up. I guess thats the nature of the beast when you run a carb though.
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I <3 forced induction.
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11-28-2011, 06:33 PM
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#2
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I, Vettezuki
Join Date: Feb 2006
Posts: 14,754
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Quote:
Originally Posted by enkeivette
I took the carb apart and carb cleaned everything, it's running way better now. No more 2K rpm idle, haha. Starts easy too. Knock on wood.
I got better than 20 crusing from OC to SD, not so bad for a monster. The cruise ranged from about 14.5-15.5 AFR all the way down. If I went up a hill in 6th, or dropped into 5th gear, it went down to 11.5-13.5, which is what it should be doing.
The carb idles right about 14.5-15 in cold weather, but its a little richer when it warms up. I guess thats the nature of the beast when you run a carb though.
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Better than 20 mpg in a carbbed, supercharged 383 . . that's impressive.
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11-28-2011, 06:59 PM
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#3
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Fast & Filthy
Join Date: Jun 2008
Posts: 3,840
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That's really good. What mph were you cruising at? I only get 22 in the Cobra cruising at 75-78 with 3.55 gears and you're making a lot more power than I am. As long as you stay out of it you can get good millage. When I took the Cobra to CSW and ran the Roval I would go through 7 gallons of gas in a 20 minute session which would be 8 laps. The Roval is 2.88 miles so I was getting around 3.30mpg at speeds of 40-135.
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11-28-2011, 07:01 PM
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#4
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Super Moderator
Join Date: Dec 2007
Posts: 6,850
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70-75.
My motor runs super cool, so I'm not so afraid to tune my cruise above 14.7
Do you have a 6 speed too? I'm at about 1750 rpm the whole trip.
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I <3 forced induction.
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11-28-2011, 07:11 PM
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#5
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Super Moderator
Join Date: Dec 2007
Posts: 6,850
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And I'm surprised you got even 3 mpg racing. Haha
P.S. intercool that bitch. Feeling how hot the air coming out of my procharger was at idle, it's no wonder I was melting pistons.
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I <3 forced induction.
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11-29-2011, 07:24 AM
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#6
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Fast & Filthy
Join Date: Jun 2008
Posts: 3,840
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Yes, I have a T56 with a .62 6th. I would like to put an aftercooler on it but it would cost me a lot and there isn't very much room for it. I'm happy with how it runs now.
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11-29-2011, 01:37 PM
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#7
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Super Moderator
Join Date: Dec 2007
Posts: 6,850
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Quote:
Originally Posted by 94cobra69ss396
Yes, I have a T56 with a .62 6th. I would like to put an aftercooler on it but it would cost me a lot and there isn't very much room for it. I'm happy with how it runs now.
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I have the .5 sixth gear, I think my fifth gear is .72.
And ya, I guess if you can control it with tuning, you don't need to intercool... Doesn't really matter.
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I <3 forced induction.
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11-29-2011, 01:51 PM
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#8
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pain's fun, hit me again
Join Date: Sep 2009
Posts: 6,264
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Ron just doesnt want to lose his cruise control ![Smile](images/smilies/smile.gif)
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To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts. Stopping the world!
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11-29-2011, 05:19 PM
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#9
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Member
Join Date: Nov 2010
Posts: 92
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That's pretty good mileage. What cam are you running?
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Easily entertained.
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11-30-2011, 10:36 AM
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#10
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Super Moderator
Join Date: Dec 2007
Posts: 6,850
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It's something like .550 in. .570 ex. lift, 242 / 246 duration with a 110LSA.
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