Gas ?
No bust on anyone's financial situation because I KNOW I am fortunate to even be financially secure enough to have a Corvette, but if you can't afford to put in 91 octane gas then maybe you can't really afford a Vette.
I own a vette whether you think I sould or not, I run 87 octane gas and have for the majority of 250,000 miles, and do jes fine thank you.
We're driving a relatively expensive car that was designed to use premium fuel yet for some reason some want to save a few penny's. To me it makes no sense walking into a show room looking at a $50,000 car and deciding not to my it because it requires premium fuel that costs an additional $0.30 more than regular....

and back home.




I agree with you that you can run 87 octane gas and the PCM will compensate just fine. Your choice to do that.
I am a Soldier in the United States Army and have been for over 19 years. I make a good living and can very much afford to drive what I drive, but by no stretch of the imagination am I a wealthy guy.
That said, GM recommends 91 or higher octane gas or run the risk of reduced performance or possible engine damage. I think I would rather pay .30 cents more a gallon for premium gas than to buy new engine or a new car because I was trying to save a few cents a gallon. I am surprised that you haven't been knocking like crazy putting 87 gas in a car with a 10.1: 1 compression ratio. Good for you (sincerely)
Do what you like and enjoy. Happy to hear you have no issues running 87 octane. To each his own, but I will not put any thing less than top-tier 91 or 93 gas in my Vette.
I agree with you that you can run 87 octane gas and the PCM will compensate just fine. Your choice to do that.
I am a Soldier in the United States Army and have been for over 19 years. I make a good living and can very much afford to drive what I drive, but by no stretch of the imagination am I a wealthy guy.
That said, GM recommends 91 or higher octane gas or run the risk of reduced performance or possible engine damage. I think I would rather pay .30 cents more a gallon for premium gas than to buy new engine or a new car because I was trying to save a few cents a gallon. I am surprised that you haven't been knocking like crazy putting 87 gas in a car with a 10.1: 1 compression ratio. Good for you (sincerely)
Do what you like and enjoy. Happy to hear you have no issues running 87 octane. To each his own, but I will not put any thing less than top-tier 91 or 93 gas in my Vette.
but I don't try to tell folks that running 105 octane gas will harm their car when I can't prove it,
instead of expounding my own unproven ideas I jes tell folks of my own findings and leave speculation to wall street
Some of you have forgotten the other part of this thread. The OP had also asked about his buddy who wants to race him with a prancing donkey? I think Curtis has figured out the octane issue with your rants. However you all need to advise him regarding the "heritage issue". Curtis, view this thread and understand that "YOUR" Chevrolet Corvette rolled off the same assembly line as the new C-6 and is also related to that beautiful C-1, with the same VIN....try that kind of lineage with a FoMoCo prancing donkey
http://forums.corvetteforum.com/show....php?t=1812602
Yes, he has a crumby Rustang, its slow and weaksauce. You have a corvette. And use premium if you race the car. When you beat him, don't post details if you didn't do it at a track. You will go to ban camp that way. I like racing at the track for 2 reasons, A) it is legal, B) it is controlled so there is less room for excuses from the loser.
All I want for christmas is this thread to be closed, oh Mod-A-claus will you make my wish come true?
The Best of Corvette for Corvette Enthusiasts





but I don't try to tell folks that running 105 octane gas will harm their car when I can't prove it,
instead of expounding my own unproven ideas I jes tell folks of my own findings and leave speculation to wall street
I hope I did not offend you with my posts, just stating my honest opinion. Totally feeling you on the results you are getting on 87 octane. GM recommends 91 or better and I feel better if I follow that recommendation
As for the other half of the OP question, You'll take the Stank no problem


- My Z06 cost me a tad over $52,000 when I bought it.
- The manufacturer calls for the use of premium fuel, 91 octane or above.
- The difference between regular and premium is $0.30 more per gallon.
- It costs $5.40 more to fill up from an empty tank.....assuming 18 gallons
Anyone see where I'm going with this?...

Let me see, if I average 25 mpg and drive my Vette a 10,000 miles a year, it would cost me a grand total of $120 to use premium. I don't know whether I can afford $10 a month as it cuts into my beer budget.
Last edited by sxeC7; Sep 14, 2007 at 11:01 AM.

Yes, he has a crumby Rustang, its slow and weaksauce. You have a corvette. And use premium if you race the car. When you beat him, don't post details if you didn't do it at a track. You will go to ban camp that way. I like racing at the track for 2 reasons, A) it is legal, B) it is controlled so there is less room for excuses from the loser.
All I want for christmas is this thread to be closed, oh Mod-A-claus will you make my wish come true?

The 07 5sp stang is not weaksause compared to a 97 C5 auto as far as straight line goes.

Last edited by Buckskinner; Sep 14, 2007 at 01:28 PM. Reason: correct spelling
Impossible!!! No way could the kids afford to keep up the repairs on CORVETTE, it remains a gentleman's car of mean$$$$$$$$$$$!
This is in light of my wifes pained face when I told her about the possibility of having cracked polished thin-spoke rims on the 'Vette. She always responds. My MUSTANG didn't always suck up money..........and she's right, it didn't.
John
Quick story...2 months ago I was finally going to the DYNO on my Friday off. I'd wanted to do it for a while and I was excited about the whole trip. I had to be there early and it was about a 2 hour drive from home. I got up very early and eventhough I had 3/4 of a tank I decided to fill up. I almost had it full when I realized I was putting REGULAR gas in. #&*$#@^%$!!! I finished off with 93 and was cussing myself because I knew it would mess things up. I'd tell Mike when I got there. In the process of getting there and watching them get the car ready and all that I forgot all about the gas. Mike did 2 runs and fixed the way lean condition I had resulting from my Vortex, x-pipe and stingers. Two runs later he calls me over and says, "What are you running for gas in here?". I was like DUH...and explained what had happened. Mike had to give me a conservative tune because of my screw-up and the DYNO numbers were way lower than they should have been. The car runs significantly better now. Many tanks of 93 have been run through it. I'll go back to the DYNO in the spring and have him optimize the tune. But even with that small amount of 89, he was seeing the knock sensor doing its thing and the cars performance was severely hampered.





Quick story...2 months ago I was finally going to the DYNO on my Friday off. I'd wanted to do it for a while and I was excited about the whole trip. I had to be there early and it was about a 2 hour drive from home. I got up very early and eventhough I had 3/4 of a tank I decided to fill up. I almost had it full when I realized I was putting REGULAR gas in. #&*$#@^%$!!! I finished off with 93 and was cussing myself because I knew it would mess things up. I'd tell Mike when I got there. In the process of getting there and watching them get the car ready and all that I forgot all about the gas. Mike did 2 runs and fixed the way lean condition I had resulting from my Vortex, x-pipe and stingers. Two runs later he calls me over and says, "What are you running for gas in here?". I was like DUH...and explained what had happened. Mike had to give me a conservative tune because of my screw-up and the DYNO numbers were way lower than they should have been. The car runs significantly better now. Many tanks of 93 have been run through it. I'll go back to the DYNO in the spring and have him optimize the tune. But even with that small amount of 89, he was seeing the knock sensor doing its thing and the cars performance was severely hampered.
This is what happens when you go against GM's recommendation to use 91 or higher gas. The PCM will pull timing if you use lower octane fuel.













