Switching Octanes
04-30-2006, 10:37 PM
#11
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Originally Posted by CHEVY6000VHO
Yeah your right. The service department lied to me. They told me it would run fine on 87oct fuel.
This tells me they were wrong:
http://www.powerblocktv.com/crate/crate.html#12
Jim
This tells me they were wrong:
http://www.powerblocktv.com/crate/crate.html#12
Jim
04-30-2006, 10:40 PM
#12
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when my truck was stock other than exhaust it ran worse on 87 than 89. it ran even better on 93. i am basing this off of mileage i got from the math i did and from the audible knock from the engine. 87 under wot made the truck sound like ****. 89 wasn't as bad but 93 gave me no engine noise from the valve train or where ever other. i'm not saying performance was better, just the engine seemed to run smoother and quieter with higher octane fuel. yes i did notice better mileage as well.
05-01-2006, 07:40 AM
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Originally Posted by Out1aw
I did the calculations today and found that every fill-up would only cost me $5 more if I ran 93 octane fuel as compared to 87 that I run now. I also know that LS1 f-bodys are supposed to only run 93 octane to run correctly. So my question is: Is it worth the switch (hp and mpg wise) to 93 octane?
Thanks
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