Can I run 11:1 on 91 octane?
i have run as high as 12:1+ compression on 91 octane, but it depends on alt of different variables, like dynamic compression (cam choice), and of course tune. but 11.1 is a nice safe number for street car running 91 octane
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Whoever said, You should be fine needs to reword what they said..
He should Generally be fine, but the most important things id say is the DCR and how much timing its gonna be running..
He should Generally be fine, but the most important things id say is the DCR and how much timing its gonna be running..
As long as its tuned by someone who knows what they are doing, it will run fine. We put right around 11.5:1 in all of our street car motors, and it always works great. There are other factors like cam, heads, intake, etc, but 11:1 is fine for basically anything.
Joined: Jul 2005
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I am running 12.5:1 static compression, 8.67:1 dynamic compression, 30+ degrees of timing, 93 octane or E85, 1 degree of knock reduction maximum with both.
You can do it!
I believe the LS7 has 11.0:1 static compression and must make due on 91 octane.
You can do it!
I believe the LS7 has 11.0:1 static compression and must make due on 91 octane.
Yeah, anything under 12:1 with teh right tune will be ok. I am running 12:1 in my setup, and plan on putting pump gas through it. No corn, just good old 93.
At the same time, you get a bad batch of fuel, or agressive with teh timing/tune....gotta pay attention. I personally think that @ 11:1, you can just about get away with anything....bad gas, agressive tune, and have no worries. Once you start getting closer to 11.5:1 and up, is when things start getting more critical.
At the same time, you get a bad batch of fuel, or agressive with teh timing/tune....gotta pay attention. I personally think that @ 11:1, you can just about get away with anything....bad gas, agressive tune, and have no worries. Once you start getting closer to 11.5:1 and up, is when things start getting more critical.
