87 octane 100% gas vs 93 octane with ethanol
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From: vicksburg,mississippi
Car: 1986 z28
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87 octane 100% gas vs 93 octane with ethanol
I was wondering which one would yield better performance in my small block seeing as how I can get 100% gas in my town......I currently run the 93 with ethanol
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From: Pittsburgh PA
Car: 89 Iroc-z
Engine: 555 BBC Turbo
Transmission: TH400
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Re: 87 octane 100% gas vs 93 octane with ethanol
Depends on compression ratios and cam but i would feel confident in 93 oct over 87 for pure power.
If low compression deal then likely dont need 93 oct. Use least amount of octane as required to keep motor out of detonation with reasonable timing. Spark plug heat range and timing can bandaid too high comp for gas so you would want to look at exhaust temperatures and power output
If low compression deal then likely dont need 93 oct. Use least amount of octane as required to keep motor out of detonation with reasonable timing. Spark plug heat range and timing can bandaid too high comp for gas so you would want to look at exhaust temperatures and power output
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Re: 87 octane 100% gas vs 93 octane with ethanol
There was a brief blurb here.
It may or may not interest you.
http://www.ccfbg.com/forum/viewtopic.php?f=1&t=14401
It may or may not interest you.
http://www.ccfbg.com/forum/viewtopic.php?f=1&t=14401
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