Octane ratings
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OldRedFord
- Blue Oval Guru
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Octane ratings
Trying to figure out if 9.5-1 compression is 87 or 89 octane friendly.
Tim
1972 F350 flatbed drw c6/390
1967 F600 project truck
1972 F350 flatbed drw c6/390
1967 F600 project truck
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DuckRyder
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Re: Octane ratings
Not (nearly) enough information to answer...
Best go here and download the calculator and see what it has to say...
http://www.empirenet.com/pkelley2/DynamicCR.html
Best go here and download the calculator and see what it has to say...
http://www.empirenet.com/pkelley2/DynamicCR.html
Robert
1972 F100 Ranger XLT (445/C6/9” 3.50 Truetrac)
"An unarmed man can only flee from evil, and evil is not overcome by fleeing from it." -- Jeff Cooper
1972 F100 Ranger XLT (445/C6/9” 3.50 Truetrac)
"An unarmed man can only flee from evil, and evil is not overcome by fleeing from it." -- Jeff Cooper
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willowbilly3
- 100% FORDified!
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Re: Octane ratings
It is more cylinder pressure than compression ratio. Lobe separation angles can have as much effect as the compression ratio. Generally 9.5 would be getting toward higher octane.
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