LT1 Based Engine Tech 1993-1997 LT1/LT4 Engine Related

Best Octane for Aluminum heads/intake

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Old 06-09-2004, 08:29 PM
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Best Octane for Aluminum heads/intake

I am wondering what the best octane is to run in a z28 with aluminum heads,lt4 intake, and a 4lb supercharger?? Should i go with 87,89,OR 93 .. Iknow some cars run better with some set ups.. just wondering if any one has any opinions... thanks, also if you can give an explanation to why which one..
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Old 06-09-2004, 08:32 PM
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Take it to the track and follow these instruction starting with low grade fuel....

http://www.pontiacpower.com/faqs3.htm

The ability to make tuning changes would be a big plus here.

-Mindgame
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Old 06-09-2004, 09:07 PM
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Use 93.

Rich Krause
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Old 06-09-2004, 09:34 PM
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Another vote for 93. It's not much more price wise to a whole tank and you just can't go wrong.
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Old 06-09-2004, 09:48 PM
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Originally posted by rskrause
Use 93.

Rich Krause
Listen to the man.
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