Quote:
Originally Posted by Baron Von Zeppelin
All the GTO's with "rated 10.75" compression ratio specified 100 octane minimum ..
By the old octane rating method.
Today's 93 is equivalent to that.
Google will probably have a comparison factored between now and then.
Alcohol mixtures of today aren't doing us any favors though
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I respectfully disagree. At least with our California formulas. We have only 91 gasahol, and it is nowhere near adequate for a stock pre-'71 GTO engine. The last stuff we had that mine would run on and not complain much was the 94 octane low lead in the early '80's.