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International Automotive Technicians Network
Re: Octane and horsepower question
Posted to R.P.M. Forum on 4/18/2018

I would stay away from E85 unless you were track racing every weekend. I run a 72 Torino with a Rousch 521 cid with 12.8:1 compression. I mix 93 octane with a 25% aviation fuel. Total timing advance at 32 degrees. Never a spark knock issue but I am running a ... Login to read more.