Quote:

So the number e85 is 85% ethanol 15%gas. E45 is 45% eth 55% gas. So you mix e85 with 89 octane unleaded to dilute the mixture from 85% to 45%. Gives you some benefits of ethanol without major carb mods. [/quote

What is the end result octane of E45?

72 RR, Pump gas 440, 452s, 3800 lbs, Corked, ET Radials,. 11.33@117.72. Same car, bone stock 346s, 9.5 comp, baby solid. 12.24@110.