Blueprint crate 408 long block- combos?

polarman said
I'm glad you brought that up. BP recommends 91 octane fuel. Here in the crap state I live in, almost everyplace has 10% ethanol fuel. The gas station I go to has non ethanol 90 octane that I use in all my small engines and my classic Buick daily driver. I have to figure out if I'm going to go with the non ethanol 90 and add octane boost, or the premium fuel from the other stations that have ethanol but are 91 or 94 octane. I HATE ethanol, it's hell on small engines and carburetors.
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Don't worry about the 1pt. octane difference. IMO, though you hate it, use the 91/93 E-10 and dont worry about it. Do not use octane booster. It isnt worth the time or expense. However, keeping a few bottles handy for that "Bad Gas" day isn't a bad idea. Not just for every tank fill.