Yes, my original question is regarding using E85 in a street machine, not racing at all. I do agree it is not a cure-all and there are other mods that need to be made, but lowering the compression ratio to get out of detonation due to todays crap gas just raises the hair on the back of my neck. There will still be expenses - carburetor, and new pistons to RAISE the compression ratio to get good performance and improve fuel mileage has been recommended to me. That also means new rods, which I was planning on anyway. One big negative I have come across is, as has been stated in several replies, has been the varying quality of the fuel. From what I understand they mix it differently early in spring and again in fall up here in the north woods to help with starting - possibly down to 70% ethanol. More gas and less ethanol helps starting. Luckily for me, I have several stations close by that have E85 at the pump for $1.79/gal, in addition to the 87 octane at $2.49, the 91 octane at $2.92, and the 110 octane at $6.99.

Thanks for all the opinions!

Abita airport? I have had some of the Abita Amber on one of my trips to Hattiesburg - good stuff!