Is it really a question of octane with a low compression engine or is it more trying to find a non-ethanol fuel. Like John said "marine " gas, it's available at the pump around here. I used it to run my 327 on for the initial start up, costs a little more but non-ethanol.

~ Craig
1958 Viking 4400
"The Book of Thor"
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1960 Chevrolet C10
"A Family Heirloom"
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'59 Apache 31, 327 V8 (0.030 over), Muncie M20 4 Speed, GM 10 Bolt Rear... long term project (30 years and counting)

If you don't like driving yourTruck, you won't drive yourTruck..| Living life in the SLOW lane