Quote:
Originally Posted by w72
Short version: 91 octane non-ethanol or 93 octane 10-15% ethanol?
Wondering which fuel would be more forgiving on a 9.7:1 467, basically a Jim Hand build. 95cc 6x heads, 250cfm. Flat tops, all forged, RAIV cam, Rhodes lifters. 3750 lb T/A, manual, 3.70 rear, 28" tire.
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91 non-ethanol has more energy than 93 ethanol blend.