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Master X
03-24-2021, 10:51 PM
I keep hearing conflicting things on the maximum compression ratio that e85 is good for. I have an iron headed 406 that's 14.5:1 that i was hoping to run it on.

Lizardracing
03-25-2021, 10:09 AM
My carb guy has engines on 16:1 with E85.
14.5 is okay, just test and make sure your getting at least E75 if buying it at the pump.
PM if you have more questions.

Jking24
03-26-2021, 07:48 AM
Considering the power they make with it on boosted applications. I see no reason why their would be any limit with it on a n/a combo

slideiton
03-29-2021, 12:57 PM
E85 and higher is a huge help to any engine. I know in a few LS applications with changes to the intake and exhaust side of the engine, you can get 160+ HP gains.