Since I am upgrading my cobra to e85, I am curious what kind of power I could make with my Raptor n/a on the corn? I won't even ask this on the raptor forums cause they all think e85 is the devil.
This isn't exactly an answer to what you're asking but it's in the same ballpark. Take it for what it's worth.
I do remember reading a thread somewhere a few months back where a guy took a bone stock 5.0 F150 (with the exception of a K&N drop in) and did 2 sets of 2 runs on different days. One day he was running 93 octane and the I the other day he was running E85. On the E85 tank he showed an increase of 4 HP (peak) at the wheels over the 93 day.
This was the same dyno and same facility however the temps were 5 degrees or so different. So many variables it's hard to say how accurate that comparison is. And of course that's a stock 5.0 not a 6.2 but just wanted to throw that info in.
Yeah not to much to gain on a n/a engine. My 08 f150 is a flex fuel. The truck manual says horsepower goes from 300 to 310 if I remember correctly and torque goes from 365 to 390 on e85, you can feel the torque difference for sure though.