Dyno tuned my 5.7 hemi hilborn today - 415 rwhp

hemijoejr said

I think the hood scoop leaned you out at 146mph. Ouch! The fuel supply up to par correct? I know it is but I'm just checking.

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bingo... dyno vs real world is apple and oranges... its about as useful as a desktop dyno, gets you in the ball park.

boy that a real bummer OP. does it look like a sleeve will be needed?