IMM Engines 408 build

I've seen engines that had 40 more HP than one off of IMM's dyno get their lunch money taken by the lower HP engine. MPH was not close to the higher engines claim.

Dyno numbers are nothing, some guys jack the numbers to sell engines. Big #'s are more expensive or a important when the dickswinging contest starts. :)

Real world running is what counts. You'll never know how it would have run since the build was changed up.