Wow, 74 hp that has to be better than expected? 550, air force velocity, vortex and exhaust? Should kick azz on the snow...
Built Motors 550 big bore kit with 14:1 piston
47mm RP Race Throttle Body.
Air-Force intake
Intake, intake boot, and head ported by Lloyds performance
Lloyd Performance cam
RP race 450sx complete exhaust
Vortex ECU programed by 2-Wheel Dyno-Werks.
GET ECU programed by Lloyd Performance.
Both ECU's produced the same results
Both the dyno in Idaho and the one in Washington showed nearly identical results on the same fuel.
Definitely better than expected!
Thank you to David, Karson, and Nels for help on this combo.
I am done for now...but have plans for a bigger throttle body, a fully balanced rotating assembly, and a more aggressive cam for next season.