Howards 558 first pic, MP 557 second pic. Just a tool for comparison sake.

MP 557 made a little more horsepower with a more peaky torque curve, while the Howards cam made a little less horsepower but a fatter torque curve starting
early in the RPM range.



howard558cam.jpgmp557cam.jpg
When it takes more than a sweet mullet to prove you rule at the trailer park..