You’ll need to make a few other modifications too, but the new 590 cam is said to be the key to transforming your Milwaukee 8 into a whole`nother animal.

S&S Cycles Press Release:

NEW –  590 Cam for Big Bore M8 Models

The M8 engine platform is capable of making massive power! It happily accepts big bore kits, stroker cranks and of course high lift cams. The primary supplier of that sort of go fast stuff is S&S Cycle, and they’ve just added a 590 lift cam to the mix. The new cam is designed to work with their 131” stroker kit and other huge bore combinations. Producing massive horsepower especially in the higher RPM range, the 590 is available in gear or chain drive and is specifically for use with monster bores, ported heads and high RPM, to make maximum horsepower!

Not recommended for stock bore engines! Check out the dyno charts for the hard numbers (146hp & 145tq on a 131” stroker build!) and for more info hit up the source.