This engine will be using our #9 cam grind. It is similar to the 153x1 but has a bit more lift and duration, particularly on th

This engine will be using our #9 cam grind. It is similar to the 153x1 but has a bit more lift and duration, particularly on the exhaust side. This helps it carry power up to 9500rpm without sacrificing midrange, like the old 174x8.