270H Series - 270 Duration A great cam for HP street machines. Has a rough idle in small blocks and a noticeable idle in big blocks, yet it will work with your power accessories and stock converter. Use with aftermarket manifold and 4BBL carb.
280H Series - 280 Duration Designed for serious street machines. We recommend the use of aftermarket converter, manifold, and four barrel carb. Has a rough idle.
292H Series - 292 Duration The 292H is a street/strip cam. It has a definite rough idle. B&M converter should be used.
305H Series - 305 Duration The 305 was ground for pro street and bracket racers. The advanced computer design delivers consistent E.T.’s.