To be used with cams with up to 0.550" lift.
Must allow additional rocker clearance for '48-'65 Panheads
Made in the USA
Use with stock-style bottom collar, valve guides, valve with stock 3/8" stem and stock keepers
Compatible with thin-stem valves if thicker keepers that maintain correct valve stem-top collar engagement are used
Late single bottom collars are included for use in S&S cylinder heads for shovels and stock late '81-'85 heads
Garage
