Cam question?

[Wichers123]

What does it mean that retainer to guide clearance will need to be modified to run these cams?

http://www.compcams.com/Company/CC/cam-specs/Details.aspx?csid=969&sb=0

 

[white95]

[MENTION=10730]duff daddy[/MENTION]

 

[96blak54]

The keepers and retainer that hold the valvesping in place will have contact with the top of the valve guide (actually the valve seal will be the first to be injured)

 

[duff daddy]

^^^ that