Web Camshafts offer some of the best collection of Camshaft options for most applications compared to other camshaft manufatures. This is why they are preferred by most engine builders.
Web's available variations doesn't just span many different cam grinds, but also with manufacturing processes. These manufaturing processes are Regrinding, Hardwelding, and Billets.
Regrinding is when Web takes a OEM core and just regrinds the cam lobe from the original camshaft lobe. This is limited to camshafts that have a lobe big enough to make a new lobe with. They also use reduced base circles to get the higher lift expected from high performance camshafts.
Hardwelding: Hardwelding is a process that uses a OEM core and adds material to the lobe by welding on the lobe. Web's special welding alloy is for making a hard lobe that will not wear nearly as quickly.
Billet: This process starts with a new camshaft blank and does not require a OEM core to get the camshaft made.
In some applications, 2 or even all 3 of these options for the same application. This is what you need to know when trying to decide what option to go with:
Regrinds: This options requires you to send in a cam core or pay a core charge. This option also uses reduced base circles to increase the overall valve lift of the camshaft.
Hardwelding: This option requires you to send in a cam core or pay a core charge. This options involves adding material to the original lobes to allow for a bigger lobe to be ground into it. This option is considered by Web to be the best option in extreme racing applications.
Billet: This option is for people that don't have an OEM core available to send in or don't want to send there core in. This process starts with a new camshaft blank and the camshaft lobe is ground right on the new camshaft blank. Some billet cams do require you to send in the gears / flanges and bearings from the original camshaft/s.