I've got 2 C20XE engines built in different years, one has 26,00 mm high lifters, the other one 26,50 mm high ones, they look a little bit different inside. Can I use your hydraulic lifters CMFL-1 on both engines with no trouble?
Our CMFL-1 follower is a genuine GM supplied component, there were variations on some GM parts but they are all designed to run on all the XE engines and this the follower is the one we have used for many years. It is the lightest version and should run successfully in any GM engine of this type.
We never use re-ground cam profiles as the base circle of the camshaft has to get smaller to do this. One of the problems associated with re-ground cam profiles is that the follower can sit too high in the cylinder head potentially causing 2 problems; the first being the cam follower runs out of travel and the second is that the oil supply does not reach the follower correctly and therefore does not fill adequately. These problems are normally discovered after installation of the cam profile and when fitting new cam followers, the owner believes it is a problem with the follower when in fact it is the cam re-grind itself.