[Purdy Swoft]

When I mention model A lifters, I'm not talking about adjustable lifters, I am refering to original model A lifters. Its just common sense to me if the length of the original model B lifter is longer than the original model A lifter, This in itself will cause a problem with valve adjustment clearance if model A original lifters are used with a model B cam, especially if it is a regrind, regardless of lifter base size. It seems to me that to make up the differance in length, if original model A lifters were used with a B cam would require cutting the seats deeper or useing longer, as in modern style valves.

Now If Jose Cartin, that started this thread is going to try and use model A lifters with a model B cam and use the valves that are in his engine he will end up with a huge clearance between lifter and valve stem. That is unless someone has previously installed modern valves with longer stems or he plans on sending it out for some machine work.