Roller cam/lifter problem

mope and rumble make some goodpoints
to match a FT profile with a roller you have to go inverse on the flank- grind with a small grinding wheel which the big production grinders with their CNC grinders do not want to do-- rough in on the Landis and finish on a small wheel
berco
Some claim inverse but it's inverse slightly with a big wheel
you can't go too aggressive off the seat with any roller due to the side thrust- you can go more aggressive with an inverse flank roller than a flat or almost flat flank roller
once you get up to say 100 thou you can get with the lift curve with the roller
A .904 Mopar profile looks very good against a HR or Street roller until the duration gets up there
remember that area under the curve and that duration at 200 and 300 are important as is the seat timing- which can be shorter with a .904 FT than with a comparable flat flank roller maybe 4 degrees on the opening and 4 degrees on the closing
not just race stuff
important to a low compression motor where you want to get the intake closed earlier and exhaust opened later
and especially important in a long rod engine where piston motion happens faster than in a short rod engine like those chevy cams are designed for.