Lifter Technology Selection

mopekid wrote
Roller vs. Flat tappet on a street perf car is almost a wash either way. True if FT is .903 optimized, not a chevy grind, not comp cams
FT is ahead of roller at shorter durations and soild has more area under the curve at longer durations
an inverse flank roller lets the roller match the FT for shorter seat timing at a given upper lobe or a larger upper lobe at the same seat timing

If you're already getting a modern high- performance camshaft you really won't be giving up much sticking with a FT in your 340.
if modern means a lobe optimized for a Chrysler - Comp has none- lots of other good grinders do and some such as Racer Brown and Engle have for years. Today also consider Howards and Bullet and Mike Jones IDk about lunati- double check every catalog grind against the grinders grind/ lobe spec list. SBC Chevy grinds are cheaper to grind but base circle is a mismatch. Base Circle on a BBC is similar to Mopar but lifter is much smaller
Did you notice that some grinders grind Mopar solids to a smaller base circle? why?