Welcome to FBBO from NorCal Sierras
this is the welcome wagon not really a tech Q&A section
there's lots of threads on the very subject & lots of opinions too
if it's a flat tappit hydraulic lifter or a flat tappit solid lifter
I'd use a break-in oil with a higher zinc counts 'ZDDP of 1200 ppm min.'
do the proper warm up & break-in procedures
2,000-2,500-ish RPMs on a *high idle, for like 15-20 min.s
do it outside have a hose handy,
maybe cap off at 1st when the thermostat opens
so if it gets hot
make sure no air in the system, close it back up
run it to get the full heat-cycles thru the engine, constant *high idle
after that
then let it completely cool down, 'all the way' after
And also
after initial camshaft break-in,
or during break in procedures if done incorrectly
1st times driving it, don't drive it at a constant RPM
for about 250-500 or so mile after
keep it varied, not at a steady RPM, that will help too
Then change the break-in oil at like 1,500 or so miles
to what you're going to use all the time,
if it's a Flat tappet make sure that it has ZDDP in it too
lots of horror stories about camshafts going bad
that's what I've done my whole time around these cars
never had any issues with cams going bad
good luck
