CHRYSLER OEM-Valve Lifter 4049338

I have 11 of these lifters new in original packaging. Are they small block or big block? I googled the part# and everything comes up Chrysler tappet, but doesn't say what it fits.
Thanks in advance, WINGNUT

Cross reference calls em small block lifters. Says they fit AMC applications also

Must be SB Magnum lifters. If they fit AMC also that means they are set up for pushrod oiling.