Yes, they have both smaller tolerances and smaller clearances. Not much smaller, but enough.
Googled some numbers, not really sure how true they are but:
318 crank play: 0,0005-0,0015 rod play: 0,002-0,0022
5.7 3gH crank play: 0,0009-0,002 rod play: 0,009-0,002
Both bigger and smaller but pretty much in the same ball park.
I wonder if a non 0W-20 SRT hemi have diffrent clearances?