Way back when I owned them all. Just some info.
OE 346 42mm 45cc 14.7k for the 346.
NE 50.1cc new one is 14.1K and has more torque in the cut then OE 45cc. Owned several of each.
12" hard maple 1 cut times with same 3/8 chain on all saws.
3/8 7 was used because it will test the torque the saws have or dont have. Back then 325 chain didnt have a chance to cut with 3/8 chains.
But todays new 325 chains are sweet. Running newer stuff on all my small saws. Like C33 and newest 23RS
Choose your poison and go cut it dont matter just go cut.
stock husky 346xp 50cc 3/8 7T 5.63 5.62
stock dolmar 5105 with 5100 muffler 3/8 7T 5.59 5.50
stock partner 5000 , 3/8 7T 5.47 5.84 (30 years old) and tuned 2k lower WOT but same in the wood rpm.
stock 357xp, 3/8 7T 4.29 4.34