Well, sort-of. The husky 61 piston is different in the cut-aways under the wrist-pin boss, but the diameter and crown height is good. The 61 had the finger style ports cut into the cylinder wall, while the 630 had loop style ports.
Husky conversion is (I think) 262XP. The 61 piston in the 630 bore will be a real dawg for power
Probably better to either look around for entire aftermarket top end for 268 (more bore, more grunt) as your carb and boot will fit, or shell out for a 272 top end. Lots more power!
Or sell it and get another saw.
