I have an old MTD mastercut snowblower 30" from the 80s that I have restored and the old original Tecumseh HMSK100 engine still gives me good surprising power but has several problems at the level of reliability lol. I have a Briggs & Stratton 20C414 engine that I picked up on a Craftsman blower at the trash that I have restored everything and it works perfectly but I have never blown with it, it's like a new. I intended to make a motor swap, I ordered a Sleeve adapter for 1 ", a new steel base. The base of the engine is bigger but I looked and I think I think have even the holes already pierced on the transmission of my snowblower. I should proceed this spring and I do not think I should have too many problems but I have questions... On my engine briggs it's written 11.5HP Basically, what is better than my current 10HP ;p but when I look at the specs it's only a 305cc while my tecumseh is 358cc. I know that the briggs is a much more recent ohv motor but is it's worth it and I'll see a positive difference in performance with this engine because it has a smaller cylinder? I live on the corner of a street and I have a lot of heavy snow with gigantic hem of snow and roof unloading, am I better to keep my old Tecumseh in terms of Performance? Is it true that a 305cc briggs is a 11,5hp or just a fake?