273 Cam Shaft Wear?

So I found 2 camshafts made by Melling
...
MTD-1 (RV Torquer)
- 420/443 valve lift 270/280 advertised duration 204/214 duration @.050 112 degree lobe separation

I want to keep the 2 barrel BBD since it is the orginal carb. The big question is, would the RV cam kill this little 273? Or will it be the same motor we loved before with a little more getty-up around town?

That looks almost like a 340 cam. A bit big for a 2 barrel carb.