Cam removal and install without removing heads?

Not saying it was the right cam, but I put a .474 lift cam in a stone-stock 318. Stock meaning stock heads, stock valve springs, stock everything. No issue with clearances. I actually did the same cam in a 318 with 360 heads. No issues.

I would install a cam with less than .460 lift without batting an eye. ya lose some lift due to poor valve train geometry anyways