In a low compression N/A engine, it's not going to be an issue.
If it was a small chamber head, with a domed piston, I'd be wanting to remove any possible sharp edges and possible pre-ignition points. If it was an engine with several stages of nitrous, I'd be looking at enlarging the compressed area, to slow down the flame front.
A dished piston down the hole, with a factory chamber isn't going to encounter such issues.
The plan is to install some aluminum heads, get compression between 9.5-10.0. Install a 22X-23Xish cam and a 6bbl setup. With that being said, Would CR close to 10:1 warrant the need for removal of sharp edges? Honestly it’s something I’ve always done even if it’s just the very sharp edges but the face of this piston really surprised me. Terrible design IMO.
To answer the question of history of the engine, it is all unknown to me, I bought the car a few months ago and I felt it was overcammed, Removed cam to identify and pick something more to my liking and began to find multiple issues.
