Rocker/Valve cover finish closest to factory new

[aa/fd]

I think the fresh cast finish you are looking for is called "wheel abraid" which is typical of what Edelbrock and other manifold manufactures used. I believe it is a tumble process with an aluminum specific media done prior to any machining. It is part of the flashing and casting sand removal process. Glass beading and sand blasting do not generate the desired finish, it produces a dirt magnet texture not pleasing after a month or two. Chemical etching, wheel cleaner acid ect. can be effective but will discolor. What ever you do do not run it thru the dish washer and get caught. You'll never hear the end of it.

[gone002]

while we are on the subject....these go nicely with a clean valve cover

hand polished...i sell them on ebay....