Originally Posted by jmaine83
yes table top flat but the outside edges a lil thicker
Then it's not table-top flat, it's a dished piston. I don't care for those OEM pistons because of the lack of a suitable squish pad.
Here's a flat-top with valve reliefs....
Here's a typical Chevy piston, two eyebrows and a dish. You can see that there is insufficient material to mate up with the underside of the cylinder head to create a good squish....
Here's a flat-top with no valve reliefs, you buy them and cut your own valve reliefs depending on valve angle in the heads and valve lift....
Here's a KB dished piston. Note the generous squish pad on the left side of the photo that mates up with the underside of the cylinder head...