Is This an Indicator of Detonation?

The carbon that is on the combustion chambers, piston and along the top of the bore was dry, not oily. Some antifreeze got in the bore when I pulled the head, I cleaned out the water with a rag then soaked the bores in PB blaster so the bores don't rust. Then I took a picture, that is why the carbon is so wet looking in the picture. The runners of the intake ports are clean no evidence of oil. I'll post picture of a piston tomorrow.

There is a MP solid lifter cam in the 383, I used Comp Cams Pro Magnum Roller Rockers.