Updated pics of chassis work and Engine update****

What caused the first one to go?

If you are asking about the heads, they are still usable but it appears as though the rockers were not clearanced enough to not hit the the spring retainer and it has taken out the valve guides. There would be a lot of repair necessary with welding to press new guides in and not leak. At this point it was decided to drop the coin on the Indys which I have wanted any way as I was power limited with the edelbrocks. If you are talking about the engine....it has had to many rering and hones and the piston to wall clearance is just too much for another re ring. Nothing more than normal abuse and running a small block on the ragged edge for 1000's of passes.