360-1 Casting better?
First pour out of a ladle is less porosity . On a block with a low number the cylinder usually sonic test better do to this reason. Porosity can cause core shift. I had a X-block 318-11. The porosity on this block was terrible and they are high nickle . You can see on some pic's the right rear lifter bore was welded back in with a spray weld. You can see the paint burned off where welded. Most of the lifter bore was missing from porosity when we received it. My original 318-3 X-block conveniently disappeared at "Shady Dell". This was the replacement. We had it repaired and sold it.
I have many 340 blocks here You can visually see the difference in the blocks after hot tanked. -1 blocks are smooth and shiney. Highly sought after in the Sprint car world are the -1 blocks.
First pour out of a ladle is less porosity . On a block with a low number the cylinder usually sonic test better do to this reason. Porosity can cause core shift. I had a X-block 318-11. The porosity on this block was terrible and they are high nickle . You can see on some pic's the right rear lifter bore was welded back in with a spray weld. You can see the paint burned off where welded. Most of the lifter bore was missing from porosity when we received it. My original 318-3 X-block conveniently disappeared at "Shady Dell". This was the replacement. We had it repaired and sold it.
I have many 340 blocks here You can visually see the difference in the blocks after hot tanked. -1 blocks are smooth and shiney. Highly sought after in the Sprint car world are the -1 blocks.
