|Once the align bore is done and straight, we deck the block. Before we deck it would have to measure the deck height. We do this so we don't take too much off the block and so that we know the block is equal.
Deck height is measured from the main bore to the deck of the block. GM gets it close, but not close enough for us. The deck height from the factory on a small block Chevy is usually 9.025” to 9.033”. Our block has been taken down to 9.010”.