HUNTER'S 1978 GMC C15 SIERRA BUILD THREAD
We got in contact with an old friend of my dads here locally and asked if we could bring in our block to get cleaned. He let us come in one Friday to get everything cleaned up, I think it cost $85. It's kinda cool how well everything cleans up.
Some of the guys at the shop were saying they never saw rods that looked like that before, my dad said it was because in the factory they took off too much material and brass was added to even them out.