Ain’t no feeling like Oldsmobling!
Are they worth anything on a time slip? Is there anything to be gained by using them? I have some .077 intermediate steels with the turbulator holes, I thought about using them in a 400 build. I have 2 of them, if I decide to use them I need 2 more. Problem is, I have no idea where they came from or where I got them. Opinions?