Jon, me neither but I was always using a fresh copper gasket. Those are discontinued and while I used a brand new copper gasket, it was one I had in a full box of copper gaskets that was at least 30 years old. This time I thought, well I better get use to the new style gasket and so I jumped in and truth be told, not as fragile as the copper, less prone to bending and crinkling if accidentally dropped. Mind you, my 261 has forged pistons with a big giant lump that Bob Toros at venolia made me back in the 90s before he passed away so compression is pretty close to 9.75:1. Even at that compression, and the abuse I heap on it (I had that motor up to 5800 rpm last week at Beachbend Raceway Park in bowling green ky and not a single hiccup. So I think I will stick with what I can get in a fresh gasket.
Last edited by Dragsix; 08/15/2023 11:47 PM.