I will give you my take on the copper gaskets. Felpro has not made copper gaskets for our motors for a number of years now. I have used nothing but copper gaskets for 45 years. I have a stash of them but they are a few years old. Never a failure though. I used one in 2015 on one of my 261 builds. Within a year I started having over heating issues and I had a really hard time tracking it down. Finally decided to bite the bullet, rebuilt a spare head, removed the head on the motor on the assumption the head had a crack in it. Turns out, the copper gasket failed.
Rather than use another copper gasket from my stash, I purchased a fresh Felpro 7782B composite gasket. Installed perfectly, was not as fragile as the copper gasket, and most importantly, no failure and my over heating issue resolved.
So me, I would probably sell the copper gasket and get a fresh composite gasket. Just my opinion.
Last edited by Dragsix; 10/28/2024 4:34 AM.
