on my 216 head I am ready to install valve seals then the valves. The seals I see a o-ring style. Are these still the preferred seal or is there another that is better. When installing the o-ring seals inside of the valve guide, Do I use one at the top and one at the bottom or just use one seal?
Thanks,
Coltonk
1950 Chevy 3100 -216 engine