Richard150MPH
Veteran Member
I was hoping to order up the rest of the gaskets and seals to assemble my 327 lower end tonight.
Every rear main seal on Summit's site states "Not for racing" even at $40.58.
Most are rubber, a few are silicone, at least one is Viton.
Back in my Corvair days Viton was THE hot ticket to avoid leaks.
Tried looking for a Race rated seal, none came up.
So what is the majority opinion here for rear main seal material and brand?
Every rear main seal on Summit's site states "Not for racing" even at $40.58.
Most are rubber, a few are silicone, at least one is Viton.
Back in my Corvair days Viton was THE hot ticket to avoid leaks.
Tried looking for a Race rated seal, none came up.
So what is the majority opinion here for rear main seal material and brand?