Whats up with these exhaust valves?
These came out of a 13-1 iron headed small block. They have break in plus a couple 1/8 mile passes on them. Pistons and plugs looked great. They are Competition Products severe duty valves.
These came out of a 13-1 iron headed small block. They have break in plus a couple 1/8 mile passes on them. Pistons and plugs looked great. They are Competition Products severe duty valves.