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You should consider screw down breathers, rather than push in. They will clear the baffle for one and are more efficent as far as not being able to push out. Some racers around here run a hose from both valve covers, tee into 1 line and end up on the fire wall into a puke tank that is vented. Myself, I just run 2 breathers on the covers to the check valves in the headers. No full exhaust but never an issue. I have never re-used old rings, that's just me I guess. You should consider maybe a taller valve cover and both breathers in front. But as you said, it worked good last year for you.



Who makes the screw in breathers? And how would I thread the valve covers for them?

I re-used the rings since they cylinders looked really good and the rings did NOT have a lot of mileage on them. My current valve covers are already pretty tall. I am thinking of adding a line to the front of each going to a puke tank.