Thread: 350 streetable engine continued

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Originally Posted by bad brad

Thanks Tech. Do you know where I can get those seals? I couldn't find valve seals in the summit catalog!
Thanks again
Brad

Never having used oversized-stem valves in my life, I went looking for some oversized positive seals for the intakes for you but came up empty. Standard I.D. positive seals will tolerate up to about 0.005" oversize, but +0.015" valves won't work with standard seals. Unless someone else comes up with a different plan, you may have to use umbrellas on both intake and exhaust. What are the guys at the head shop where you purchased the heads using for valve seals? Can they source a +0.015" positive seal?