450 gas valve stem seals

Bob · Aug 19, 2013

Got a guy who wants valve stem seals on a gas 450. OEM did not use them. Anybody successfully used Sealed Power or other umbrella seals and have a P.N. to share?

D Slater · Aug 19, 2013

Some puts umbrella sells like was on some fords but I don't have a number. Perfect circle made some with a Teflon wiper but the valve guides needed cut down to install them. May be the same as the sealed power you mention.
Trying this set on a 350 head that will install without machining. Has a metal jacket with rubber inside that will fit without turning the guide OD down. Just measured the guide OD and looked up applications that listed stem size and ID of the big end. Then made sure they would clear the springs.
Was afraid they may be to much oil control, but so far so good. Haven't used long term enough to determine the end result though. Guides were still in spec but on the edge of the high side.

Bob · Aug 19, 2013

Thanks. I have a catalog listing them by dimension at the shop, nearly 30 miles away, and am hoping someone has a number so I can get some ordered before I get up to the shop.

Janicholson · Aug 19, 2013

Best solution and looks great. New cars are so equipped and lasting 3 times as long as before, Jim

450 gas valve stem seals

Bob

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D Slater

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Bob

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Janicholson

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