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Old 05-10-2018, 09:09 PM
440sixpack 440sixpack is offline
327 Rambler
 
Join Date: Jul 21, 2016
Location: oregon
Posts: 612
Are you changing them in the vehicle or do you have the heads off ? if they're off check the guides , if they're shot seals won't help a lot.

Stock valve seals aren't really seals they're more like oil deflectors. " umbrellas " actually. if they fit semi snug on the stem and have a diameter that covers the guide that's about all you're looking for.

If you're machined for positive seals then the choice of seals is more important. I like the viton ones they seem to work well. DO NOT use the white teflon seals unless you like smoke.
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