Thanks to a post by Kirbert I now have a source of Teflon stem
seals. However I see that some people are talking about using
Viton which supposedly lets some oil down the stem. These are also
available through the same supplier, silver-seal Is there any more
information out there regarding the best option.
I can report that I drove my '83 for thousands of miles after
installing those Teflon stem seals and had no problem with them.
Didn’t burn oil at all, ever. If I were doing the job again, I’d go
with the Teflon stem seals again.
I did apply some graphite to the valve stems during installation,
dunno if that did anything. My figuring was, if no oil ever came
down the stem, maybe the graphite would stay put, and if oil did come
down the stem the graphite wouldn’t be needed.
One thing is definite, though: You won’t be using any high-lift cams
with the Teflon seals. They are taller than the OEM seals, and leave
just barely enough clearance for the standard 3/8" lift. If you’re
planning more lift than that, you’ll have to use the viton seals.
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