Quote:
Originally Posted by Kenth
1965 389 GTO/ 421 H.O. #77 heads with added 7/16" studs and guide plates hopefully used with hardened push rods. No valve spring oil shields, may have positive valve guide seals installed?
Looks nice!
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When I had the 421 rebuilt, I had the heads machined for Viton valve stem seals and had them installed, and it already had hardened valve seats.
Thanks for the reply!