Update 10-17-12
Track results have shown a major improvement in head gasket life with the Tiger special alloy insert. In one case, the racer was getting minimal head gasket life, less than 15 passes under NOS use. The racer had 12 passes after the insert was installed, pulled the head after needing to reseat a valve, the head gasket looked great and reused the gasket, 20+ additional runs and the gasket still looks great. That's twice the head gasket life and can be reused.
Glenn Sedig ran all season on the same head gaskets with well over 50+ runs and the leak down is better between the center exhaust ports versus the outside cylinders.
All other users have no reports of head gasket failure to date.
We will be incorporating this modification in other Pontiac cylinder heads starting with the Edelbrock Performer as of next week.
Calvin Hill
Hill Performance
708-250-7420
Last edited by 65nss4spdGTO; 10-17-2012 at 09:44 PM.
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