Re: GM NOS valves.
Hi Matt:
The 2.11 or 526102 I think is a pontiac standard purple intake valve for a 77-79 T/A with a 6.6l. It lists that valve as part of the 77-79 W72 Firebird performance package.
I cannot find the other however.
Hope that helps with one , other is probally pontiac also but the number does not jive. Joe
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