GM performance part# GM 12464340
I tried to look up the number in the GM performance catalog, but it didn't come up. Is it possible that it is an old part#?
I am just wondering if anyone can tell me any specs about this manifold. I do know its for a vortec head application, but in terms of rpm range, etc... I have no idea.
TIA
-Andrew

 

If you got that off of the manifold itself, it's probably a casting # rather than a part #.
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Google results using that #:

http://www.sallee-chevrolet.com/Disc...tml?1099450277

 

Thanks for the link five7kid.
I actually did some extra surfing and came across that exact thread. But the problem I am having, is finding any tech specs for that manifold - rpm range and runner cfm - the reason I am asking is because I am comparing this manifold to the Edelbrock RPM performer which is rated between 1500-6500rpm. There is a used GM performance product manifold available, but I am not sure if it will fit may application.
-Andrew

 

It's probably close to an RPM manifold. The Fastburn is rated 385 HP at 5600 RPMs. A standard Performer would die at that level.

I understand Edelbrock makes the GM Performance manifolds with bowties on them. So, it's probably an RPM piece.

I assume you're looking for a Vortec manifold.