SA exhaust holes/vents?
1 Attachment(s)
Can someone tell me what these are and what they do? I noticed my later model (85) block doesn't have them. Also can I run an FB Racing Beat header on this SA block which looks like will cover up the holes?
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Secondary air injection ports; part of the emissions system when using Thermal Reactor exhaust. Must be a pre-81 engine?
It's OK if the header blocks them, just be sure to use blocking plates for the ACV and Heat Exchanger ports on the intake manifold, too. |
The header blocks the holes up. I'm running the same 12A engine with an RB header in my car now.
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Should I use the SA header gasket or the FB one?
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Won't really matter much since the header plate blocks off the other side of the hole. The FB one is probably cheaper or easier to find. Just make sure it's for a 12A.
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Thanks for the help.
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I don't have any of the factory stuff. The car I bought came with the 12A and the RB street header and RB gasket.
Well the car came with a blown up 13B but thats beside the point. :D |
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