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05-28-2016 06:52 PM #3
Exhaust crossover ports to aid in heating up the manifold when cold. You can usually get gaskets that block these ports off, but make sure that are metal block-off plates. Sometimes they are just the gasket material, and feel that these can burn thru.
If you are buying a manifold anyway, the Edelbrock 7105 Satin RPM Performer does not include this passage. Fel-Pro 1246 or 1247 should fit fine, just check which one for your application.Last edited by 69Bee; 05-28-2016 at 07:02 PM.
Dammit, another good ol boy gone. Condolence to the family. RIP Mike
RIP Mike Frade, aka 34_40