The block off plates for those heat passages should be in the intake gasket pkg. that you buy. Or, I know on the two Edelbrock intakes that I have, both the single and dual plane, the mounting rails on the sides of the intake cover these heat risers so you dont have to worry about it .. Either way is OK.
454 Engine
Hi, I know I might sound stupid but I have a problem. I have a 454 out of a 1971 - 1975 truck and It came with a wieland stealth intake manifold on the side. I went to install and found this wierd square looking ports on the heads. regardless to say when i went to match up the intake and the cylinder heads the intake did not have any ports matching up to this thing. I enclosed a photo to show you the type of head I am using.
http://www.edelbrock.com/automotive_new/mc/heads/chevrolet_bb_rpm.shtml
http://www.edelbrock.com/automotive_new/mc/heads/chevrolet_bb_rpm.shtml
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