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Are GT40Ps smog legal?
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[QUOTE]Originally posted by shade-tree: [QB] fasterdamnit is right, they are not smog legal for stangs "out of the box" as in from an explorer. On the explorer they are smog legal because the EGR setup is similar to SN-95 stangs. Either you drill the back of the heads to get to the exhaust port so that you can plumb that in to your EGR system or you cross your fingers and *hope* to pass smog. Your computer will throw the (EGR does not switch) code when you are bypassing this. How do I know this? I ran a set of GT-40P heads on my mustang last year, and this year I am running an SN-95 longblock ('94 cobra) motor in my car. For what it's worth, my old-school MAC 1 5/8" longtubes fit GT-40, GT-40P, E7TE, and Trickflow TW heads perfectly. Tonight I will find out if they clear a McCleod steel bellhousing. If they do, I nominate these headers for the "best header ever" award. :worship: [/QB][/QUOTE]
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