Thread: 66 GTO headers
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Old 05-16-2026, 07:44 PM
1950Mercury 1950Mercury is offline
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Default 66 GTO headers

I am really starting to lean toward the Ram Air H O exhaust. So far from what I’ve read on a mild engine they perform well to about 5,000 rpm with good low end torque. And it seems usually only need to raise engine slightly and re route battery cable. For those running the H O manifolds how do they work out?