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Premium Member
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Discussion Starter #1
Is there a gasket that goes between the manifold flange and the downpipe like a donut gasket or does it just bolt together like a ford ball n socket flange
 

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64-67 Expert
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8,561 Posts
On the GTO's, it's a tapered seat fit, with no gasket. The male taper on the manifold engages the female taper on the head pipe. Needs to be square to seal.
 
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