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Old 01-29-2013, 12:25 PM   #10
Adam Strang
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Join Date: Dec 2001
Location: Jericho,Vt
Posts: 201
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Default Re: exhaust cross over (heat riser) fill

As I said before I pour from the intake side and use steel wool to block the passages in the exhaust runner.

I have dynoed it both ways and did see a difference.

It also gets rid of the dead skip sound Pontiac`s have with open headers.
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