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Old 01-21-2013, 05:43 AM
75gmck25 75gmck25 is offline
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The heat riser can be blocked off if your weather is always warm, unless you have a hot air choke. The hot air choke for a Quadrajet has a hollow tube that slips down into the riser passage, so I'm sure you know whether you have one.

There may be gasket sets with complete block-off plates, but I've always heard of folks just cutting the plate out of an old tin can.

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