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Original Message
RE: manifold vacuum
By Morgan - 12/11/2000 2:10:19 PM; IP 204.71.24.151
Hi Steve,

I also have a 67 GT-500 (03217). And I experienced the same issue with low vacuum. I felt the brakes could work beeter and we suspected low vacuum. We tested in idle and it had 11 pounds. We dropped in in drive and if i recall it dropped down below 7 pounds. Keep in mind that depending on the shape of the holleys you may have vac leaks there also.

Are you experiencing any backfiring through the carbs?
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Collapse <a href=../ForumFE/reply.aspx?ID=3581&Reply=3581><img src=../images/reply.png width=30 height=10></a>&nbsp;<a href="#" id="anchor3581" onclick="return false;">manifold vacuum</a>&nbsp;-- <font color=#0000ff>Steve Boulay, <i>12/11/2000</i></font><script type="text/javascript"> new HelpBalloon({ dataURL: 'replyb.aspx?ID=3581', contentMargin: 60, icon: $('anchor3581') }); </script>  manifold vacuum -- Steve Boulay, 12/11/2000
 RE: manifold vacuum -- RC Moser, 12/11/2000
RE: manifold vacuum -- Morgan, 12/11/2000
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