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10-28-2017, 09:47 PM
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Registered User
Join Date: Jul 2011
Location: Calgary, Alberta
Posts: 153
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Exhaust diameter for a 71 stock GMC
I am looking to see what the stock diameter ( the diameter that the muffler manufactures want, not sure if ID or OD) for a bone stock 1971 GMC with a 350 and a 4BBL carb. I dont have the measuring tool to clamp on and find the diameter.... My best guess is 2.5#. Looking to see what you experts know.
Thanks!!!!!! |
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