C3 Exhaust Systems - NCRS Discussion Boards

C3 Exhaust Systems

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  • Don B.
    Expired
    • January 3, 2017
    • 24
    #16
    Re: C3 Exhaust Systems

    Wow, thanks for that "exhaustive" explanation.

    Originally posted by Gary Bosselman (2575)
    Sorry, long post, but bear with me.

    NCRS Judging sheets for 68-72 for the exhaust is:

    8 Originality, 7 Condition; Exhaust Pipes and Heat Riser. Also judged is the self-locking nuts at the exhaust manifold, the triangle clamp flange and donut.

    6 Originality, 4 Condition; Exhaust Hangers (at transmission and at muffler) and all four Clamps. Also judged is the ground straps and fastener and the bolts holding the muffler at the rear hanger.

    8 Originality, 7 Condition; Mufflers. Also judged is the decals on the muffler.

    6 Originality, 4 Condition; Exhaust Tips. Also judge decals.

    According to the Judging Reference Manual, 8th
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      • Patrick H.
        Beyond Control Poster
        • December 1, 1989
        • 11608
        #17
        Re: C3 Exhaust Systems

        Originally posted by Gary Bosselman (2575)

        I am still looking for NOS or gently used GM 2” mufflers.

        Gary B
        Aren’t we all?

        PH
        Vice-Chairman (West), Michigan Chapter NCRS
        71 "deer modified" coupe
        72 5-Star Bowtie / Duntov coupe. https://www.flickr.com/photos/124695...57649252735124
        2008 coupe
        Available stickers: Engine suffix code, exhaust tips & mufflers, shocks, AIR diverter valve broadcast code.
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          • Bill S.
            Very Frequent User
            • April 30, 2002
            • 153
            #18
            Re: C3 Exhaust Systems

            Wern't the original pipes double wall tubing like all GM exhaust systems of the period?
            Bill Strobel
            Owner Independent Towing
            Fayetteville, NC
            1979 Corvette White/Red L-82 4 spd
            Only 4,200 miles
            Do It Right or Don't Do It At All
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              • Rick N.
                Very Frequent User
                • August 25, 2017
                • 141
                #19
                Re: C3 Exhaust Systems

                Originally posted by Bill Strobel (37873)
                Wern't the original pipes double wall tubing like all GM exhaust systems of the period?
                That's correct
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                  • Don B.
                    Expired
                    • January 3, 2017
                    • 24
                    #20
                    Re: C3 Exhaust Systems

                    Update: I ordered the system from Gardner today. They asked me to take pictures of everything I take off of the car (my system is original, rusty but original ) and they also want me to send some of the pipes to them. They particularly want photos of the clamps, which I plan to reuse if possible. I think they are in good shape. I now just have to find someone to re-chrome my tips. Would like to offer advice to me on what I should tell the people at the chrome place on how I want them done (to appear original)

                    I ended up ordering the aluminized system, I just cannot stand rust!
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                      • James G.
                        Very Frequent User
                        • August 22, 2018
                        • 783
                        #21
                        Re: C3 Exhaust Systems

                        I just had some bumpers plated at R&D Finishing in TN and I had them do them with only Nickel - Chrome, No copper and I left instructions not to highly polish or ROUND off the edges or buff away the profiles, Stripped with electrical current no grinding - there are fine scratches/tooling marks left.
                        I am very pleased with the results...
                        James A Groome
                        1971 LT1 11130 - https://photos.app.goo.gl/zSoFz24JMPXw5Ffi9 - the black LT1
                        1971 LT1 21783 - 3 STAR Preservation.- https://photos.app.goo.gl/wMRDJgmyDyAwc9Nh8 - Brandshatch Green LT1
                        My first gen Camaro research http://www.camaros.org/forum/index.p...owposts;u=4337
                        Posts on Yenko boards... https://www.yenko.net/forum/search.php?searchid=826453
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