NOS stock 340 cam from wholesaler worth the risk?

Small Block Mopar Engine

  1. dbphemi

    dbphemi Well-Known Member

    Messages:
    727
    Likes Received:
    120
    Joined:
    Oct 26, 2006
    Location:
    Montgomery,IL
    Local Time:
    4:19 AM
    I found resale shop online that specializes in nos car parts that has this 40 year old sealed power replacement 340 cam . I looked up part numbers and verified that it’s the correct cam. the only thing i’m concerned about is condition. I looks like there might be a small amount of rust on the rear journal. What y’all think about this cam?

    A29A704B-02F0-41A3-BDA0-F297D5E6BADF.jpeg
     
    • Like Like x 3
    • toolmanmike

      toolmanmike Moderator Staff Member FABO Gold Member

      Messages:
      68,663
      Likes Received:
      62095
      Joined:
      Jan 18, 2006
      Location:
      Iowa
      Local Time:
      4:19 AM
      What's the number? It is a replacement and not a exact copy of the original. It should be close. The bearing surfaces can be polished. The lobes need to be in good shape though.
       
      • Agree Agree x 3
      • Like Like x 1
      • MOPAROFFICIAL

        MOPAROFFICIAL FABO Gold Member FABO Gold Member

        Messages:
        11,692
        Likes Received:
        11285
        Joined:
        Jun 1, 2016
        Location:
        Oceanside ca.
        Local Time:
        2:19 AM
        Who's to say you can't buy that cam brand new right now?
        The rust is more than likely cosmoline
         
        • Like Like x 3
        • Bewy

          Bewy Well-Known Member

          Messages:
          2,423
          Likes Received:
          1542
          Joined:
          Jan 1, 2021
          Location:
          Australia
          Local Time:
          7:19 PM
          Buying a 25+ year old cam would be less likely to wipe lobes than today's crapanium stuff. Sealed Power was also a top quality brand name. I would buy it.
           
          • Agree Agree x 12
          • dbphemi

            dbphemi Well-Known Member

            Messages:
            727
            Likes Received:
            120
            Joined:
            Oct 26, 2006
            Location:
            Montgomery,IL
            Local Time:
            4:19 AM
            CS-644
             
            • Thanks! Thanks! x 1
            • olkingcool

              olkingcool olkingcool

              Messages:
              62
              Likes Received:
              9
              Joined:
              Aug 11, 2015
              Location:
              new jersey
              Local Time:
              5:19 AM
              what r u asking
               
            • RustyRatRod

              RustyRatRod I was born on a Monday. Not last Monday. FABO Gold Member

              Messages:
              88,261
              Likes Received:
              71370
              Joined:
              Jun 7, 2010
              Location:
              Georgia
              Local Time:
              5:19 AM
              I found that cam NEW still in a couple places, so it might be just old enough to get the box yellow.
               
              • Like Like x 2
              • dbphemi

                dbphemi Well-Known Member

                Messages:
                727
                Likes Received:
                120
                Joined:
                Oct 26, 2006
                Location:
                Montgomery,IL
                Local Time:
                4:19 AM
                i pulled the trigger, fingers crossed . Here’s a pick of the box.

                D2899C62-0B27-46DD-BBE7-4E31AAB57964.jpeg
                 
                • Like Like x 1
                • Thanks! Thanks! x 1
                • 4mulas

                  4mulas Fixem'up

                  Messages:
                  600
                  Likes Received:
                  208
                  Joined:
                  Dec 23, 2006
                  Location:
                  Pacific Northwest
                  Local Time:
                  2:19 AM
                  Pretty small cam, why bother?

                  journal can be polished. That on doesn’t look bad
                   
                • dbphemi

                  dbphemi Well-Known Member

                  Messages:
                  727
                  Likes Received:
                  120
                  Joined:
                  Oct 26, 2006
                  Location:
                  Montgomery,IL
                  Local Time:
                  4:19 AM
                  putting back together original engine in my 69 340 4speed swinger .I’m trying to make it all stock.
                   
                  • Like Like x 2
                  • autoxcuda

                    autoxcuda Well-Known Member

                    Messages:
                    8,224
                    Likes Received:
                    2684
                    Joined:
                    Apr 6, 2007
                    Local Time:
                    2:19 AM
                    What did you pay for it?

                    Shouldn't be much more that a new one. I think the NOS lifters with it, would be a big plus to avoiding cam going flat.
                     
                    • Agree Agree x 2
                    • autoxcuda

                      autoxcuda Well-Known Member

                      Messages:
                      8,224
                      Likes Received:
                      2684
                      Joined:
                      Apr 6, 2007
                      Local Time:
                      2:19 AM
                      Careful. Are you assuming you're getting cam exactly like the one year only '68 4-speed cam?
                       
                      • Like Like x 1
                      • autoxcuda

                        autoxcuda Well-Known Member

                        Messages:
                        8,224
                        Likes Received:
                        2684
                        Joined:
                        Apr 6, 2007
                        Local Time:
                        2:19 AM
                        I guess for $123 shipped it's ok. It sounds like a generic 68-74 340-360 replacement cam. Does he have some old stock lifters???

                        Friend wiped out two identical Comp XE268 Cam and lifter from Summit within weeks on his run stand.

                        Then I sold him an old MP Cam and Lifter set I've had since 1999 or so. No issues at all on run stand. Motor has been running fine for 2 years now.

                        upload_2022-8-5_17-2-25.png
                         
                        Last edited: Aug 6, 2022
                        • Like Like x 2
                        • dbphemi

                          dbphemi Well-Known Member

                          Messages:
                          727
                          Likes Received:
                          120
                          Joined:
                          Oct 26, 2006
                          Location:
                          Montgomery,IL
                          Local Time:
                          4:19 AM
                          69 4 speed came with same cam as auto #2899206 . this is a replacement for that cam. i dunno how close to factory it will be. If i can find a factory nos cam i’ll buy one of those too lol.
                           
                          • Like Like x 2
                          • dbphemi

                            dbphemi Well-Known Member

                            Messages:
                            727
                            Likes Received:
                            120
                            Joined:
                            Oct 26, 2006
                            Location:
                            Montgomery,IL
                            Local Time:
                            4:19 AM
                            i have a set of nos lifters
                             
                            • Like Like x 2
                            • autoxcuda

                              autoxcuda Well-Known Member

                              Messages:
                              8,224
                              Likes Received:
                              2684
                              Joined:
                              Apr 6, 2007
                              Local Time:
                              2:19 AM
                              Nice.

                              The old Mopar Performance Cam P4452782 in a old box with a before 2005 or so would be a good bet too. It had same specs as stock 268-276-44 with .429/.444" lift and 114 centerline.
                               
                              • Like Like x 2
                              • toolmanmike

                                toolmanmike Moderator Staff Member FABO Gold Member

                                Messages:
                                68,663
                                Likes Received:
                                62095
                                Joined:
                                Jan 18, 2006
                                Location:
                                Iowa
                                Local Time:
                                4:19 AM
                                Not a bad cam and a older one might be better quality but they do make new ones that are very similar.
                                 
                                • Agree Agree x 1
                                • dbphemi

                                  dbphemi Well-Known Member

                                  Messages:
                                  727
                                  Likes Received:
                                  120
                                  Joined:
                                  Oct 26, 2006
                                  Location:
                                  Montgomery,IL
                                  Local Time:
                                  4:19 AM
                                  yeah, i wish they were easier to find. when i bought my swinger in the 90’s you could just go down to the local dodge dealer and buy a cam and lifters and not worry about tearing up your engine.
                                   
                                  • Agree Agree x 3
                                  • 1966Post

                                    1966Post Well-Known Member

                                    Messages:
                                    358
                                    Likes Received:
                                    187
                                    Joined:
                                    Mar 8, 2015
                                    Location:
                                    Wisconsin
                                    Local Time:
                                    4:19 AM
                                    But it. Lube it well. Follow a good start up break-in procedure and you’ll be fine. And have a big ole smile. Lots of smart experienced guys on this site to help if needed. To many over think things. You know what your plan is. Stick to it….
                                     
                                    • Like Like x 2
                                    • Agree Agree x 2
                                    • dbphemi

                                      dbphemi Well-Known Member

                                      Messages:
                                      727
                                      Likes Received:
                                      120
                                      Joined:
                                      Oct 26, 2006
                                      Location:
                                      Montgomery,IL
                                      Local Time:
                                      4:19 AM
                                      I built 3 or 4 engines back in the day and had no issues with camshafts. Seems like a lot of people are having problems with the quality of parts lately.
                                       
                                      • Agree Agree x 4
                                      • Ironracer

                                        Ironracer Gearhead

                                        Messages:
                                        7,027
                                        Likes Received:
                                        5724
                                        Joined:
                                        May 8, 2020
                                        Location:
                                        Tampa Bay Florida
                                        Local Time:
                                        5:19 AM
                                        Yep, Chinese Junk. Probably by Design, why should they care?
                                         
                                        • Like Like x 1
                                        • RustyRatRod

                                          RustyRatRod I was born on a Monday. Not last Monday. FABO Gold Member

                                          Messages:
                                          88,261
                                          Likes Received:
                                          71370
                                          Joined:
                                          Jun 7, 2010
                                          Location:
                                          Georgia
                                          Local Time:
                                          5:19 AM
                                          They still make the same part number. Look it up.
                                           
                                        • RustyRatRod

                                          RustyRatRod I was born on a Monday. Not last Monday. FABO Gold Member

                                          Messages:
                                          88,261
                                          Likes Received:
                                          71370
                                          Joined:
                                          Jun 7, 2010
                                          Location:
                                          Georgia
                                          Local Time:
                                          5:19 AM
                                          That was a goodun. I always wished they made the 4 speed cam.
                                           
                                          • Agree Agree x 1
                                          • krazykuda

                                            krazykuda Well-Known Member FABO Gold Member How-To Section Editor

                                            Messages:
                                            62,918
                                            Likes Received:
                                            29887
                                            Joined:
                                            Aug 20, 2007
                                            Location:
                                            Orland Park, IL
                                            Local Time:
                                            4:19 AM

                                            There is a cam that's very close to the stock 68 340 4 speed cam available currently....

                                            Reproduction 340-4 Speed Cam
                                             
                                            • Thanks! Thanks! x 2
                                            • Like Like x 1
                                            • rustycowll69

                                              rustycowll69 Well-Known Member

                                              Messages:
                                              2,714
                                              Likes Received:
                                              1437
                                              Joined:
                                              Feb 19, 2016
                                              Location:
                                              Pacific northwest
                                              Local Time:
                                              2:19 AM
                                              If I were going to install a flat tappet cam, I would make absolutely sure the lifter bores are clean and that the new lifters fit the bores freely and can turn freely. Follow the cam manufacturer's directions for lubricating the new cam with break-in lube. For hydraulic lifters you HAVE to check that the lifter preload is correct. You cannot assume that a stock replacement cam will have the correct preload with the stock pushrods, because it could be ground on a different base circle which would affect lifter preload. DO NOT soak the new lifters in oil, DO NOT pump the new lifters up outside of the engine installation. The lifters will fill just fine on initial startup. Another thing to watch for is lifter and pushrod spin. I have old valve covers which I temporarily install for initial startup, which I have modified with holes so I can visually verify that the pushrods are spinning. If the lifters don't spin the lifter/cam lobe will wear prematurely, and you'll send a bunch of metal thruout the engine, and you'll be tearing back into that engine.
                                               
                                              • Like Like x 2
                                              1. This site uses cookies to help personalize content, tailor your experience and to keep you logged in if you register.
                                                By continuing to use this site, you are consenting to our use of cookies.