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327 rods in a 3.4?

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  • 327 rods in a 3.4?

    Is it possible to put 327 small jornal rods in my 3.4 and also does itchange the displacment?

  • #2
    Yes, you can, although you have to narrow the big end in order to fit 2 on a journal. If you keep the same length rods (5.7"), then no, displacement stays the same.
    -Brad-
    89 Mustang : Future 60V6 Power
    sigpic
    Follow the build -> http://www.3x00swap.com/index.php?page=mustang-blog

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    • #3
      thanks for the help

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      • #4
        Originally posted by bszopi View Post
        If you keep the same length rods (5.7"), then no, displacement stays the same.
        Rod length doesn't affect displacement anyway..

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        • #5
          You're right. I was thinking stroke with the change in rod length. But the storke will be the same even with a different rod length.
          -Brad-
          89 Mustang : Future 60V6 Power
          sigpic
          Follow the build -> http://www.3x00swap.com/index.php?page=mustang-blog

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          • #6
            Change in rod length = change in compression ratio.
            Andy

            sigpic

            fastest 1/8: 10.19@ 67.17
            fastest 1/4: 16.16@ 82.70

            62mm TB, 1.6 roller tip rockers, Ostrich 2.0, UD pulley, TB heater bypass, K&N, 180* stat, No cat, 99Grand AM dual cooling fans. 4T65E swap FDR 3.69, EP LSD, F.A.S.T. transmission controller, TransGo shift kit.

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            • #7
              Is there any advantages to using a Chevy 327 rod in a 3400??

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              • #8
                Originally posted by G-U-NOT View Post
                Is there any advantages to using a Chevy 327 rod in a 3400??
                Its the only alternative to getting custom made rods. They can be had for cheap and a 4340 forged rod will be stronger than a stock one. As said before, they will need to be narrowed, and the wrist pin size is different as well.
                2006 AWD TBSS 12.538 @ 106.92 1.66 60' Bolt-ons only

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                • #9
                  advantage is ability to find much stronger rods and decent prices.
                  Andy

                  sigpic

                  fastest 1/8: 10.19@ 67.17
                  fastest 1/4: 16.16@ 82.70

                  62mm TB, 1.6 roller tip rockers, Ostrich 2.0, UD pulley, TB heater bypass, K&N, 180* stat, No cat, 99Grand AM dual cooling fans. 4T65E swap FDR 3.69, EP LSD, F.A.S.T. transmission controller, TransGo shift kit.

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                  • #10
                    how about the bearings? if the big end has to be machined would i use the 3.4 bearings? or are the oil spouts in a different spot?

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                    • #11
                      before picture and after picture of machining. stock bearings will work.
                      Attached Files
                      [SIGPIC]
                      12.268@117... 11's to come!
                      turbo 3400: 358whp and 365tq at 9 psi
                      ASE Master Technician. GM Certified.
                      http://www.youtube.com/watch?v=7ibU1k8UZoo
                      http://www.youtube.com/watch?v=GUqJyopd720

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                      • #12
                        Originally posted by series8217 View Post
                        Rod length doesn't affect displacement anyway..
                        Exactly Correct... And here is a nice "Reason Why..." sort of article on the broader subject...

                        Last edited by 60dgrzbelow0; 10-26-2009, 08:49 PM.

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                        • #13
                          If you go this route, have your SBC bearings narrowed also. I got SBC 6" H beam in my 3.4 and that's what we did to the bearing for proper fitment.

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                          • #14
                            Originally posted by Lilchief View Post
                            If you go this route, have your SBC bearings narrowed also. I got SBC 6" H beam in my 3.4 and that's what we did to the bearing for proper fitment.

                            Or you have to have the anti-rotation tangs machined into the rods and caps and use the 60* bearings.

                            Off Topic: Chief, did you end up getting that Crane you were spying?
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                            • #15
                              factory bearings will work. theres a slight offset, but according to my machinist, its not the first time seeing it, and it will not be an issue. ill find out for sure though
                              [SIGPIC]
                              12.268@117... 11's to come!
                              turbo 3400: 358whp and 365tq at 9 psi
                              ASE Master Technician. GM Certified.
                              http://www.youtube.com/watch?v=7ibU1k8UZoo
                              http://www.youtube.com/watch?v=GUqJyopd720

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