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What turbo exhaust housing to order?

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  • What turbo exhaust housing to order?

    Have a Precision billet 76mm setup, T4, came off my old Supra build and want to put it on the Cobra. Setup is a 331, descent heads and gonna be switching to a cam/valvetrain that will let me spin to 7400 or so. What exhaust housing are you single turbo/V8 guys running on these cars? Its got a 1.32 on it but from what I understand thats way to big
    -1997 Supra- mid 8 second street car
    -1993 Cobra- 700rw
    -2012 CTS-V- 9 second daily driver
    -1991 Coupe- LSA/TT/4L80 in the making
    -2007 GSXR 1000- built turbo bike

  • #2
    alot of variables, but id say youll probably end up around .81-.96

    give dave a call, hes a ton of help on these things
    Ring and pinion specialist

    Comment


    • #3
      Originally posted by Junkie View Post
      Have a Precision billet 76mm setup, T4, came off my old Supra build and want to put it on the Cobra. Setup is a 331, descent heads and gonna be switching to a cam/valvetrain that will let me spin to 7400 or so. What exhaust housing are you single turbo/V8 guys running on these cars? Its got a 1.32 on it but from what I understand thats way to big
      mines an LS 6.0l but I have the 76 with a .96
      1969 GTO Judge Clone 6.0 liter LQ4 Turbo 4L60e on LS1tech

      1960 Chevy Sedan Delivery LS swap

      Comment


      • #4
        Originally posted by greenbullitt View Post
        alot of variables, but id say youll probably end up around .81-.96

        give dave a call, hes a ton of help on these things
        Dave who?
        -1997 Supra- mid 8 second street car
        -1993 Cobra- 700rw
        -2012 CTS-V- 9 second daily driver
        -1991 Coupe- LSA/TT/4L80 in the making
        -2007 GSXR 1000- built turbo bike

        Comment


        • #5
          Originally posted by greenbullitt View Post
          alot of variables, but id say youll probably end up around .81-.96

          give dave a call, hes a ton of help on these things
          if you can ever get a hold of him... I couldn't when I was building the GTO I tried a about 8 times one week.
          1969 GTO Judge Clone 6.0 liter LQ4 Turbo 4L60e on LS1tech

          1960 Chevy Sedan Delivery LS swap

          Comment


          • #6
            Originally posted by Junkie View Post
            Dave who?
            Turbo Dave

            1969 GTO Judge Clone 6.0 liter LQ4 Turbo 4L60e on LS1tech

            1960 Chevy Sedan Delivery LS swap

            Comment


            • #7
              I was just going to order the housing from Precision but yeah I'll give him a call and see what he thinks
              -1997 Supra- mid 8 second street car
              -1993 Cobra- 700rw
              -2012 CTS-V- 9 second daily driver
              -1991 Coupe- LSA/TT/4L80 in the making
              -2007 GSXR 1000- built turbo bike

              Comment


              • #8
                I ran a .68 and switched to a .96ar for more topend on my mild 306. MAde a little more HP afaik on my combo.

                And Dave had some issues with doing the right thing with customers last year, I think it's gotten better, but I wouldn't go to him.

                Almost like the Robert1320 situation.
                Ded

                Comment


                • #9
                  Originally posted by vadertt View Post
                  I ran a .68 and switched to a .96ar for more topend on my mild 306. MAde a little more HP afaik on my combo.

                  And Dave had some issues with doing the right thing with customers last year, I think it's gotten better, but I wouldn't go to him.

                  Almost like the Robert1320 situation.
                  How'd it spool? What trans?
                  -1997 Supra- mid 8 second street car
                  -1993 Cobra- 700rw
                  -2012 CTS-V- 9 second daily driver
                  -1991 Coupe- LSA/TT/4L80 in the making
                  -2007 GSXR 1000- built turbo bike

                  Comment


                  • #10
                    Sell the precision to some sucka online and get a real turbo
                    Full time ninja editor.

                    Comment


                    • #11
                      Originally posted by majorownage View Post
                      Sell the precision to some sucka online and get a real turbo
                      I've had really great luck with Precision turbos
                      -1997 Supra- mid 8 second street car
                      -1993 Cobra- 700rw
                      -2012 CTS-V- 9 second daily driver
                      -1991 Coupe- LSA/TT/4L80 in the making
                      -2007 GSXR 1000- built turbo bike

                      Comment


                      • #12
                        .96 will treat you well

                        What compression are you planning on using? Also what fuel? Both will effect the way a turbo spools.

                        Comment


                        • #13
                          Originally posted by Junkie View Post
                          How'd it spool? What trans?
                          full boost by 3300rpms with full exhaust and 3000rpms with open DP and it was a tko600 with a 3:27 rear.
                          Ded

                          Comment


                          • #14
                            Originally posted by Prime-Tuning.com View Post
                            .96 will treat you well

                            What compression are you planning on using? Also what fuel? Both will effect the way a turbo spools.
                            E85 and 9.0/1 Compression

                            Originally posted by vadertt View Post
                            full boost by 3300rpms and it was a tko600 with a 3:27 rear.
                            Nice I've got an 8.8 with 3.55's on 28" tires
                            -1997 Supra- mid 8 second street car
                            -1993 Cobra- 700rw
                            -2012 CTS-V- 9 second daily driver
                            -1991 Coupe- LSA/TT/4L80 in the making
                            -2007 GSXR 1000- built turbo bike

                            Comment


                            • #15
                              3:55s should be ok with a 28inch tire, lots of people run 3:27s to put more load on the turbo, but have mixed feelings of the taller tire.

                              Check out www.theturboforums.com for turbo tech, was turbomustangs.com.
                              Ded

                              Comment

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