dual exhaust

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  • montess408
    • May 2006
    • 391

    #1

    dual exhaust

    i was wondering if any body could tell me how to put a true dual exhaust on my 1988 z 24 with stock exhaust manifolds or if its even posible ??
    01 olds shilluette 3400/4T65-E stock for now
  • Superdave
    Been there, Built that.
    • Sep 2004
    • 5850

    #2
    Originally posted by montess408
    i was wondering if any body could tell me how to put a true dual exhaust on my 1988 z 24 with stock exhaust manifolds or if its even posible ??

    It's possible and it's been done before but totally not worth the time invested.

    just upgrade to a single 2.5" exhaust and swap your gen2 manifolds out for a set of 3400 manifolds (downpipe is 2.5" instead of 2"), hi-flow cat and a decent muffler... you'll really open it up then.
    Past Builds;
    1991 Z24, 3500/5 Spd. 275WHP/259WTQ 13.07@108 MPH
    1989 Camaro RS, ITB-3500/700R4. 263WHP/263WTQ 13.52@99.2 MPH
    Current Project;
    1972 Nova 12.73@105.7 MPH

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    • montess408
      • May 2006
      • 391

      #3
      can i use 3400 manifolds on 3.1 heads ?
      01 olds shilluette 3400/4T65-E stock for now

      Comment

      • Superdave
        Been there, Built that.
        • Sep 2004
        • 5850

        #4
        Originally posted by montess408
        can i use 3400 manifolds on 3.1 heads ?
        Yep, just make sure to use the 3400 gaskets as well.


        They fit perfect, and flow alot more than the 3.1 manifolds.
        Past Builds;
        1991 Z24, 3500/5 Spd. 275WHP/259WTQ 13.07@108 MPH
        1989 Camaro RS, ITB-3500/700R4. 263WHP/263WTQ 13.52@99.2 MPH
        Current Project;
        1972 Nova 12.73@105.7 MPH

        Comment

        • Syn
          The Master Piece
          • Oct 2005
          • 599

          #5
          x2, and just get a f-body muffler or something so u can have duals but fake haha

          thats what i got
          sigpic

          1993 Cavalier Z24, 3.1/3400 hybrid, crane 272 cam, LS6 springs,port and polish,2.5 exhaust to 80 series flowmaster,solid mounts

          Comment

          • AaronGTR
            boost lover
            • Jan 2004
            • 708

            #6
            x3.

            With that displacement motor and the placement dual exhaust is pointless. It's not a big longitudinally mounted V8. Also remember dual exhaust pipes add extra weight which slows you down. If you can meet your power needs with a single larger pipe thats the way to go.
            '97 Grand Prix GT 3800 (sold)
            '00 Grand Am GT 3400 supercharged
            13.788 @ 103.73 mph, 320whp 300 ft/lbs
            Gotta love boost!

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            • sharkey
              • Jun 2004
              • 2061

              #7
              i put dual exaust on mine simply for the fact that i could. it actualy started out after i built the headers, and i beilt the pipes comming back just before the cat, and though, hell it cant be that much work to run dual. well i was wrong, 2 weeks later it was finnished. i ended up using a pair of 3 way mini cats and a pair of flowmaster 60 series. the thing sounds like no other v6 ive heard. it has a very lumpy idle (though thats more atributed to the cam) like a v8, but sounds like a bumble bee in high rpm ranges (a tad raspy, not much though).

              does it actualy help??? i doubt it, i would likley have been able to acomplish the same thing with a single 2.5", but this sounds way cooler, and i love the reaction i get when people ask why i have a fake dual exaust and i tell em to look under the car.

              Comment

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