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  • #1

    3900 rocker arms

    I was reading a thread in the performance section about a 3900 build for his 06 Mali. He mentioned the rocker ratio was 1.7. Can you use these rocker arms on 3100 heads? He also said that the engine was vvt, is it still an OHV engine. I'm not that familar with the high value engines. Thanks
    1998 Chevy M VIN Mali LS with 99 Olds J VIN 3100 Swap

    Sealed power skirted hyperuetectic pistons, LS6 Valve springs, Manley keepers and retainers, Custom short ram, header back, Tuning by Performance Dyno, 3400 TB, MSD Coils and wires, A/C Delete, Gasket matched heads and intake manifolds, 180 hypertech stat, Cat delete, 2 1/2" header back.
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  • #2
    you missed this post i guess. guess we will just have to wait till the rockers get produced for the 3x00 engines.
    Originally posted by gectek View Post
    the 3900 rockers will not fit in any way shape or form to the nonVVT engines. sorry. already been tried, but a few and myself as well. Im not from missouri, but you gotta show me anyway. lol.
    sigpic
    99 Grand Am GT
    3400/3500 -Solid trans mount--TCE 65mm T-body---85mm LS2 maf---1 1/4' TCE intake spacers with 3400 upper--SLP Catback with flowmaster 80--TOG headers
    Modded 3400 lifters with LT1 springs---Comp Cams 26986 Springs
    1357 cam 227 233 .050 dur     515 515 lift 112 lsa
    15.232@88.85mph on stock 3400---New time to come

    Comment

    • #3
      I completely missed that post, should have read more. Sorry, thank you though
      1998 Chevy M VIN Mali LS with 99 Olds J VIN 3100 Swap

      Sealed power skirted hyperuetectic pistons, LS6 Valve springs, Manley keepers and retainers, Custom short ram, header back, Tuning by Performance Dyno, 3400 TB, MSD Coils and wires, A/C Delete, Gasket matched heads and intake manifolds, 180 hypertech stat, Cat delete, 2 1/2" header back.

      Comment

      • #4
        no problem its wicked easy to miss a post. i do it all the time.

        so santa better bring me rocker arms for christmas and money to buy a house.
        sigpic
        99 Grand Am GT
        3400/3500 -Solid trans mount--TCE 65mm T-body---85mm LS2 maf---1 1/4' TCE intake spacers with 3400 upper--SLP Catback with flowmaster 80--TOG headers
        Modded 3400 lifters with LT1 springs---Comp Cams 26986 Springs
        1357 cam 227 233 .050 dur         515 515 lift 112 lsa
        15.232@88.85mph on stock 3400---New time to come

        Comment

        • #5
          I second that!
          1998 Chevy M VIN Mali LS with 99 Olds J VIN 3100 Swap

          Sealed power skirted hyperuetectic pistons, LS6 Valve springs, Manley keepers and retainers, Custom short ram, header back, Tuning by Performance Dyno, 3400 TB, MSD Coils and wires, A/C Delete, Gasket matched heads and intake manifolds, 180 hypertech stat, Cat delete, 2 1/2" header back.

          Comment

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