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  • 3x00 exhaust manifolds

    does anyone know if 3x00 exhaust manifolds will bolt up to my gen 2 3.1 heads
    I Like V660s
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    ~Jayme~

  • #2
    Re: 3x00 exhaust manifolds

    Originally posted by rave
    does anyone know if 3x00 exhaust manifolds will bolt up to my gen 2 3.1 heads
    No, they will not. The exhaust ports are shaped differently.

    Shawn
    90 Grand Prix STE 3.1 Intercooled Turbo-3100 Hybrid
    K&N, Magnaflows, No Cat, Chip, FFP Pulley, H260 Cam, No EGR.
    99 Grand Prix GT
    K&N|No Cat/ubend/res|160 tstat|shift kit|UD ALT & WP Pulleys|XP Cam|Stage 2 I/C|Pacesetters|MPS|2.9"|Custom PCM
    12.665 @ 110.44 w/2.018 60', STREET TIRES, PUMP GAS!

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    • #3
      Yes they will. they will flow better as well.

      you can use the GEN3 on the GEN2's the "D" shape port is ok to use on the round Gen2 heads. as the flat part sits lower than the round port so its not a missmatch. they will bolt up fine.
      they dont work the ohter way around though.

      get the manifolds with the "Header" style rear instead of the log type.
      Colin
      92 Sunbird GT, 3200 Hybrid 13.99@ 95.22 (2004)
      90 Eagle Talon TSi AWD 10.54 @ 129mph.

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