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What intake manifold for 91 block LS with OBD2 head.

Discussion in 'HYBRID -> ED-EF / DA' started by luciusad2004, Apr 1, 2011.

  1. luciusad2004

    luciusad2004 Member

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    hey all. I have a 91 LS block but when i bought it, it had an OBD2 head of unknown year. Does anyone know what intake manifold I should be using? My car runs OBD0.

    I ask because i have never seen my intake manifold in any pictures online. It's stamped p-75 but the vacume ports are strange and i suspect they are hooked up wrong. Does it matter what OBD my intake manifold is or are they pretty interchangeable? I figured newer manifolds might have different vacume ports and such for more stringent emissions systems.

    Thanks for any input.
     
  2. Briansol

    Briansol Admins Admin VIP

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    the head casting has basically no obd-specific parts on it. You'll want a b18a obd0 mani to make it easy.
     
  3. luciusad2004

    luciusad2004 Member

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    Ok thanks. : ) Thats what I figured. Then I should probalby get a vacume diagram for a b18a and go fromt here with trying to figure out my vacume issues?
     
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