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removing smog and a/c questions

This is a discussion on removing smog and a/c questions within the External Engine forums, part of the LSx Technical Help Section category; just wondering the best and easy way to take smog and a/c off my 99 Z. and make it easier ...

  1. #1
    Junior Member
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    white
    1999

    removing smog and a/c questions

    just wondering the best and easy way to take smog and a/c off my 99 Z. and make it easier to change plugs. new to the LS1 world . kinda..; first ls1 car

  2. #2
    Senior Member SteveCZ28's Avatar
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    Red
    99 Chevrolet Camaro Z-28

    removing smog which is called the air and egr systems is pretty straight forward and easy...ebay sells the block off plates when you remove them for about 15 bucks...just do a search for "ls1 air egr plates" 2 10 mm bolts on the passenger side manifold takes off the egr, it has 2 15mm bolts attached to the head, and 1 10mm on the intake tube....then for the air systems its 2 10mm bolts on the passenger side manifold and 2 10mm bolts on the drivers side manifold. and pull those tubes straight out of the car.

    your air hoses will look like this, they wrap from the manifolds around the back of the engine joining each other, then a t fitting runs a hose down along near the drivers side fender underneath the car to an air pump



  3. #3
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    white
    1999

    Quote Originally Posted by SteveCZ28 View Post
    removing smog which is called the air and egr systems is pretty straight forward and easy...ebay sells the block off plates when you remove them for about 15 bucks...just do a search for "ls1 air egr plates" 2 10 mm bolts on the passenger side manifold takes off the egr, it has 2 15mm bolts attached to the head, and 1 10mm on the intake tube....then for the air systems its 2 10mm bolts on the passenger side manifold and 2 10mm bolts on the drivers side manifold. and pull those tubes straight out of the car.

    your air hoses will look like this, they wrap from the manifolds around the back of the engine joining each other, then a t fitting runs a hose down along near the drivers side fender underneath the car to an air pump

    Click for full size
    Click for full size
    thanks man. ima do it this weekend

  4. #4
    Senior Member SteveCZ28's Avatar
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    Red
    99 Chevrolet Camaro Z-28

    youll need a plug for the intake too, other wise youll just have a big hole sucking air...you can get the plug from gm part number 12558346 , or get a rubber expanding plug 1 3/8th inch diamter

  5. #5
    Member Coydawg6's Avatar
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    Red
    2002 Z28 Camaro

    Just removed my ac lastnight not to bad I thought.. But I didn't mess with where it actually goes it the car

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