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'90 350 TBI Engine Question

Discussion in 'The Garage' started by Bubba Ray Boudreaux, Sep 27, 2005.

  1. Bubba Ray Boudreaux

    Bubba Ray Boudreaux 1 ton status

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    What type of bolts were typically used for the EGR valve?????????????
     
  2. randy88k5

    randy88k5 1/2 ton status

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    Im not positive, been a while since mine was off, but a 12pt 9/16" cap rings a bell.
     
  3. 84zz4ss

    84zz4ss 1/2 ton status Premium Member

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    If it is stock the manifold should have studs with a 13mm or 1/2 nut holding the valve on.
     
  4. southernspeed

    southernspeed 1/2 ton status GMOTM Winner

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    Yeah I'm pretty sure mine was 13mm or 1/2 nuts on studs.
     
  5. HarryH3

    HarryH3 1 ton status Author

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    Same here. Two studs that screw in using a "reverse Torx" socket. The tip of the stud is shaped like a Torx driver and takes a socket that fits over it. They don't have to go in super tight. Just snug 'em down and then slide the EGR valve over the studs and install the nuts.
     
  6. 89GMCSuburban

    89GMCSuburban 1/2 ton status

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    I have one stud and one nut....guess I'm a freak. :crazy:
     

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