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Question about the optispark

This is a discussion on Question about the optispark within the LT1 forums, part of the Vehicle Specific category; I have a optispark with the vents, made after 95, and I don't have a clue were the vent hoses ...

  1. #1

    Question about the optispark

    I have a optispark with the vents, made after 95, and I don't have a clue were the vent hoses go. I assume they go in the intake, but my intake is from a 94 engine. So I don't even know if the vaccuum lines would be there for the vents to hook to. Does anyone know where these two lines go and does anyone know if you even need these vent lines or can I just plug the holes so that crap doesnt get into the distributor?

  2. #2
    Super Moderator 5.0THIS's Avatar
    Join Date
    Oct 2001

    95 Z28

    The vent lines do help, so you should use them... They go to the rubber intake elbow. Just fab something up, wont be hard...

  3. #3
    Junior Member
    Join Date
    Nov 2005

    95 z/28 m6

    Yeah one goes on the drivers side small nipple about mid manifold it has like a little blue check valve on it and the other like 5.0 said goes into the 90 degree intake elbow

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