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new Holley TBI trouble!!

Discussion in 'The Garage' started by 88GLAZER, Apr 22, 2004.

  1. 88GLAZER

    88GLAZER 1/2 ton status

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    put a holly TBI on the truck an hour ago, and the butterfies wont open all the way. the ports on the intake are 1 3/4 and the TBI is 2 1/16. so the butterflies are being stopped by the intake. WTF do I do? TBI spacer?
     
  2. SUBFAN

    SUBFAN 1/2 ton status

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    I would pull the intake and ream them holes out. I would also consider making it an open plenum design, by eliminating the center section, allowing both sides of the motor to feed off a common plenum.
     
  3. Thunder

    Thunder 3/4 ton status

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    Holly sells a thick gasket that adapts it to the 1 11/16" bore. But its better to get the manifold bored out as said above.
     
  4. rickmack1

    rickmack1 Registered Member

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    Get a torque swirl spacer,you get the space to open up the carb and you get better atomization of fuel....more torque!
     

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