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Spark Plug Gap

Discussion in 'Chevy Silverado Forum (GMC Sierra)' started by RangerJ, Aug 19, 2010.

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  1. RangerJ

    RangerJ Member

    1991 350TBI, Need to know spark plug gap.Thanks
  2. silveradotrailblazer

    silveradotrailblazer New Member 1000 Posts 100 Posts

    Sorry can't help with that. If you call a local auto parts store they should have that info.
  3. RangerJ

    RangerJ Member

    Got it, it's .035
  4. murdog94

    murdog94 New Member 1000 Posts 100 Posts

    Me personally with the TBI run about .040, The coil is heavy duty enough to handle the extra zap, and it creates a little more spark. But really anything over .040 is a waste...

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