Discussion in 'Chevy Silverado Forum (GMC Sierra)' started by RangerJ, Aug 19, 2010.
1991 350TBI, Need to know spark plug gap.Thanks
Sorry can't help with that. If you call a local auto parts store they should have that info.
Got it, it's .035
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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