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Discussion Starter #1
I would like to know to what size I should gap my sparkplugs .
I use autolite 764 . Haynes manual recommends to set the gap at 0.054 for stock . For my ignition system I have the Jacobs pro street energy pack with the ultra coil . They recommend to open up the gap 0.010 to 0.030 larger over stock .

What do you guys think will be best for my engine combo ? This should be for Natural aspirated combo .

'90 Mustang Gt.
Gt40p heads ported & polished , milled 0.030 , cobra intake match ported to head , 1.7 rockers , 65 mm Frpp TB , 24 pound injectors , stock cam , 75 pro m mass air , 1 5/8 shortie headers , 2.5 offroad pipe , 2.5 dynomax catback . Asp pullies , 155L Fpump , Paxton fpr . NX 50 -150 hp kit , Jacobs nitrousmastermind, Autometer fuel & oil gauges , Cyberdyne A/F meter , home made cold air intake with K&N filter , 180 Term.

Thanks for the help .
 
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