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5.0L (1979-1995) MustangTechnical discussions on 5.0 Liter Mustangs within. This does not include the 5.0 from the 2011 Mustang GT. That information is in the 2005-1011 section.
So i bought NGK plugs for my fox, and the threads were too short, it wasnt cathcing them in the block. So I figured, hmm maybe I got the wrong ones, so i bought motorcraft plugs, still didnt fit, so i took the old plugs to the store and got the same bosch plugs, but the guy said that these werent for a 5.0...so whats the deal.....?
the thing is..i bought the car like this, the last owner said the motor was bored out to a 306 but i didnt think that would effect spark plug size, i'm not sure what the part number was, i dont remember, but i know they were bosch platinums