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Discussion Starter · #1 ·
What would happen if you didn't gap your plugs out of the box before putting them into the car? Is there a significant loss of power? Will it harm your engine? Also what are the advantages/disadvantages of advancing the timing on a 5.0 and should the spark plug gap be changed should you choose to do so?
 

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you should gap them to about .054....if you didnt it would afect the spark. i run my timing at 14-15 degrees it makes the car snapyer....added timeing is free horse power.
 
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