Camaro and Firebird Picture by kmcn47 | 3977357 |

see what i mean. they look ashy. and idk what the gap should be. i've heard .040 and .060 for older low comp 5.3s. this is a first gen 99 5.3 i guess i'm gonna throw some ngk tr-55s in it at .060

#4 plug

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kmcn47 July 24, 2015

see what i mean. they look ashy. and idk what the gap should be. i've heard .040 and .060 for older low comp 5.3s. this is a first gen 99 5.3 i guess i'm gonna throw some ngk tr-55s in it at .060 #4 plug

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