justin123
September 4th, 2009, 07:11 PM
i got a 2001 lb7 3500 2wd with the ZF-6 in it. when i get up to about 2300 its starts makin this sound and above 2500 its starts getting LOUD like the engines about to slap blow apart... makes the same sound with the clutch in and its been doing it for years now but its bothering me now.. all stock. thanks