05 Chevy 2500hd

dustylong54

New Member
Jul 2, 2014
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Hey I have a chevy 2500hd with the 6.0 and it has a 6" lift with 37" and it sucks at towing it has 4.10 in it I got told either put in 4.88 or 5.15 What do u think. anyone do this with there truck?