I currently have a 05 silverado with 3.73's and i am going to switch out the gears what should i get i am definately going possie (forgive my spelling) i have stock wheels and tires (for now, looks come after performance) and just basic bolt ons headers, cai, programmer, exhaust. so any help would be great.

 

depends if your just gonna do alot of racin go with the 4.56's..i wish i would have..i have 4.10 with a 29 in tire and i turn 2200 rpm at 70..so 4.56's would be around 2500-2600 rpm at 70

 

When i still had the automatic i had a set of 4.10s and they felt pretty damn good. Even with 285/50s sittin out back it would spin all the way through first and wouldnt grab till it was a good ways into second. Thats on the street though. I think 4.56s might be too much from a stop especialy with stock tires you would just spin alot. I would go with 4.10s, im goin to 4.56s right now just cause the gearing is a little diferent and when taking off and its alot easier to keep a stick from spinnin than with an automatic.

Jon