Quote:
Originally posted by 99SilveradoSpeed@Jan 31 2005, 02:49 PM
hey guys,
i have a 99 silverado NBS with the 5.3/auto 3.73 rear gears..
i am soon to be running 20x9 wheels with 305/50R20 nitto terra grapplers...over the summer i had 20x9.5 wheels with 325/50R20 toyo proxes...i noticed the obvious better handling but poor brake performance and it seemed like my truck was a little slower but not too noticeable...
I wanted to know if i were to switch to 4.10 gears or so would that help my cause..
i plan on doing gears if necessary/ cam swap/ nelson tune/ and corsa exhaust in the near future...
also i was wondering i have a power dropoff in the low end and it doesnt seem like anything kicks in until @ 2500 RPM..its like a dead spot especially when im in overdrive on the highway i push the pedal a small amount and it just seems like nothing is there until i p[ress it hard to downshift the tranny...
any thoughts would be greatly appreciated... :thumb:
You're running over a 32" tire now. Dependant on your truck it came with from a 245/75 to a 265/75 stock... ~30.5 to ~31.5. Both on 3.73:1 gears sucks. I'd do a min of a 4.10:1. A 4.56:1 would put you at ~2350rpm @ 70mph with the 32" tires, not too bad. A 4.10:1 will get you to only 2100rpm @ 70mph.