jwAMP

Howdy. I have a 2012 Silverado ccsb 2wd. It is wheelchair conversion, so is very heavy. I purchased a duplicate of the set up that Mike from New Era Performance installed on his*2012*Sierra. This is Whipple currently pulleyed at 10psi, LS7*head gaskets, lifters, IDE 725 injectors,ARP*head bolts, complete DOD delete along with NEP custom blower cam, Nick Williams 102mm tb, NEP nnbs truck*intake,ARE*17/8 long tube stainless headers and catless y pipe, Alky dual nozzle meth kit and 2 gallon tank. All of this is installed on a Gen 4 4.8 currently running through the stock exhaust sans cats. I removed the factory 5.3 as a spare. Due to the lowered floor for the wheelchair conversion the truck has a 3*inch body lift, this forces you to embrace the*4x4 style. Currently it has an additional 3 inches of lift with Bilstein*shocks*and*Hellwig rear sway bar. I have 20inch wheels with Toyo 12.5x35-20 Open country*tires. Currently with ongoing tuning from NEP it hits 0-60 in 5.1 sec and 100 mph in 13 flat. Not too bad for flat footing a nearly 7000 lb truck. In the next couple of weeks I will be adding a*DSS drive shaft,*driveshaft*hoop, 3.5"*Duramax*exhaust with*Magnaflow muffler and swapping to my 14psi pulley. Finally here is my question. Currently it has a G80 and 3.42 gears mated to the*6l80e. Even with the amount of power I am currently putting down, it is kind of a dog off the line. I believe it is the tires and gears along with the weight. I am considering swapping in a*Trutrac*and lower gears. My research suggests 4.11 up to 4.56 gears with this size*tire. Due to the amount of power I am putting down, what should I go with? Thanks for bearing with me.

Choda

iTrader: (1)

I'd say wait for the additional power you are planning then see if you want more power outta the hole. I think the added tq from your next mods are going to make a huge improvement from light to light fun.

I'd also think a good torque converter would be a good idea before gears.

01WS6/tamu

iTrader: (36)

4:56's turn those heavy *** 20's and big tires. The stock 3:42's are probably closer to 2:56's with the current wheel and tire combo.

Wolftrk99

iTrader: (5)

^^^^ what he said!!! (read, i'm with him!!)