Well guys I am curious as to what i should do next, the Truck is a ccsb 5.3 4l60e and has pacesetter long tube headers and off road Y, flowmaster super 44 muffler, K&N cold air intake, port and polished throttle body, edge evolution programer, stock 3.42 posi rear, and 24" rims with 295/35/24 tires.Right now according to my edge evolution, it runs 15.46 @ 94.4 1/4 with a 2.78 60'. I'm shooting for high 13s low 14's on motor.

I have a low mileage used set of 4.10 gears waiting to go in but I am a little hesitant about installing them before a 3200 stall because I may not mind the 3.42's with the stall but the 4.10 may be a little too much for daily driving. I am getting a tune either way but that will be after the stall/gears so I do not have to retune it.

07 sierrra crew cab 0-115 - YouTube

Here it is now, not bad to be untuned but has no bottom end.

 

You will like the stall better with the 4.10's. More gear tightens the converter up at part throttle. My 4.8 cc ran 8.9 1/8 which should have been about a 13.9, 14.0 1/4 with bolt ons, stall and 4.10s. you can get it there!

 

Get a Circle D 258mm 3400. You'll love it. You'll want the 4.10s though. As soon as I get some free time where the truck can be down, mines getting 4.10 front and rear.

 

Well I'm probably gonna put my gears in next weekend and go from there. I can't wait to get the 3200 stall in it!

 

those gears will help with those big wheels!!