Gears And Tuners

jhale2004 · December 31, 2007

Im a noob... hi!

I had the dealer give me a GM vehicle build report from my VIN. It says I have the 3.23 ratio and it sucks! I am wanting to go 3.73 or maybe 4.10 but I dont tow much and I want some good mileage so I was figuring I could probably gain a little mileage by going to 3.73 as well as some set of the pants gains . How do I need to correct the speedo afterwards though? I would like to get a Predator but I am leary of it because I had one on my 02 Mustang GT auto and it raised trans line pressure and eventually tore it to pieces. I dont want to do anyting to sacrifice reliability of the truck at all! 05 Silverado RCSB 5.3 running 275/55/20 and no mods except the rims and exhaust and an Escalade cluster. So I guess my question is... will the Predator hurt anything at all just by installing the predator tune and correcting my speedo or what is the best route? Thanks

EDIT:

I was also wanting a shift kit... nothing harsh, just something basic to firm it up just a tad... whats common in these trucks, or will the diablo take care of that?

jhale2004 · January 2, 2008

bump?

BigJayDogg3 · January 2, 2008

What kind of driving do you do? Is it mostly highway or city?

As for the tuning try Wait 4 Me Performance.

jhale2004 · January 2, 2008

mainly city but occasional highway

BigJayDogg3 · January 2, 2008

Then yeah. You would want to go with 3.73s or 4.10s. And since your sig pic shows you pulling a trailer, and you obviously want to lay down "twin black streeks of rubber. . .every day," I say go with the 4.10s.

svensk · January 2, 2008

Go 4.10's or go home. Especially if you tow with those huge rims and tires.

Don't even think of a hand held tuner they're worthless for the same money get a mail order pcm from nelson, wait4me, wheatley, etc. They can correct your speedo and ABS for the new gear size.

jhale2004 · January 2, 2008

Then yeah. You would want to go with 3.73s or 4.10s. And since your sig pic shows you pulling a trailer, and you obviously want to lay down "twin black streeks of rubber. . .every day," I say go with the 4.10s.

I dont give it hell lol... I just thought that was cool lol.... I hate to go 4.10 and then wish I had went 3.73... I put 4.10 in my 02 gt and they were too low for interstate.

svensk · January 2, 2008

Then yeah. You would want to go with 3.73s or 4.10s. And since your sig pic shows you pulling a trailer, and you obviously want to lay down "twin black streeks of rubber. . .every day," I say go with the 4.10s.

I hate to go 4.10 and then wish I had went 3.73... I put 4.10 in my 02 gt and they were too low for interstate.

That's simply crap. The difference between the two is a few hundred rpms in overdrive. Especially with those big rims and tires you want 4.10's so you can maintain 2000rpm at 70mph. I have 3.73's with 265 tires and I wish I had 4.10's for the little extra power. You will put less stress on your tranny as well the quicker you move to a lower gear like a 4.10.