eatapeach

First off....still new here. only posted in the tuning forum until this one.

I have a 07 new body style crew cab with a 5.3. It is stock except for a Black Bear Tune and 22" wheels. It is still a dog from a stand still until 2500ish rpms and then it will move. What would you do to wake it up? My RPO codes are GT4 G80 so I have 3.73 Posi correct?

I am assuming gears but dont want to kill my mileage as I drive 30 miles highway to and from work 5 days a week. Would 4.10s do the trick?

Thanks for your help.

JakeBrakeIH

iTrader: (22)

Gears would help no doubt, but also a different torque converter will help as well. I put a 3200 circle d converter in my truck and it made a huge difference. I really dont have the money to re-gear the front and rear so Ill just live with the 3.42s.

If I bought another truck like mine again, the very 1st mods would be a converter(and a tune of course )

.James.

iTrader: (17)

^there you go, i was going to say a converter, long tubes and such, i believe stangkilr just put a 3600 converter and lts on his 6.2

eatapeach

Thanks for the help.

I actually have Pacesetters, tru cool tranny cooler, and a Volant CAI on the way. Still need to decide on a Cat Back setup though.

What do you think would be the optimum Circle-D and gears would be?

budhayes3

iTrader: (19)

The converter choice depends on your plans...since you DD 30 miles on the highway each day, you'll want to find a nice balance between the converter, cam, and gears. I'd say that a converter in the 3000-3200 range would be nice, even with the stock cam. You won't want to go too crazy with the gears since you spend so much time on the highway. How tall are the tires? That will kill you off the line too...when I had 33" inch tall tires, 3.73's, and the factory converter, I couldn't do any better than a 2.5 60' time. If you could ditch the 22's and go to a shorter combo, that will definitely help also. If you love your tire/wheel combo, you'll want to go steeper on the gear to help compensate.

Let's say that you have or get a 31" tall tire, then I'd probably go with the 3200 converter that I mentioned above, 4.10 to 4.30 gears (I want 4.10's to go with my 31" tall wheel/tire combo), and maybe a mild Comp 212/218, or Crane 210/218, or a 214/220 style cam, so that when the converter flashes up, there's some meat in the powerband to get you moving.

eatapeach

I dont really want to get rid of the wheels....they look so damn good on the truck.

I measured them a while ago and from what I remember they are 31.5" tall. I will look into the 3200 circle D.

How can I figure out what RPM I would be spinning with 4.10s vs the 3.73s that I have.

Thanks again for the help.

budhayes3

iTrader: (19)

I'm sure that there's a calculator if you go on google, or you could ask around here. It's not a big gear change, so it will only be a couple hundred more RPM than what you're turning now. I feel that for your goals, with a 31.5" tall tire, a 4.10 gear will be a perfect fit

Daryn

iTrader: (19)

150 shot of nitrous should do the trick.

budhayes3

iTrader: (19)

That's cheatin!

eatapeach

one big thing I forgot to mention....I will still need to use the truck to tow a boat or jet skis. So will that stall you mentioned still work?