Just drove a '05 Dakota quad cab 4x4 4.7 auto. Now this trucks got some guts compared to the v6. Tires would start to spin, but then would grip and goooo.... How do I tellwhat gear ratio and ifit has posi lock rear? I looked in glove bow but nothing there. Would it be in the vin number? Salesman gives a lot of "I thinks this" and "probably that" Dumb butts...
I cleared the computer and in town was averaging around 16mpg, cleared it on freeway and was around 23+ (I know that way is not exact) My trailblazer has never came close these numbers, period.... Will crunch numbers with bank monday.....

 

you have LSD in that truck and gears superdak can answer that for you

 

Probably not feasible for ya...but good info nonetheless.

How To Find Gear Ratio

 

as far as the gear ratio, have the service dept, enter the vin into the computer and find out. if there is not a sticker on the back of the glove box, then they will need to look this up on the build sht. most likely they are the 3.92. better equipment for the heavier quad cab. as for the mileage, around town should be about 17/18 which is good. on the highway being at 23 miles is right on the money. if you leave the cruise on and keep it around 70 mph you should get this all the time. might be a mile lower with the a/c on. if you are lucky, you should be able to pick the truck up for 15000 or less. before you go back, do a kelly blue book search on truck. if not this specific one then any 05 with the options you are looking for. also a carfax if the dealer has not done that

 

Tow package isn't a failsafe way to determine gear ratio. I've got the tow package and 3.55 gearing...

I'd go with what superdak suggested and have the service department plug in the vin and print you a build sheet.

 

DFhas created a monster converting him to a mod...Hes talking back now Eric...haha jk

 

i have a 06 dak slt club cab 4.7 liter v8, don't know if i have posi or not it's 4wd. The problem is i get horrible gas mileage....... 14.6 ugghhhhh Iam second owner got the truck with 5,000 i currently have 11,000. i plan on changing out the sparkplugs and getting a cold air intake and maybe exhaust? Any other ideas on getting better mileage?

 

They could help...

Curing the leadfootalidus may help too

 

haha ya it's hard not to be a leadfoot!!!!! i love driving this truck!!!!!!!! i hope the things i mentioned help out. does anyone know what a good exhaust is? I don't want it to be really loud, a nice rumble would be good!!!!!!!