1.9 axle ratio???? HELP PLEASE!

[SUBURBIAN]

1.9 x 2 = 3.8

You have a 3.73 gearset.

 

[jerryjoe28]

hmm RPO codes are always nice on stock trucks. and @SUBURBIAN is dead on

 

[motorbreath]

My bad obviously someone with more money than brains paid a machine shop to custom cut them a set of rear end gearing so they could have a 1.9 ratio.....
Anyway since your too intelligent to have read the information i posted fully ill make one final post and i wont be visiting this thread again. If you had a 1.9 your truck would be gutless not decent but gutless. In my info post it was stated if you didnt have a posi rear you would make 2 full rotations rather than 1 rotation which would put yout gearing in the range of a 3.73 which would be common and allow the truck to move decent as you described. Im not sure which rears came stock with the stamp on the ring gear probably most if not all but you should be able to pop the cover off and look for a stamping on the ring gear that will tell you what the gearing is. If this is in reference to the truck in your profile pic im not sure what tire size your running but you probably want to find a 4.10 rear.

Yes its the truck in the profile picture. those are 35's .. If I do 2 tire rotations then that would make sense and the ratio would come out to be something logical (around 4.00) .. I happen to be pretty intelligent btw, The problem is that contradicts your explanation of posi/limited slip/open rear ends as the passenger side rear does not move when I spin the drivers side, thus making it a limited slip correct? Therefore, according to YOUR instruction, I would determine my ratio from ONE tire rotation correct? I do appreciate your efforts to help , but now maybe you understand my confusion? What might be the reason that the wheels don't spin opposite if it IS an open rear end? FYI, I know there are much more knowledgeable than I about this topic out there hence the reason Im up here asking questions. You are probably certainly one, but the info that Im getting does not match up

 

[motorbreath]

After closer measurement, the driveshaft turns almost an even 2x per wheel rotation, making me think that its closer to a 3.90 or 4.11 IF its an OPEN rear end , according to drakon543. My confusion comes via the passenger side not rotating any when I turn the drivers side wheel. As drakon543 stated, simple logic would tell me that it HAS to be an open rear end (if his info is correct) as using a 1.9 ratio would just be dumb...... So now the question is: "Why don't my rear tires turn opposite if it IS an open rear"? Atleast I feel better that I likely have a correct gear ratio for the vehicle anyway!

 

[SUBURBIAN]

Man, does the sticker on your glove box door have the code GT4 on it? What are the codes beginning with the letter G? Post them here.

 

[bowtiefreak]

http://www.tahoeyukonforum.com/threads/gear-codes.23591/

 

[motorbreath]

My codes are GT4= 3.73 and G80.... assuming that the axle is the one that came from the factory.

 

[motorbreath]

Thanks for everyone help! Please forgive my confusuion

 

[SUBURBIAN]

Well there you have it. Happy motoring.