Gear ratio

[bigchevyz71]

Hey guys I've got the l33 5.3 and was wondering what my gear ratio is, thanks

[intheburbs]

You need to check the codes in your glove box. Engine has nothing to do with it.

 

GT4 3.73 RATIO
GT5 4.10 RATIO
GU4 3.08 RATIO
GU6 3.42 RATIO

[bigchevyz71]

You need to check the codes in your glove box. Engine has nothing to do with it.

 

GT4 3.73 RATIO

GT5 4.10 RATIO

GU4 3.08 RATIO

GU6 3.42 RATIO

I understand engine has nothing to do with it but I didn't know if the l33 came with one or the other in the package

[Supreme Pizza]

You can always climb under there and count the revolutions of the drive shaft VS wheel. Might be able to cross reference the axle numbers - assuming the pumpkin was never gutted. Glove box is a good place to start assuming the stickers are still there. Easiest way is to just call the dealer with your VIN and ask for the factory build sheet - that's what I did for my rig. They emailed it to me on the spot.

 

If you prefer doing things online, just click on this link and then click "Chevrolet Chat". Is connects you to a Chevy rep that will answer all those kinds of questions and can get the build sheet for you as well.

 

Here is the link:

 

https://my.chevrolet.com/contact

[bigchevyz71]

You can always climb under there and count the revolutions of the drive shaft VS wheel. Might be able to cross reference the axle numbers - assuming the pumpkin was never gutted. Glove box is a good place to start assuming the stickers are still there. Easiest way is to just call the dealer with your VIN and ask for the factory build sheet - that's what I did for my rig. They emailed it to me on the spot.

 

If you prefer doing things online, just click on this link and then click "Chevrolet Chat". Is connects you to a Chevy rep that will answer all those kinds of questions and can get the build sheet for you as well.

 

Here is the link:

 

https://my.chevrolet.com/contact

is that free to get from the dealer?

[Supreme Pizza]

Mine was. Easy to get too. I printed out the build sheet, and I keep one copy in the glove box and one copy in my service manual.

[bigchevyz71]

Mine was. Easy to get too. I printed out the build sheet, and I keep one copy in the glove box and one copy in my service manual.

thank you!

Mine was. Easy to get too. I printed out the build sheet, and I keep one copy in the glove box and one copy in my service manual.

didn't know if it being the HO 5.3, if it came with a higher ratio or a lower one?

[intheburbs]

I understand engine has nothing to do with it but I didn't know if the l33 came with one or the other in the package

 

I don't understand why you're making this so difficult. You don't have to go online to chat with a Chevy rep, you don't have to jack up your vehicle, you don't have to go to a dealership. Look at the sticker in your glove box, look for one of the codes I listed above, and that's your rear axle ratio.

 

Here's the sticker from one of my trucks. I see GU6, which means I have 3.42 axles.

 

 

[Supreme Pizza]

You are correct about the tag of course, but in his defense - If someone didn't know that tag was there, then they probably don't know how to decipher it.

[intheburbs]

You are correct about the tag of course, but in his defense - If someone didn't know that tag was there, then they probably don't know how to decipher it.

 

I explained it in the first response in this thread.

[Supreme Pizza]

AH. You are correct, I missed that part.

 

Another option would be to remove the rear axle, disassemble the differential, and send the gears back to the factory for analysis.

[bgbdwlf2500]

I don't think packages that are totally the same exist anymore, any engine could have any axle ratio. unfortunately mine has the GU4