Rear End Sizing Help

[jackgraves]

Hey guys I have a 2015 Silverado 5.3 with 3.42 gear. I've done a TSP Stage 3 Cam, heads, stall converter and custom Tune. My question is what size rear end are these trucks it doesn't look like the old 8.5 or 8.625 something. I'm thinking it's the 9.5 or 9.75 PLEASE help if possible. My next mod is a 3.73 or 4.10 gear. Thank you guys

[Armo325]

1 hour ago, jackgraves said:

Hey guys I have a 2015 Silverado 5.3 with 3.42 gear. I've done a TSP Stage 3 Cam, heads, stall converter and custom Tune. My question is what size rear end are these trucks it doesn't look like the old 8.5 or 8.625 something. I'm thinking it's the 9.5 or 9.75 PLEASE help if possible. My next mod is a 3.73 or 4.10 gear. Thank you guys

I haven't done the engine mods you have but I am also going to 4.10 on my 2017 to compensate for the lift and tires.

 

We have a 9.5 rear end and, if you have 4WD, 8.25 front diff.

[jackgraves]

8 minutes ago, Armo325 said:

I haven't done the engine mods you have but I am also going to 4.10 on my 2017 to compensate for the lift and tires.

 

We have a 9.5 rear end and, if you have 4WD, 8.25 front diff.

Thanks man. No I have stock 31 inch tall tires and 20 inch rims. I'm only 2WD I honestly think 3.73 will suit me fine for everyday and highway driving. Thanks so much for the rear end sizing help