I have an 04 Screw 4.6 (2wd)

I have done a search and cant not find the exact answer for this question.

I know I have an 8.8 Rear End, So I went to order the 4.10's and they asked the spline count. How do I determine that?

Using the search feature all I could come up with was the 4X4 trucks have 8.8's on the front with 28 spline count.

Just hoping someone can help me out soon, so I can get this thing order'd

Thanks
Tom

 

I was advised that all the trucks had 31 spline axles.

 

http://store.summitracing.com/partde...5&autoview=sku

 

Gear swap has nothing to do with splines... I'm not sure why they are asking... Unless you are changing out your diff to a LS unit.

 

31 spline is the answer you are looking for. I just finished doing the same mod and I finally called the dealer and obtained the correct response. You will like the upgrade.