what do you mean by full shave?

14blt axles have massive differential. a common mod is to shave (cut) a few inches off the bottom of the diff and weld in a steel plate. The diff cover has to modified and the ring gear needs to be machined (O.D) as well.

This allows for greater clearance under the diff.

Good info here. I went with the 4.56s because Ive seen other say about the 4.88s could be a bit rough on the D30

It was covered in Xtreme 4x4 last week.

saw it, good info too. I wish it would have went into more detail regarding how freakin heavy they are....GEEBUSSS!!!!

Last gear install I did I had the owner leave the wheels on it so we could let it roll off his trailer.

Yeah 14 bolts are crazy heavy. I know it was hard to move my 60 by myself. I couldn't imagine a 14

I'm on 4.88's now and 35's. We will see how they hold up. I was shocked when I opened the box and saw the size if the pinion. It is a little scary looking.
If it breaks it will be my excuse for a 44 or 60. But man it crawls awesome

I mean 4.56s will still crawl decently right>

Yes check out my pics on here. I ran 35s with 4:56s last year. I had no problems, plenty of power.

3.55 vs 4.88 dana 30

That is crazy. I knew there was a big difference but wow.