Topic: 4cyl Vs. V6 Third

[scyota]

how much stronger is the V6 third compared to the 4cyl third? Is there really a huge difference? and what are some advantages/disadvantages to both?

I currently have 2 4cyl thirds with matching gears and 1 V6 third with a different gear ratio and need to know which ones i should use.

[jimbo74]

i would sell the v6 unit, unless you are running a high power engine or just beat the crap out of your truck..... otherwise, its probably going to be a lot more hassle then its worth

[BigMike]

V6 diffs use larger bearings, larger crush sleave (OD), larger pinion, larger ring gear, larger carrier, larger spider gears, larger pins, etc.

If you have access to a V6 diff, then I would not even hesitate to put it in, especially since you've got a pretty heavy rig.

I have a V6 diff in the back of my '81.

BigMike

[79coyotefrg]

isnt all E-lockers  "V-6"       I gots one to    btw  i put my 4 cyl 4:37's  on it too

[Marlin]

The larger V6 diff is still called a 8 inch which is the same as a 4 cyl.

Since it has larger, thicker pinion bearings, it must use a shorter crush sleeve.
It has longer pinion teeth but the same size ring gear.
The carrier has larger bearings and features 4 spider gears with a cross shaft.

It has 9 external ribs instead of 7 found on the 4 cylinder unit which makes it much more rigid.
Since they both have the same bolt pattern and drive line attachment, it is a direct bolt in.

[blackdiamond]

But...

What are the chances that he will break a 4 cyl 3rd, short of crazy abuse?

[scyota [OP]]

Thanks for all your responses!