Changing the rear axle...again
 

When I first got my C10 (I6, 4spd, 12 bolt 2:73), I knew I was gonna convert it to LS/4L60E. So I bought an axle from an '86 C10 and was told it was a 3:42. Wrong!! Turned out to be a 3:08. Went ahead and used it anyways. Definitely a good hiway gear, but I still wanted a little more gear. Well, after a long search, found a 3:42 axle from an '86 GMC 1500 4x4 (try finding a 3:42 from a 2X4...good luck with that, especially in New England). Anyways, I pulled the cover, checked the ring and found the numbers 41/12 stamped into it. Yes!! 3:42!! But... while looking at the gears for wear/broken teeth, I found a side gear spider with more craters than the moon. Was thinking, if I gotta fix it anyhow, why not pull the carrier and install a posi unit. Anyone have 1st hand knowledge of the Eaton TrueTrac (#912A556), and is this a decent choice for a street truck/toy? Thanks

Re: Changing the rear axle...again
 

Easy Peasy -
www.car-part.com

Re: Changing the rear axle...again
 

Lee..You sure are right about all the 4x4s in the yards. I found a newish Auburn unit with 3.73's in a 89 Suburban. Some say they are not the best but its fine for a cruiser. It's 30 spline so I had to change the axles too. 88 and up trucks are 30 spline so they were easy to find.
Wow those Eatons are expensive.

Re: Changing the rear axle...again
 

Truetrac is an excellent choice for a street driven truck. You will not be disappointed.

Re: Changing the rear axle...again
 

x2 ;)

Re: Changing the rear axle...again
 

Thanks , Gents. I've ordered a unit from the local speed emporium and should have it next week

Rich, I had looked at the "later" year rears, but knew of the different axle spline count. My intent is to use the axles/brakes from my current rear to convert from six lug to five lug to save on money. I know the 30 spline axles are stronger than the 28, but for what I use the truck for, I don't think I have a problem. I'll let the next "keeper of the keys" worry about it