72 K10 I want posi - The 1947 - Present Chevrolet & GMC Truck Message Board Network

vanhalen · 11-10-2013, 03:43 PM

I have the factory 12 bolt 3.07 rear axle. What would be me best bet for getting a posi track rearend? Originally I thought I would swap it for a 14 bolt but I really don't want to change my front ratio. Are there 3.07 posi track rear ends floating around out there? Any advice is appreciated as I know little about the subject.

k5xjfiles · 11-12-2013, 02:35 PM

Id look into a lunch box locker like a LockRite or Aussie. Super simple to install, no taking out the R&P, and very inexpensive. Simply replace the spiders with it and you will be locked when going straight.

Mike C · 11-12-2013, 09:05 PM

There are 3.07 posi rears out there. My Jimmy came that way and a junkyard rear that we got in the 80's was that way as well. You can buy an Eaton posi for the truck diff as well as an Auburn.

Read more about the lunch-box style lockers online. Some people love them on the street, some hate them. Not recommended for short wheelbase vehicles. With that said...

I'm getting ready to put Powertrax No-Slips in my '79 CJ-5 with 4.57 gears. The No-Slip is supposed to be one of the most street friendly of the drop in lockers, but it is by far the most expensive. Both my '44 MB and my '52 M38A1 have Lock-Rights in them and I am a big fan. But they see NO street duty. My '79 will have an occasional blast on the road, but not too far. CJ-5's and highway driving don't mix well nor do the 4.57's...

11-10-2013, 03:43 PM	#1
vanhalen Registered User Join Date: Aug 2010 Location: Scottsburg, IN Posts: 11	72 K10 I want posi I have the factory 12 bolt 3.07 rear axle. What would be me best bet for getting a posi track rearend? Originally I thought I would swap it for a 14 bolt but I really don't want to change my front ratio. Are there 3.07 posi track rear ends floating around out there? Any advice is appreciated as I know little about the subject.

11-12-2013, 02:35 PM	#2
k5xjfiles Junior Member Join Date: Apr 2005 Location: Stokesdale, NC Posts: 100	Re: 72 K10 I want posi Id look into a lunch box locker like a LockRite or Aussie. Super simple to install, no taking out the R&P, and very inexpensive. Simply replace the spiders with it and you will be locked when going straight. __________________ 72 K5/10/20 Hybrid 350, 465/205 44/14 bolt 35s, Detroit locker 89 XJ Pioneer, 4.5" 32s. 98 ZJ DD. Parting..87-01 Cherokees I bore throttle bodies-PM me for details!

11-12-2013, 09:05 PM	#3
Mike C Registered User Join Date: Dec 1999 Location: Austin, TX, USA Posts: 7,730	Re: 72 K10 I want posi There are 3.07 posi rears out there. My Jimmy came that way and a junkyard rear that we got in the 80's was that way as well. You can buy an Eaton posi for the truck diff as well as an Auburn. Read more about the lunch-box style lockers online. Some people love them on the street, some hate them. Not recommended for short wheelbase vehicles. With that said... I'm getting ready to put Powertrax No-Slips in my '79 CJ-5 with 4.57 gears. The No-Slip is supposed to be one of the most street friendly of the drop in lockers, but it is by far the most expensive. Both my '44 MB and my '52 M38A1 have Lock-Rights in them and I am a big fan. But they see NO street duty. My '79 will have an occasional blast on the road, but not too far. CJ-5's and highway driving don't mix well nor do the 4.57's... __________________ 44 Willys MB 52 M38A1 64 Corvette Coupe 68 Camaro 'vert LT1 & TH700 69 Z/28 355 12.6's @110 69 Chevy Short Step 4 1/2"/7" drop 72 Jimmy 4WD 4spd 4" & 35's 02 GMC 2500HD 4x4 Duramax



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