Need Help rear end !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

[Monster]

I have a 86 K5 Blazer. my 10 bolt rearend blew up which had 4.56 gears in it to turn my 35 inch tires.

I have a 700-R4 tranny. My question is what rear end can I put in there that is stronger than a ten bolt. What type of truck should i get the rear end from and what year also what needs to be changed. /forums/images/graemlins/angryfire.gif

 

[o2bjimmy]

chech out the post about boring a d44 to make it a dana 60, custom 10 and 12 bolts are also being duscussed in this thread /forums/images/graemlins/thumb.gif /forums/images/graemlins/thumb.gif /forums/images/graemlins/rotfl.gif

 

[Muddytazz]

14FF from any 3/4ton rig....but the only way your going to find a 14FF WITH 4.56's is a military rig, unless you get lucky and someone is selling one with the gears you want in it already. Only other thing you'll need is a conversion u-joint /forums/images/graemlins/thumb.gif

 

[big pappa b]

PM "WAYNE" He is on a trail run this weekend but he has 14BFF rears with 4:56's for sale. I'm getting one from him this month along with mt D60. He lives in PA so it's sort of close to ya

Bryan

 

[rjfguitar]

[ QUOTE ]
14FF from any 3/4ton rig....but the only way your going to find a 14FF WITH 4.56's is a military rig,

[/ QUOTE ]There are plenty of 3/4 & 1 tons that came with 4.56's that are civilian vehicles and aren't real hard to find. I even found a 14BFF with 5.13's that were factory.

85K5 3/4ton,14boltFF,10bolt,9"lift,35"boggers,16.5x14 welds,406SBC/700r4 /forums/images/graemlins/k5.gif /forums/images/graemlins/angryfire.gif

 

[Eric M.]

Monster,

The 14 Bolt Full Floater from a 3/4 ton will bolt right in, assuming your rig is of the 73 to 91 vintage. The 1 ton version will need to have the spring perches and shock mounts relocated. Stick with a 3/4 ton. Hopefully you'll find one with 4.56. If not, it might be a good time for that posi along with the new gears!

Expect to pay $100 to $200 for a complete 14 Bolt FF w/ open dif.

Good Luck,

Eric M.

 

[Mastiff]

[ QUOTE ]
Expect to pay $100 to $200 for a complete 14 Bolt FF w/ open dif.

[/ QUOTE ]

Wow, that's cheap. It'd cost more for me to change the gears in my 12-bolt. Is this a functioning unit, or a rusty heap from a junkyard?

 

[rjfguitar]

At the least, $200 should get you a 14FF in decent(running) shape with a posi and 4.10's or lower. I paid $400 for a front 3/4ton 10b in very good condition, good R&P,bearings,seals and a 14bFF W/posi,4.10's, and 70% brakes left. 14BFF's that have high ratios like 3.73 and higher are worth about as much change that is in your pocket in an used condition. /forums/images/graemlins/tongue.gif

85k5,3/4ton,14boltFF,10bolt,9"lift,35"boggers,16.5x14welds, big horse 406SBC/700R4 /forums/images/graemlins/k5.gif /forums/images/graemlins/angryfire.gif

 

[Rolled]

If you are going to replace a rear 10 bolt (6 lug) with the above recommended 8 lugs, you will also have to get 8 lug wheels /forums/images/graemlins/frown.gif

A 12 bolt is stronger than the 10. Easy to find and cheap as well.

[I could be wrong]
You can get a 14sf from a 70's/80's rig, then go get some 6 lug axles out of a late 80's/90's 14sf and swap them. Maybe the backing plates too. This way you could stay 6 lug and run a much stronger rear.
[/I could be wrong]


Good luck

 

[rjfguitar]

[ QUOTE ]



You can get a 14sf from a 70's/80's rig, then go get some 6 lug axles out of a late 80's/90's 14sf and swap them. Maybe the backing plates too. This way you could stay 6 lug and run a much stronger rear.

[/ QUOTE ]
I would agree, this would be a good upgrade for a vehicle on the border of being past the limits of the rearend. If you find an 80's-90's 14sf use that don't look for an older one. I was told by a mechanic that a 14sf born with 8 lug axles cant be converted to 6 lug but I have a hard time believing that /forums/images/graemlins/rolleyes.gif Still the 14FF has it's advantages over the semi floater and should strongly be weighed in. /forums/images/graemlins/thinking.gif

85k5,3/4ton,14boltFF,10bolt,9"lift,35"boggers,16.5x14welds, big horse 406SBC/700R4 /forums/images/graemlins/k5.gif /forums/images/graemlins/angryfire.gif