Is this a gov-lock or posi in my 14sf?

[neverendingproject]

I got a different 14sf than the one I was going to get. This one was already pulled and has SOMETHING in the rear, which im sure is going to be better than an open rear end. Is this a posi or a locker? If this is a locker, has anyone had these in the 14sf? Ive heard gov-locks arent too good, but how will this hold up to 33's and mild driving?

 

[u2slow]

How about hosting the pic so everybody can see it?

 

[Seventy4Blazer]

posi or limited slip, but i dont know what kind.
Grant

 

[neverendingproject]

look here. Loaded them up a few minutes ago, dont know if they'll be up, but try. clicky
then click on truck progress

 

[u2slow]

In the pic marked "Diff", that is a factory gov-lock.

I have seen *many* blown up 10-bolt versions, but not a single grenaded 14SF version. They definitely do hold up better.

Should be fine with 33's. I pulled one out of my DD C20 Burb after 280,000km (the last 5,000km on 33's). I never noticed it was there, didn't look any worse for wear, and was still worth $100 to an axle shop. My 2 cents.

 

[neverendingproject]

so which is it? posi or locker?

 

[sweetk30]

gov lock. its a selectable posi unit from the factory. when 1 wheel spins it locks in the fly weight to make it posi unit.

 

[atho]

gov lock. its a selectable posi unit from the factory. when 1 wheel spins it locks in the fly weight to make it posi unit.

Gov-locks are automatic...not selectable. ARB Gov-Lock

 

[big83chevy4x4]

gov loc, had one in my old axle. i never had a problem with it, and i beat it hard. they seem to be fairly strong in the 14bsf.

 

[sweetk30]

Gov-locks are automatic...not selectable. ARB Gov-Lock

never said you can select it. it selects its self . re read my thread.

 

[muddybuddy]

just wondering, has anybody ever tried putting it in a front 10b? i guess it would prolly be pretty bad, but im just curious if anybody has

 

[sweetk30]

thay blow up to easy in the rears . why would you waste time installing one in the front?

 

[muddybuddy]

aint sayin i would, just curious if anybody had tried it, like maybe someone running 33s that wants a "cheap" traction device in the front

 

[b454rat]

Yep, grenade lok. I have one in my 97 but the full floater kind. It IS a selectale locker, but you really don't have any control when it locks or unlocks. Not really anyway. Can't push a button to lock/unlock it. When a tire spins within a couple 100 rpm difference of the other, it locks. When you let off the gas, it unlocks. Great for a d/d or with small tires, but they call it a grenade lock for a reason.

 

[Hogback Fabrication]

It is an AUTOMATIC locking differential. Automatic means that it engages and disengages on its own. Selectable would require input from the driver. It will work out just fine for you. They work very well in the mud and snow and there is no way you are breaking it with 33's (since you have the 14sf).

 

[u2slow]

so which is it? posi or locker?

GM calls it a 'locking differential' even though it uses clutch packs just like their 'posi-traction' differentials of years gone by.

Its probably best to call it a limited-slip with a governor.

 

[Hogback Fabrication]

GM calls it a 'locking differential' even though it uses clutch packs just like their 'posi-traction' differentials of years gone by.

Its probably best to call it a limited-slip with a governor.

It uses clutch packs, but only to damp the locking of the diff. It doesn't use them to transfer torque from one side to the other like a posi. When one wheel gets spinning 100 RPM faster than the other the "Gov-Lock" completely locks both wheels together. I would not call it a posi because it will completely lock both wheels together.

http://automotive.eaton.com/product/traction_stability/lockingdiff.html

 

[Twiz]

GM calls it a 'locking differential' even though it uses clutch packs just like their 'posi-traction' differentials of years gone by.

Its probably best to call it a limited-slip with a governor.

The cluch packs are loaded to the case by the side gears. But there is no pre-load, like a "normal" limited-slip. So, it's a (light) limited slip with a goverend locker.

 

[u2slow]

From that link...

Ramping increases until both axles turn at the same speed (full lock), which prevents further wheel slip..

Full-lock (as they call it) is optimistic. It may not be able to generate the friction to transmit the torque. Wedging a clutch pack is very different from engaging dog-teeth.

A regular limited-slip has the same 'full lock' goal - achieved by the spreading forces of the pinion gears against the side gears - only without the 100rpm/20mph governor.

You can look to a Dana Powr-Lok for a limited-slip than uses ramps without a governor.

But there is no pre-load, like a "normal" limited-slip

Agreed.

 

[4xcrazy]

WOW, i have a Gov-Loc in the 14bff, and it NEVER locks, i have to hold the brakes to get mine to "somewhat" work. it would seem to me, that they are not full locking units, but more less limited slip units.

I personally believe the reason MOST don't grenade in the 14b, is the clutches wear out and won't allow for harsh snapping of components.

you can't put a 14b carrier in the front of a 10b diff,,,won't fit, but i did try to use a 10b Gov-Loc in the front once (just to try it) and really hated it, it would "snap" the front driveline in when the wheels spun.

running a Loc-Rite in the front now, and love it.