Limited Slips

[72k5mike]

Are there any aftermarket limited slip axles that get tighter as wheel spin increases?

My brother has a grand cherokee with the quadra-drive option and "vari-drive" axles. If he ramps his truck, as the wheels spin (the ones with the least weight on them), the limited slip gets tighter and eventually lock up to keep the truck moving. Pretty cool idea.

 

[sweetk30]

from what i have read dana spicer power loc NOT the trac lock .


info copyed from there writeup


This clutch type limited slip is the strongest and most aggressive limited slip differential available from Dana Spicer. It is a clutch type unit using floating cross shafts that ride up on ramps in the case. When power is applied, the shafts ride up the ramps and load the clutches for a positive engagement. A Power-Lok will not lock up 100%, but it is a very durable unit that will hold up fairly well with tall tires. It can be rebuilt, and can be set up smooth or aggressive by changing the clutch design or stacking configuration.

 

[bronc3buster842001]

I like the trac lock thats in my S10 blazer. Course I swapped in the whole rear end from an Isuzu Rodeo. It seems to do alright. Only running 33's on it.

 

[imiceman44]

Are there any aftermarket limited slip axles that get tighter as wheel spin increases?

My brother has a grand cherokee with the quadra-drive option and "vari-drive" axles. If he ramps his truck, as the wheels spin (the ones with the least weight on them), the limited slip gets tighter and eventually lock up to keep the truck moving. Pretty cool idea.

I know in the 60's chevy came up with one of those, but for some reason, doesn't anymore.
The gov loc is the closest you can get now to this, it will start to lock as soon as there is 8 mph difference between the two tires.

 

[1BEATK5]

The reason that the vari-loc works so well is because it has an oil pump that pumps oil against a piston, the piston compresses the clutches tighter and tighter as the spider gears spin.
In order to make a variable clutch in an aftermarket form, the diff housing has to have enough room for all the parts to fit, so that would rule out alot of axles, then the $$ would probably keep most anybody else from buying one. The last grand Cherokee I priced one out for I think it was about $1800.

The only other options I would suggest would be a power lock or a gear type. Trac-loc's are junk. They break in street driven vehicles. The Bellville springs break and fall out.