stock diffs are good for mom going to the store.

if you beat them in anyway they will break.. maybe not the first time but soon

 

D@nny is the only one that has posted any numbers so far.

so as it stands now it looks like the stock diff breaks at 550

anyone got anything lower.

platinum.

 

i did make 650 on the stock diff adn it didnt break...it did break axles tho

the guy that broke his at the track was on 25 inch slicks and 700 hp axles with upgraded hubs

 

im pretty sure i posted some numbers and a ton of info stating that you really cant rate the tq/hp reading is a wounderful thing. at any rate its basically boils down to the fact that the stock diff will break under stock power loads. if you have the abilty to make 500 600 hp why in the hell would you want to use the stock diff... you would be doing cool one wheel peels everytime you touched the gas, and thats what breaks them its not a number that can be measured...
it depends on the traction and how you drive

 

this stock diff broke, when one wheel (lets say the right wheel) was spinning
when the diff decides to transfer power from the right wheel to the left, the gears in the middle of the diff(spider gears) stop spinning suddenly and under heavy load. when this happens, you break stuff... not saying it will happen every time but, keep at it and you will find this inside your tranny

and this..


hense you can make stock numbers and break stuff, you can make big numbers and brak stuff.. you can't rate actual figures.

 

LSDs help to prevent this, most have a helical clutch of some kind inside the diff where the spider gears are.. under heavy load the lsd apply power to both wheels not just the one with the path of least resistance. giving you better acceleration.
better turn in all that shiz nit.

If for whatever reason you can get one wheel to spin when the power does try to transfer to the other wheel, instead of locking that helical clutch slipps in there and prevents major failure.. and because of this they can handle much heavier loads than stock, but then again it depends on the traction driver and all sorts of other factors, this prevents them from coming up with accurate numbers

 

I made 300hp/250tq and have about 50 passes on my stock diff. with a phantom grip. No drivetrain problems all season. Axles were by Raxles. Tires were BFGoodrich Drag T/A 225/50/R15. Preloading seemed to work great for me. On a side note, the phantom grip does not always spin both wheels in the burnout box. But it really does help with torque steer...that and a good even caster adjustment.

 

my car makes passes all day on slicks ...put the Bfgs on and broke an axle first pass...they make the car wheel hop..

That counter shaft is owned

 

I also should have specified...OEM LSD's.....not open diffs. I know the Quaife is obviously a better buy. But say for a 400-500whp street car that doesn't get much track time, is it worth the extra $500 or so to upgrade to a quaife over an OEM LSD?

 

yes....quaife is one of the best mods you can do ...period

the stock lsds sometimes stop spinning both wheels at high power leves and if it breaks your transmission may break with it

 

Sounds good. Thanks for all your insight.