I'm currently running a 7" 4x4 3.62 LSD rear diff with circa 400bhp.

The car is a Westfield and weighs about 500kg

I'm worried that I will strip the teeth soon when doing hard launches on glued tracks so I'm wondering what the options are?

The car will be over 500bhp for next year with a fair amount of torque too.

Do I use the 7" casing and uprate the LSD and gears or do I use a 7.5" diff casing which is heavier and fit an aftermarket LSD and stronger gears in that?

Are stronger motorsport gearsets avaialable for the 7 or 7.5" diff?

What type of LSD is the best to use for drag / road use?

Quaife
Grippa
ZF

I can only use a 7" or 7.5" diff in my chasis

 

Anyone got the web address for R&D

 

Pm marco polo

 

What make of LSD do people recomend?

 

Anyone?

 

have a welded one for the drag strip

 

Not the best of solutions as it takes at least half a day to take a diff out of my car

 

how long?

what rear suspension do you have? de dion?

 

I had a 7" 4x4 diff in there but unlike the Sierra my diff has to be taken out from the top which means removing the roll cage, boot box, seat belt eyes, rear anti roll bar, drive shafts etc. before you can prise the thing out.

 

That power sounds insane in a half-ton-machine!!!!!

I've got a Quiafe ATB on my 2wd (7.5") that seems bullet proof... don't know much about the others though...