73-87chevytrucks.com

73-87 Chevy _ GMC Trucks => Engine/Drivetrain => Topic started by: BIG CHEVY on March 30, 2010, 08:18:34 pm

Title: limited slip diff
Post by: BIG CHEVY on March 30, 2010, 08:18:34 pm

i got a 79 k-10 350/350/203..........    i need to fix my diff covers that leak.

vile says i need lim slip additive if it is limited slip.

how do u tell if its lim slip?     whats easiest and whats guaranteed?

Title: Re: limited slip diff
Post by: jaredts on March 31, 2010, 05:33:01 am

Floor it on your street and see if it leaves two black stripes ;D  Take the diff cover off and compare what's inside to pics on this site.  Limited slip has a bunch of extra "stuff" inside.

Title: Re: limited slip diff
Post by: VileZambonie on March 31, 2010, 05:41:27 am

When you remove the carrier an open differential will just have two differential side gears and two pinion bevel gears or as most people call them spider gears. The spider gears are on a pinion shaft retained in the carrier by a pin bolt.

If it is a limited slip carrier it will have an S shaped spring around the differential pinion shaft and a multiple disk clutch pack. If it had a cone type lsd you would see coil springs and a set of plates. If it's a gov-loc you'll see a spring and lock mechanism etc... Just post a couple pix when you pull the cover and we'll tell you what you have.

read this http://auto.howstuffworks.com/differential.htm