Differential - 5.0 vs 3.8 Compatibility

[e.han]

Hello gents,

I drive a 2015 3.8L which comes with an open differential and understand the 5.0L comes with a limited slip differential.

Has anyone here had any success installing the LSD from a 5.0L into a 3.8L? Or knows if they are compatible?

Do I have to swap the entire carrier assembly (53000-3C321) or can I just swap out the differential case (53020-3C300)?

 

[Nameneeded]

Have you tried looking to see if Quaife makes an LSD for it?

After a quick look I believe that the 3.8l Genei Coupe shares the same diff as the 3.8 sedan. So if that is accurate (don't trust me. I don't ;P ) then Quaife makes this one QDH19B that should fit?

tuningdevelopments.uk/product_info.php?cPath=502_520_592_0_1141_1154_1208&products_id=6841&osCsid=1m2tqumvcvmt5aknlasv6dn317

IF it fits I'd go quaife all day over any oem parts.

 

[5.0KDM]

No LSD in the 5.0 buddy. It's a one wheel wonder.

 

[arcman]

Installing a limited slip diff in your car would be a complete waste of money. Maybe, just maybe you might notice a difference if you were doing power braking burnouts. (Will it even spin the tires? I've never tried.) The other 99.99% of the time, you wouldn't notice a thing.

It's a luxury sedan. Not a race car.

 

[Nameneeded]

Installing a limited slip diff in your car would be a complete waste of money. Maybe, just maybe you might notice a difference if you were doing power braking burnouts. (Will it even spin the tires? I've never tried.) The other 99.99% of the time, you wouldn't notice a thing.

It's a luxury sedan. Not a race car.

Gonna disagree with you buddy.

An lsd can change how a car handles slick roads, corners, uneven surfaces even when just driving miss daisy around town.

I've only added them for performance myself but I still noticed the changes in everyday driving characteristics.

Also.... Willing to bet many people here are gonna disagree that a Gennie isn't "just a luxury sedan."

 

[carguy75]

Hello gents,

I drive a 2015 3.8L which comes with an open differential and understand the 5.0L comes with a limited slip differential.

Has anyone here had any success installing the LSD from a 5.0L into a 3.8L? Or knows if they are compatible?

Do I have to swap the entire carrier assembly (53000-3C321) or can I just swap out the differential case (53020-3C300)?

It is actually the other way around. The 2012 3.8 R-spec Genesis Coup has a torsen LSD unit which "may" fit a 2015 or newer Genesis 5.0 sedan model as a bolt-on upgrade due to having the same rear end gear ratio.

I have been waiting for a used 3.8 R-spec limited slip rear end to be sold on Ebay for a while now to swap it in my 2015 5.0 RWD. I need the one with the 3.54 ratio to match my current rear axle.

 

[e.han]

This ratio you speak of, is it the reduction gear ratio?

Also, I always thought the 5.0 came with an LSD!

 

[carguy75]

This ratio you speak of, is it the reduction gear ratio?

Also, I always thought the 5.0 came with an LSD!

No, the final drive ratio.

The 5.0 has an open differential and uses the traction control system to control wheel spin.