ZL1 Differential Service - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

1LeSS · 07-22-2017, 02:47 AM

I've ordered and am installing a ZL1 read diff and axles in my SS 1LE. Too much power out the front ate the little guy that was in the rear before.

What I am wondering from all you ZL1 owners is the correct diff oil being used and whether you need to add a limited slip additive to the diff. This was a quick forced decision I made to go with the ZL1 diff so need some info on it ASAP. Cant trust the dealer because they don't sell ZL1's.

I'm assuming that it is just a bigger ring and pinion and still the GM limited slip type of rear end? I needed strength ASAP so went this route.

Thanks

NZZL1 · 07-22-2017, 04:32 AM

The standard spec ACDelco 10-4034 Dexron LS 75W-90 Gear Oil contains the friction modifier. The ZL1 diff is completely different from an SS, massive Dana unit, heat exchanger, etc.

1LeSS · 07-22-2017, 01:17 PM

Thankyou for the quick response. I was told by the dealer that the heat exchanger is only there to keep the oil at a perfect temp in the zl1 for racing. In normal day to day usage, would one need that? I have plans to get it out of the dealership and install that part on my own.
Also any source known that provides good info on the zl1 differential?? I've been hunting but ...

jrhagen · 07-22-2017, 01:21 PM

I've had a ZL1 diff in my SS for a few years. I don't put a lot of miles on it but the miles I do are more than a little hard.

I have no cooler installed. No issues with it yet. I change the fluid annually.

NZZL1 · 07-22-2017, 05:59 PM

Quote:

Originally Posted by 1LeSS

Also any source known that provides good info on the zl1 differential?? I've been hunting but ...

Google is your friend...

22959394 Manual Transmission 3.73 Ratio
22959395 Automatic Transmission 3.23 Ratio

http://media.gm.com/media/us/en/chev...0-new-zl1.html

1LeSS · 07-23-2017, 01:00 PM

real good Info from google!! Thanks

and JRHAGEN, exactly what I wanted to hear!! Thanks all!! I will keep watching this thread for any other input!

Quote:

Originally Posted by NZZL1

Google is your friend...

22959394 Manual Transmission 3.73 Ratio
22959395 Automatic Transmission 3.23 Ratio

http://media.gm.com/media/us/en/chev...0-new-zl1.html

jrhagen · 07-23-2017, 01:24 PM

Quote:

Originally Posted by 1LeSS

real good Info from google!! Thanks

and JRHAGEN, exactly what I wanted to hear!! Thanks all!! I will keep watching this thread for any other input!

I beat the hell out of it, maintenance is the key.

1LeSS · 07-26-2017, 12:15 PM

Ok, got the diff, plugged the holes. went to put my DSS one piece drive shaft in and the yoke on the drive shaft is too small for the yoke on the differential!
Mr Hagen, what did you do to mate your driveshaft to the yoke on the zl1 diff? or did you buy your driveshaft as you were building the drivetrain? Called DSS and they wont sell me just an adapter, they want my whole driveshaft back to mate the adapter to the driveshaft and make sure its vibration proff. 4 week turn around time so its not realistic.
LOOKING FOR ANY IDEAS ON MATING THIS DSS DRIVESHAFT TO THE ZL1.
bEEN MAKING CALLS TO THE VARIOUS PERFORMANCE PLACES BUT THEY HAVE NOTHING.

Quote:

Originally Posted by jrhagen

I beat the hell out of it, maintenance is the key.

jrhagen · 07-26-2017, 12:39 PM

Quote:

Originally Posted by 1LeSS

Ok, got the diff, plugged the holes. went to put my DSS one piece drive shaft in and the yoke on the drive shaft is too small for the yoke on the differential!
Mr Hagen, what did you do to mate your driveshaft to the yoke on the zl1 diff? or did you buy your driveshaft as you were building the drivetrain? Called DSS and they wont sell me just an adapter, they want my whole driveshaft back to mate the adapter to the driveshaft and make sure its vibration proff. 4 week turn around time so its not realistic.
LOOKING FOR ANY IDEAS ON MATING THIS DSS DRIVESHAFT TO THE ZL1.
bEEN MAKING CALLS TO THE VARIOUS PERFORMANCE PLACES BUT THEY HAVE NOTHING.

When I ordered the 4L80e trans, I informed them I have a ZL1 diff. DSS made the driveshaft accordingly.

fif_gen_powa · 07-26-2017, 12:58 PM

Sell the SS driveshaft and buy a ZL1 driveshaft

1LeSS · 07-26-2017, 03:14 PM

Quote:

Originally Posted by fif_gen_powa

Sell the SS driveshaft and buy a ZL1 driveshaft

That is what just happened. My DSS drive shaft is going up for sale and I am putting in a new ZL1 drive shaft. So after ten days in the shop, I have to wait another few days. Arrrggg. The problem with living in the far north of Canada. It takes forever to get stuff up here!!

but at least I shouldn't have problems selling my DSS shaft.

07-22-2017, 02:47 AM	#1
1LeSS Drives: 2013 2SS/RS VR 1LE Join Date: Jan 2013 Location: Prince George, B.C. Posts: 486	ZL1 Differential Service I've ordered and am installing a ZL1 read diff and axles in my SS 1LE. Too much power out the front ate the little guy that was in the rear before. What I am wondering from all you ZL1 owners is the correct diff oil being used and whether you need to add a limited slip additive to the diff. This was a quick forced decision I made to go with the ZL1 diff so need some info on it ASAP. Cant trust the dealer because they don't sell ZL1's. I'm assuming that it is just a bigger ring and pinion and still the GM limited slip type of rear end? I needed strength ASAP so went this route. Thanks __________________ BC Racing coil-overs, 32ml rear sway bar, Solid cradle bushing kit, Steel jacket radius rod bushes, JPSS caster bolt, Bo White TB, Granitelli HP coils, Apex Catchcan, Vortech V7 Ysi Supercharger, LSX B-15 engine, custom spec cam, and other stuff.

07-22-2017, 01:17 PM	#3
1LeSS Drives: 2013 2SS/RS VR 1LE Join Date: Jan 2013 Location: Prince George, B.C. Posts: 486	Thankyou for the quick response. I was told by the dealer that the heat exchanger is only there to keep the oil at a perfect temp in the zl1 for racing. In normal day to day usage, would one need that? I have plans to get it out of the dealership and install that part on my own. Also any source known that provides good info on the zl1 differential?? I've been hunting but ... __________________ BC Racing coil-overs, 32ml rear sway bar, Solid cradle bushing kit, Steel jacket radius rod bushes, JPSS caster bolt, Bo White TB, Granitelli HP coils, Apex Catchcan, Vortech V7 Ysi Supercharger, LSX B-15 engine, custom spec cam, and other stuff.

07-26-2017, 12:58 PM	#10
fif_gen_powa Drives: 2013 Camaro SS Turbo Join Date: Apr 2014 Location: South Florida Posts: 1,525	Sell the SS driveshaft and buy a ZL1 driveshaft __________________ 388ci 91/104 Turbo TH400 8.3@164 https://instagram.com/turbo_ls3/

07-22-2017, 04:32 AM	#2
NZZL1 Drives: 2013 BRM ZL1 Camaro M6 Join Date: Feb 2014 Location: Auckland, New Zealand Posts: 164 View My Garage	The standard spec ACDelco 10-4034 Dexron LS 75W-90 Gear Oil contains the friction modifier. The ZL1 diff is completely different from an SS, massive Dana unit, heat exchanger, etc.

07-22-2017, 01:21 PM	#4
jrhagen Banned Drives: Camaro Join Date: Mar 2013 Location: USA Posts: 2,701	I've had a ZL1 diff in my SS for a few years. I don't put a lot of miles on it but the miles I do are more than a little hard. I have no cooler installed. No issues with it yet. I change the fluid annually.