Diff swap! (Installing an LSD manual trans differential into an Auto trans car) - Page 2

Corner carver · 04-11-2017, 05:23 AM

Quote:

Originally Posted by Jason@JacFab

Right. I seem to recall reading something that said if they were the same diameter once the wheel hop starts it will start it amplify itself, the different diameters will fight this.

The big axle feels like it's probably hollow.

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Ah... More like a synergistic frequency/vibration thing

notoriousstad · 05-04-2017, 06:09 PM

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Michigan1LTRS · 05-04-2017, 09:02 PM

Quote:

Originally Posted by cooper1965

How does the tuning for this work? Just a copy-paste from GM's original> Or, is that still a 327 ring gear?

Yeah, both 3.27

Jason@JacFab · 05-04-2017, 11:19 PM

I don't see why any tuning would be required. Same gearing, just adding the limited slip, and it's stronger.

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Jason@JacFab · 06-01-2017, 02:24 AM

The deed is done! I didn't have the time to do it myself with the new baby afoot, so I took everything to the local shop I take my cars to when I don't want to do something myself, or don't have time. I threw the axles and differential in the trunk and dropped it off at 8am this morning, not sure when they started it, but they called me at about 1:30 and said it was done. I asked one of the techs to take some pictures for you guys and got a couple worth sharing.

Diff out, not sure which axles are in...

This shows the diff out still, but the new axles are installed

Here is the new diff (left) shown next to the wimpy stock diff (right).

New diff and axles installed.

I can't say that I was the first one to do this swap. The ZZP boys beat me to it. I figured based on the part numbers in the Gm parts diagrams that all that was needed was the differential and axles, which if any of you have contemplated doing this type of swap in a 5th gen v6 cars, you'd know you'd also need to swap the hubs and sometimes the driveshaft, or the rear half of it, and sometimes the stock driveshaft would work fine. GM made it easy this time for us.

The only extra step needed (Which I found out before hand thanks to the ZZP boys), is that you need to swap the pinion flange from the old stock rear end onto the new rear end for the stock drive shaft to bolt up. Aside from that, it's a straight up bolt in.

Good thing on the pinion flange as it seems fedex must have dropped my new diff and the pinion flange i didn't need was pretty bent

Luckily, nothing else was damaged. The old a8 diff flange was swapped on and everything bolted right in according to plan.

The labor cost for the diff swap to be done at the shop I use was $375

Well worth it in my book considering my lack of time to do it myself...

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Corner carver · 06-01-2017, 05:58 AM

Sweetness, now go lay down some black stripes and break that baby in

...the car...not the actual baby...

Adp2017 · 06-01-2017, 07:33 AM

very cool!

Nate... · 06-01-2017, 08:48 AM

Excellent!

Dustya · 06-01-2017, 09:32 AM

Wait... so the auto 2.0 has 3.27 but the 3.6 auto has 2.73 ... Why did they do that so the Differential in the v6 A8 is its own part not shared with any other camaro.. Why would they not put the 3.27 in it as well ?

ChicagoTommy · 06-01-2017, 10:15 AM

Quote:

Originally Posted by Dustya

Wait... so the auto 2.0 has 3.27 but the 3.6 auto has 2.73 ... Why did they do that so the Differential in the v6 A8 is its own part not shared with any other camaro.. Why would they not put the 3.27 in it as well ?

Off the top of my head, fuel economy. Same reason the the V8 A4 4th gens had 3.23's, and V6 A4's & V8 M6 had 3.42's. But you could also get a 3.08 open and 3.23 open diff in a V6. So, GM has never made much sense with these choices.

ChicagoTommy · 06-01-2017, 10:18 AM

Quote:

Originally Posted by Jason@JacFab

The deed is done! I didn't have the time to do it myself with the new baby afoot, so I took everything to the local shop I take my cars to when I don't want to do something myself, or don't have time. I threw the axles and differential in the trunk and dropped it off at 8am this morning, not sure when they started it, but they called me at about 1:30 and said it was done. I asked one of the techs to take some pictures for you guys and got a couple worth sharing.

Diff out, not sure which axles are in...

This shows the diff out still, but the new axles are installed

Here is the new diff (left) shown next to the wimpy stock diff (right).

New diff and axles installed.

I can't say that I was the first one to do this swap. The ZZP boys beat me to it. I figured based on the part numbers in the Gm parts diagrams that all that was needed was the differential and axles, which if any of you have contemplated doing this type of swap in a 5th gen v6 cars, you'd know you'd also need to swap the hubs and sometimes the driveshaft, or the rear half of it, and sometimes the stock driveshaft would work fine. GM made it easy this time for us.

The only extra step needed (Which I found out before hand thanks to the ZZP boys), is that you need to swap the pinion flange from the old stock rear end onto the new rear end for the stock drive shaft to bolt up. Aside from that, it's a straight up bolt in.

Good thing on the pinion flange as it seems fedex must have dropped my new diff and the pinion flange i didn't need was pretty bent

Luckily, nothing else was damaged. The old a8 diff flange was swapped on and everything bolted right in according to plan.

The labor cost for the diff swap to be done at the shop I use was $375

Well worth it in my book considering my lack of time to do it myself...

Sent from my iPhone using Tapatalk

Very nice. I have a number in mind, and I think you're gonna be faster than that! Get it to the track!

Dustya · 06-01-2017, 11:48 AM

So can I simply get the gears from a 2.0 A8 and swap it onto my v6 ? not sure how much the gear ration difference will make in a A8 maybe .2 off in the 1/4 tops ?

ChicagoTommy · 06-01-2017, 12:28 PM

Quote:

Originally Posted by Dustya

So can I simply get the gears from a 2.0 A8 and swap it onto my v6 ? not sure how much the gear ration difference will make in a A8 maybe .2 off in the 1/4 tops ?

You would want a complete diff like JacFab did. You would want to get the 2.0t M6 diff, as it has a posi. I thought all the V6 cars came with posi? If that is the case, and you're really handy, you can disassemble a 2.0t A8 diff, then install the 3.27 ring gear in your stock diff with a posi. If you're going to go that far, why not upgrade to a 3.91 gear set? With the HUUUUUUUUGGGGEEEE overdrive of the A8, I'm sure the gas mileage wouldn't be bad.

Jason@JacFab · 06-01-2017, 01:49 PM

Quote:

Originally Posted by Dustya

So can I simply get the gears from a 2.0 A8 and swap it onto my v6 ? not sure how much the gear ration difference will make in a A8 maybe .2 off in the 1/4 tops ?

An automatic 2.0 differential should be a direct swap. If you want a manual trans diff to get the limited slip, you would have to change the axles also, like I did.

I made a post about this in the v6 section a few months back...

http://www.camaro6.com/forums/showthread.php?t=470721

Probably worth a couple tenths if you have good traction.

I'd be willing to sell my stock diff if you don't have to have a limited slip and just want it for the gear factor. 8k miles on it

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05-04-2017, 06:09 PM	#16
notoriousstad Drives: none Join Date: Feb 2016 Location: SoCal Posts: 34	Subscribed __________________ NotoriouSS TAD Betty - 17' Cam6 2.0T A8 2LT RS HMB J5 - 96' Impala SS - 4700lb autocross machine Langston 96' Caprice 9C1 Beater Rosie - 67' El Co - race truck w/ plates NoName - 73' Datsun 620 - LS7/TR6060/4.56/T2/NREMITT/9C1 guts

06-01-2017, 05:58 AM	#20
Corner carver Drives: 2017 Camaro 2.0T RS Join Date: Jul 2016 Location: Ontario Posts: 1,827	Sweetness, now go lay down some black stripes and break that baby in ...the car...not the actual baby... __________________ As Delivered: 2017 Mosaic Black 1LT RS 2.0T \| M6 \| HD brake and cooling \| Bose & 8"screen \| Front lip extension \| Blade spolier \| Black bowties \| Painted splash guards Installed Mods: 25% Window tint \| Headlight, side marker and third brake light Phastek tint kit \| GM black taillights with Gen5diy LED harness and bulbs \| LED license plate bulbs \| Gorilla lug nuts, black \| GM 'performance' center caps \| RS and sheild badges removed

06-01-2017, 07:33 AM	#21
Adp2017 Drives: 2017 RS Turbo Join Date: Aug 2016 Location: Burlington, Ontario Posts: 376	very cool! __________________ 2017 1LT \| RS \| 2.0T \| M6 331 rwhp , 350 rwtq ZZP Intercooler \| ZZP Catted DP \| Magnaflow Catback \| Injen CAI \| Tuned (BBR) \| CNC Honed Turbo (TPC) w 14lb actuator

06-01-2017, 08:48 AM	#22
Nate... Drives: 2016 Camaro LTG Join Date: Jul 2016 Location: SE Michigan Posts: 316	Excellent! __________________ 2016 LTG Camaro in Hyper Blue with MRT V3 Catback and Brembo SS Brakes.

05-04-2017, 11:19 PM	#18
Jason@JacFab Drives: 2016 1LT RS Camaro; 72 Chevelle Join Date: Apr 2008 Location: Central Point, OR Posts: 5,688 View My Garage	I don't see why any tuning would be required. Same gearing, just adding the limited slip, and it's stronger. Sent from my iPhone using Tapatalk

06-01-2017, 02:24 AM	#19
Jason@JacFab Drives: 2016 1LT RS Camaro; 72 Chevelle Join Date: Apr 2008 Location: Central Point, OR Posts: 5,688 View My Garage	The deed is done! I didn't have the time to do it myself with the new baby afoot, so I took everything to the local shop I take my cars to when I don't want to do something myself, or don't have time. I threw the axles and differential in the trunk and dropped it off at 8am this morning, not sure when they started it, but they called me at about 1:30 and said it was done. I asked one of the techs to take some pictures for you guys and got a couple worth sharing. Diff out, not sure which axles are in... This shows the diff out still, but the new axles are installed Here is the new diff (left) shown next to the wimpy stock diff (right). New diff and axles installed. I can't say that I was the first one to do this swap. The ZZP boys beat me to it. I figured based on the part numbers in the Gm parts diagrams that all that was needed was the differential and axles, which if any of you have contemplated doing this type of swap in a 5th gen v6 cars, you'd know you'd also need to swap the hubs and sometimes the driveshaft, or the rear half of it, and sometimes the stock driveshaft would work fine. GM made it easy this time for us. The only extra step needed (Which I found out before hand thanks to the ZZP boys), is that you need to swap the pinion flange from the old stock rear end onto the new rear end for the stock drive shaft to bolt up. Aside from that, it's a straight up bolt in. Good thing on the pinion flange as it seems fedex must have dropped my new diff and the pinion flange i didn't need was pretty bent Luckily, nothing else was damaged. The old a8 diff flange was swapped on and everything bolted right in according to plan. The labor cost for the diff swap to be done at the shop I use was $375 Well worth it in my book considering my lack of time to do it myself... Sent from my iPhone using Tapatalk

06-01-2017, 09:32 AM	#23
Dustya Drives: Overkill Supercharged 2016 CamaroV6 Join Date: Mar 2016 Location: Florida Posts: 982	Wait... so the auto 2.0 has 3.27 but the 3.6 auto has 2.73 ... Why did they do that so the Differential in the v6 A8 is its own part not shared with any other camaro.. Why would they not put the 3.27 in it as well ?

06-01-2017, 11:48 AM	#26
Dustya Drives: Overkill Supercharged 2016 CamaroV6 Join Date: Mar 2016 Location: Florida Posts: 982	So can I simply get the gears from a 2.0 A8 and swap it onto my v6 ? not sure how much the gear ration difference will make in a A8 maybe .2 off in the 1/4 tops ?

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