ZL1 diff & driveline upgrade - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

Avalnch · 07-13-2016, 03:43 AM

Well, the inevitable happened. Something broke and it was the rear end.

Went to Mission Raceway Park a few weeks back and on the last launch, had some wheel hop and the rearend started to howl and make noise.

Limped it back home and it's been parked since waiting on the dealer to bring in the ZL1 upgrade kit.

Going in the shop this week for the swap. This kit is not cheap, but at least now I can go the next step in power mods, if I so desire (sinister laughter follows).

Surfdog SS · 07-18-2016, 07:14 PM

Hey man how do you like your 391 gears? I just did my first mods, cam and suspension next. I was just wondering if its to much once you get 450+ rwhp

MA2010SS · 07-19-2016, 06:01 AM

You're going to like the ZL1 driveline kit, nice upgrade to the stock SS driveline. Only downfall is it's pretty damn heavy

flyer08 · 07-19-2016, 09:52 AM

Quote:

Originally Posted by Surfdog SS

Hey man how do you like your 391 gears? I just did my first mods, cam and suspension next. I was just wondering if its to much once you get 450+ rwhp

3.91s make the car fun. I also installed the ss4 at the same time but I love it.

Avalnch · 07-19-2016, 09:53 AM

Quote:

Originally Posted by Surfdog SS

Hey man how do you like your 391 gears? I just did my first mods, cam and suspension next. I was just wondering if its to much once you get 450+ rwhp

The 3.91 gears are awesome, they add so much get up and go to the drive. But in the quarter I had to shift to 4th.

The ZL1 gear set will be 3.73 which I think will keep me out of 4th on the track and 3rd in the autocrosses.

Surfdog SS · 07-19-2016, 07:02 PM

Thats what I been contemplating 3.91 or 3.73 especially if I add boost later. I thought zl1 was the same 3.91

Crash76 · 07-19-2016, 07:08 PM

3.23 auto, 3.73 manual

Avalnch · 08-02-2016, 09:05 PM

Finally home from an extended work trip and have put on 300 kms on the new ZL1 drive line. My impression of the ZL1 rearend, axles and driveshaft is that it feels more substantial under throttle and there is absolutely no noise (so far). The diff housing is HUGE and I'm lucky that my SS designed exhaust clears it.

There is a slight difference in the "seat of your pants" feel versus the 3.91 gears, but not that substantial. The 3.73's are really more street friendly and I'm hoping that I'll be able to finish the 1/4 in third gear now.

Would like to put another 300 kms to put on it before my first auto-x event mid-August. I think it will be easier to drive as it will be less sensitive to throttle input and make it smoother on the tarmac.

Moto-Mojo · 08-14-2016, 07:48 AM

Please post some pics of the ZL1 driveline. Thanks.

swiftkart · 08-16-2016, 10:40 AM

[QUOTE=Avalnch;9237376] I'm hoping that I'll be able to finish the 1/4 in third gear now.

Not with your horse power, you should have went with the 3.23 ratio if that's what you wanted.

Avalnch · 08-16-2016, 03:56 PM

[QUOTE=swiftkart;9261834]

Quote:

Originally Posted by Avalnch

I'm hoping that I'll be able to finish the 1/4 in third gear now.

Not with your horse power, you should have went with the 3.23 ratio if that's what you wanted.

Thanks for the confirmation. Yeah, everyone's been telling me this. The 1/4 mile is not important, just would have been nice.

Avalnch · 08-17-2016, 08:04 PM

Quote:

Originally Posted by Moto-Mojo

Please post some pics of the ZL1 driveline. Thanks.

This thing is massive. Exhaust on the passenger side barely clears.
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RaiderSS · 09-28-2016, 01:40 PM

Quote:

Originally Posted by Avalnch

This thing is massive. Exhaust on the passenger side barely clears.
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Did you have to do anything to your SS rear cradle? Banging, cutting, enlarging bolt holes?

Moto-Mojo · 10-03-2016, 02:35 PM

Am I looking at axle half shafts or the main driveline?

07-13-2016, 03:43 AM	#1
Avalnch Drives: Rally Yellow Camaro+Avalanche Join Date: Dec 2009 Location: Vancouver Posts: 1,110	ZL1 diff & driveline upgrade Well, the inevitable happened. Something broke and it was the rear end. Went to Mission Raceway Park a few weeks back and on the last launch, had some wheel hop and the rearend started to howl and make noise. Limped it back home and it's been parked since waiting on the dealer to bring in the ZL1 upgrade kit. Going in the shop this week for the swap. This kit is not cheap, but at least now I can go the next step in power mods, if I so desire (sinister laughter follows). __________________ Vengeance Kaotik Cam, C.A.I., ARH LT, Pypes Cat Back, ZL1 Shifter+2012LS3VERT bushing, Quantum Brake Ducts, JDP Tow Hook Scorch Yellow Trim Kit, Shark Fin, AAC DRLs+ABLs+SMDs, ZTA Rear Spoiler, R.Y. 1LE Splitter. Pfadt coilovers, camber plates, trailing arms, Pegasus Solid Subframe. Pedders ZL1 barz, radius arm & steering rack bushings. BMR adjustable toe-rods. Hotchkis Max Chassis Brace. ZL1 GMPP Driveline Upgrade. TurnOne P/S pump. CTS-V 6 pistons. 447 HP @ 6180 RPM / 418 TQ @ 5100 RPM

07-18-2016, 07:14 PM	#2
Surfdog SS Drives: 2015 SS Black/Black Join Date: Jun 2016 Location: Florida Posts: 158	Hey man how do you like your 391 gears? I just did my first mods, cam and suspension next. I was just wondering if its to much once you get 450+ rwhp __________________ 2015 2SS M6 Stainless Power LT header w/ hf cats, NPP axle backs, ECS Novi 1500 SC, ATI 10% UD, BMR 1.25 springs, trailing arms, and bushings, short thow shifter, Z28 replica rims, BTR stage 2 centrifugal cam, zl1 pump, FIC 1000, and flex fuel

07-19-2016, 06:01 AM	#3
MA2010SS Drives: 2010 Camaro SS Join Date: Aug 2010 Location: Somerset MA Posts: 725 View My Garage	You're going to like the ZL1 driveline kit, nice upgrade to the stock SS driveline. Only downfall is it's pretty damn heavy __________________ 2010 Camaro SS Whipple SC, CAI Inc Intake, TSP 1 7/8" LT headers no cats, 3" magnaflow exhaust, HPT, RX Catch Can, LSR Toe Rods, LSR Trailing Arms, ALKY Control Meth, McLeod RXT Twin Disc, ZL1 fuel pump, 3.73 ZL1 Differential Kit, BTR PDS Stage 2 Cam, Tuned by SLOWHAWK Performance Bridgewater MA

07-19-2016, 07:02 PM	#6
Surfdog SS Drives: 2015 SS Black/Black Join Date: Jun 2016 Location: Florida Posts: 158	Thats what I been contemplating 3.91 or 3.73 especially if I add boost later. I thought zl1 was the same 3.91 __________________ 2015 2SS M6 Stainless Power LT header w/ hf cats, NPP axle backs, ECS Novi 1500 SC, ATI 10% UD, BMR 1.25 springs, trailing arms, and bushings, short thow shifter, Z28 replica rims, BTR stage 2 centrifugal cam, zl1 pump, FIC 1000, and flex fuel

08-02-2016, 09:05 PM	#8
Avalnch Drives: Rally Yellow Camaro+Avalanche Join Date: Dec 2009 Location: Vancouver Posts: 1,110	Finally home from an extended work trip and have put on 300 kms on the new ZL1 drive line. My impression of the ZL1 rearend, axles and driveshaft is that it feels more substantial under throttle and there is absolutely no noise (so far). The diff housing is HUGE and I'm lucky that my SS designed exhaust clears it. There is a slight difference in the "seat of your pants" feel versus the 3.91 gears, but not that substantial. The 3.73's are really more street friendly and I'm hoping that I'll be able to finish the 1/4 in third gear now. Would like to put another 300 kms to put on it before my first auto-x event mid-August. I think it will be easier to drive as it will be less sensitive to throttle input and make it smoother on the tarmac. __________________ Vengeance Kaotik Cam, C.A.I., ARH LT, Pypes Cat Back, ZL1 Shifter+2012LS3VERT bushing, Quantum Brake Ducts, JDP Tow Hook Scorch Yellow Trim Kit, Shark Fin, AAC DRLs+ABLs+SMDs, ZTA Rear Spoiler, R.Y. 1LE Splitter. Pfadt coilovers, camber plates, trailing arms, Pegasus Solid Subframe. Pedders ZL1 barz, radius arm & steering rack bushings. BMR adjustable toe-rods. Hotchkis Max Chassis Brace. ZL1 GMPP Driveline Upgrade. TurnOne P/S pump. CTS-V 6 pistons. 447 HP @ 6180 RPM / 418 TQ @ 5100 RPM

07-19-2016, 07:08 PM	#7
Crash76 Team 913 Drives: '14 ZL1, '15 Jeep GC, ‘22 Ram 2500 Join Date: Apr 2015 Location: USA, Central CA Posts: 1,119	3.23 auto, 3.73 manual

08-14-2016, 07:48 AM	#9
Moto-Mojo Fast Cars and Old Guitars Drives: 2015 2SS RS (L99, baby!) Join Date: Apr 2012 Location: N. CA Posts: 3,973	Please post some pics of the ZL1 driveline. Thanks. __________________ “I don’t want to belong to any club that would have me as a member.” - Groucho Marx

08-16-2016, 10:40 AM	#10
swiftkart Drives: 2010 SS/RS LS3 M6 Join Date: Apr 2011 Location: Kansas Posts: 693	[QUOTE=Avalnch;9237376] I'm hoping that I'll be able to finish the 1/4 in third gear now. Not with your horse power, you should have went with the 3.23 ratio if that's what you wanted.

10-03-2016, 02:35 PM	#14
Moto-Mojo Fast Cars and Old Guitars Drives: 2015 2SS RS (L99, baby!) Join Date: Apr 2012 Location: N. CA Posts: 3,973	Am I looking at axle half shafts or the main driveline? __________________ “I don’t want to belong to any club that would have me as a member.” - Groucho Marx