3.91 break in procedure, 2 1/2 hr drive home from shop - Page 2 - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

ssmike · 04-02-2013, 10:15 AM

Quote:

Originally Posted by NinoSS

JRE installed my 3.91's. I live about 1 hr 45 min away. Ted had his son take my car out for the first 20-25 minute run, then we let them cool down. He then told me to take it easy for a couple hundered miles, then I should be good. He said change the diff oil at about 1000 miles.. Mine are very quiet BTW...

How did you drive it home for the 1 hr 45 min drive? Was it all highway or combo city highway. What speeds did you go?

xtreme2s · 04-05-2013, 02:21 PM

Great info.

I also had over the winter 3:91 installed via Livernois, and just today, weather nice to get Camaro out to start temper process.

mrvenicess · 04-05-2013, 03:15 PM

We ran mine for a while on the hoist then left it overnight. A drive for about half and hour then cooled it down for a couple of hours before I picked it up and drove it home, 40 miles, at 55 mph. After that I took it fairly easy for the next 500 miles before I went to the track. Gears have been dead silent for the past 10,000 miles.

xtreme2s · 04-05-2013, 03:48 PM

Quote:

Originally Posted by HRD_WRK

Hey Tim.

After my local temper runs/first hundreds of miles, well have to cruise around together for the last hundreds-road trip.

Tim

Absolutley!!

NinoSS · 04-05-2013, 05:37 PM

Quote:

Originally Posted by ssmike

How did you drive it home for the 1 hr 45 min drive? Was it all highway or combo city highway. What speeds did you go?

He just told me to take it easy, not to go over 65. She's just fine...

Tampa Tuning · 04-06-2013, 02:28 AM

I had my clutch and rear end gears done at the same time. I had a 2 1/2 hour trip home on the turnpike from the shop in south NJ that did the work.

Maybe it stopped to hit the head and grab some turnpike food on the way home, but that was it. Kept it under 70 and 4000 RPMs for 1000 LLLLLLLLong miles, then changed the differial fluid. Never was an issue.

The clutch on the other hand chatter at enguagement from the shop until yesterday (7 years later), when I got tired of it and left it at the shop for a new clutch.

How many heat cycles do you think GM puts on their gears before it hits the showroom floor.

ssmike · 04-06-2013, 08:42 AM

I just talked to the shop owner where I'm having them done and he said that they will do the initial break-in and that if I keep it under 65 with a couple cool downs I should be fine. I do agree that these GM gears are hardened and ready to go so I'm not too worried now! If these were Richmond gears I'd be more concerned! I appreciate everyone's advice and experiences!

Twoblindsheep · 04-06-2013, 09:18 AM

wait the GM gears are hardened already?

ssmike · 04-06-2013, 09:37 AM

Quote:

Originally Posted by Twoblindsheep

wait the GM gears are hardened already?

Maybe I meant heat cycled!

Twoblindsheep · 04-06-2013, 09:39 AM

yeah i didnt even know about the heat cycle...
im doing this in may.. already got the gears and posi mod

ssmike · 04-06-2013, 10:54 AM

Quote:

Originally Posted by dynosteve

look forward to seeing you this coming week mike

Me too Steve!

Quote:

Originally Posted by Twoblindsheep

yeah i didnt even know about the heat cycle...
im doing this in may.. already got the gears and posi mod

I've had my gears since early December and it's been driving me

! Can't wait to get them installed and broken in!

Twoblindsheep · 04-07-2013, 12:03 AM

same... i had to sell mine since i was deployed and wasnt going to put it on soon... i dont come back till may.. and i already have another set ready lol

Rico · 04-07-2013, 12:36 AM

Stupid question, but what is the major difference between these and stock gears?

Twoblindsheep · 04-07-2013, 12:43 AM

more torq.. i believe 13% more on the LS3 and like 20% more on the L99...

BAM!

"This lower (higher numerically) ratio rear drive gear will increase effective rear wheel torque multiplication in 2010 - 2013 SS Camaros by 13% (over standard 3.45 ratio) in a manual tansmission-equipped car, and 20% (over standard 3.27) in an automatic-equipped car."

04-06-2013, 02:28 AM	#20
Tampa Tuning Account Suspended Drives: TAMPA TUNING FACEBOOK & INSTAGRAM Join Date: Oct 2010 Location: Tampa, Fl Posts: 3,044	Camaro Corvette GTO CTS G8 Firebird Truck performance tuner in Tampa Orlando I had my clutch and rear end gears done at the same time. I had a 2 1/2 hour trip home on the turnpike from the shop in south NJ that did the work. Maybe it stopped to hit the head and grab some turnpike food on the way home, but that was it. Kept it under 70 and 4000 RPMs for 1000 LLLLLLLLong miles, then changed the differial fluid. Never was an issue. The clutch on the other hand chatter at enguagement from the shop until yesterday (7 years later), when I got tired of it and left it at the shop for a new clutch. How many heat cycles do you think GM puts on their gears before it hits the showroom floor.

04-05-2013, 02:21 PM	#16
xtreme2s Drives: Livernois Motorsports 2010 2SS/RS Join Date: Feb 2012 Location: Iowa Posts: 445 View My Garage	Great info. I also had over the winter 3:91 installed via Livernois, and just today, weather nice to get Camaro out to start temper process.

04-05-2013, 03:15 PM	#17
mrvenicess Drives: 2013 CRT ZL1 auto Join Date: May 2010 Location: Venice Fl Posts: 1,443 View My Garage	We ran mine for a while on the hoist then left it overnight. A drive for about half and hour then cooled it down for a couple of hours before I picked it up and drove it home, 40 miles, at 55 mph. After that I took it fairly easy for the next 500 miles before I went to the track. Gears have been dead silent for the past 10,000 miles.

04-06-2013, 08:42 AM	#21
ssmike BL1ZZRD Drives: '16 Camaro 2SS, '20 Equinox Redline Join Date: Jul 2009 Location: Buffalo, NY Posts: 7,840	I just talked to the shop owner where I'm having them done and he said that they will do the initial break-in and that if I keep it under 65 with a couple cool downs I should be fine. I do agree that these GM gears are hardened and ready to go so I'm not too worried now! If these were Richmond gears I'd be more concerned! I appreciate everyone's advice and experiences!

04-06-2013, 09:18 AM	#22
Twoblindsheep [COTW 1/6/14] Drives: 2017 1LE Join Date: Mar 2012 Location: Scott AFB/STL Posts: 2,004	wait the GM gears are hardened already?

04-06-2013, 09:39 AM	#24
Twoblindsheep [COTW 1/6/14] Drives: 2017 1LE Join Date: Mar 2012 Location: Scott AFB/STL Posts: 2,004	yeah i didnt even know about the heat cycle... im doing this in may.. already got the gears and posi mod

04-07-2013, 12:03 AM	#26
Twoblindsheep [COTW 1/6/14] Drives: 2017 1LE Join Date: Mar 2012 Location: Scott AFB/STL Posts: 2,004	same... i had to sell mine since i was deployed and wasnt going to put it on soon... i dont come back till may.. and i already have another set ready lol

04-07-2013, 12:36 AM	#27
Rico Flying da helicopter Drives: Black SS/RS Join Date: Oct 2009 Location: HI Posts: 1,215 View My Garage	Stupid question, but what is the major difference between these and stock gears?

04-07-2013, 12:43 AM	#28
Twoblindsheep [COTW 1/6/14] Drives: 2017 1LE Join Date: Mar 2012 Location: Scott AFB/STL Posts: 2,004	more torq.. i believe 13% more on the LS3 and like 20% more on the L99... BAM! "This lower (higher numerically) ratio rear drive gear will increase effective rear wheel torque multiplication in 2010 - 2013 SS Camaros by 13% (over standard 3.45 ratio) in a manual tansmission-equipped car, and 20% (over standard 3.27) in an automatic-equipped car."