Pinion nut tourque numbers? - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

navyblueburnout · 08-24-2012, 10:54 AM

Does anyone know the tourque numbers on the pinion nut for a 10 camaro ssrs. I searched alldata and the forum but couldnt find anything. I even called the dealer but all the info they had was the size of the nut.

DJ_BigC · 08-24-2012, 12:29 PM

Its not necessarily a torque spec per say, its a rotational torque spec, if that makes any sense

Your essentially measuring the amount of torque it will take to turn the entire pinion assembly, the tighter the pinion nut, the more you collapse your collapsible sleeve, thus raising your rotational torque value. You'll check it with a small inch pound dial indicator style torque wrench while turning the pinion nut in the housing.

Someone who actually had a camaro diff apart can chime in to explain or confirm my explanation.

Go Fast Kid · 08-24-2012, 04:52 PM

Eric is correct, GM specs call for pinion pre-load, that is the amount or torque that is required to turn the pinion fully installed.

The manual calls for 18-27 inches of preload on the pinion, for the V8 differential.

Buy a inch pound wrench. Make sure the bearing and gears are fully seated, and lightly lubricate before you check.

DJ_BigC · 08-24-2012, 11:33 PM

Oh and I forgot to mention,

If you go over spec for you pinion preload, you cant just back off the nut and call it a day, you need to remove the yoke and install a new collapsible sleeve an start over.

Ucantctchme · 08-26-2012, 11:32 AM

Remember to not use a click type torque wrench to measure preload. Turn the pinion at a constant speed, that is pinion bearing preload. The reading on the torque wrench will be a little higher just before the pinion starts to turn, don't worry about that.

frey.199 · 11-18-2020, 01:03 PM

Brining up an old thread. I'm about to remove my yoke to replace it, so I need to remove the pinion bolt. Does this mean I need to purchase a new collapsible sleeve for it as well when installing the new yoke?

Black_SS10 · 11-18-2020, 01:33 PM

Quote:

Originally Posted by frey.199

Brining up an old thread. I'm about to remove my yoke to replace it, so I need to remove the pinion bolt. Does this mean I need to purchase a new collapsible sleeve for it as well when installing the new yoke?

Yes. Get a new nut as well.

08-24-2012, 10:54 AM	#1
navyblueburnout navyblueburnout Drives: 2010 Camaro 2SS Join Date: Sep 2011 Location: Oklahoma City, OK Posts: 199 View My Garage	Pinion nut tourque numbers? Does anyone know the tourque numbers on the pinion nut for a 10 camaro ssrs. I searched alldata and the forum but couldnt find anything. I even called the dealer but all the info they had was the size of the nut. __________________ Proud member of the Never going back to Moderncamaro.com club!

08-24-2012, 12:29 PM	#2
DJ_BigC Rockin' Steady Drives: 2010 Camaro 2SS Join Date: Apr 2012 Location: Timmins Posts: 216	Its not necessarily a torque spec per say, its a rotational torque spec, if that makes any sense Your essentially measuring the amount of torque it will take to turn the entire pinion assembly, the tighter the pinion nut, the more you collapse your collapsible sleeve, thus raising your rotational torque value. You'll check it with a small inch pound dial indicator style torque wrench while turning the pinion nut in the housing. Someone who actually had a camaro diff apart can chime in to explain or confirm my explanation. __________________ Eric Carrier, proud GM Technician for over 10yrs. 2010 Camaro 2SS Black, L99, SLP headers, GMPP axle back, complete JRE tune, 22" Boss 337's, Nitto Invos 5% tint, Eforce Supercharger w. 3" pulley, ADM FPCM, ID850's, JRE fuel rail mod, Eforce CAI, Moroso catch can, spark plug insulators. Last edited by DJ_BigC; 08-24-2012 at 11:31 PM.

08-24-2012, 11:33 PM	#4
DJ_BigC Rockin' Steady Drives: 2010 Camaro 2SS Join Date: Apr 2012 Location: Timmins Posts: 216	Oh and I forgot to mention, If you go over spec for you pinion preload, you cant just back off the nut and call it a day, you need to remove the yoke and install a new collapsible sleeve an start over. __________________ Eric Carrier, proud GM Technician for over 10yrs. 2010 Camaro 2SS Black, L99, SLP headers, GMPP axle back, complete JRE tune, 22" Boss 337's, Nitto Invos 5% tint, Eforce Supercharger w. 3" pulley, ADM FPCM, ID850's, JRE fuel rail mod, Eforce CAI, Moroso catch can, spark plug insulators.

08-24-2012, 04:52 PM	#3
Go Fast Kid Drives: Camaro 2010 SS LS7 427ci Join Date: Nov 2009 Location: Miami Posts: 61	Eric is correct, GM specs call for pinion pre-load, that is the amount or torque that is required to turn the pinion fully installed. The manual calls for 18-27 inches of preload on the pinion, for the V8 differential. Buy a inch pound wrench. Make sure the bearing and gears are fully seated, and lightly lubricate before you check.

08-26-2012, 11:32 AM	#5
Ucantctchme Drives: 2010 ss. 1990 RS the faster one. Join Date: Jan 2011 Location: Orlando Posts: 549	Remember to not use a click type torque wrench to measure preload. Turn the pinion at a constant speed, that is pinion bearing preload. The reading on the torque wrench will be a little higher just before the pinion starts to turn, don't worry about that.

11-18-2020, 01:03 PM	#6
frey.199 Drives: 2010 Camaro 2SS Join Date: Apr 2019 Location: Granville, Ohio Posts: 260 View My Garage	Brining up an old thread. I'm about to remove my yoke to replace it, so I need to remove the pinion bolt. Does this mean I need to purchase a new collapsible sleeve for it as well when installing the new yoke?