Torque Specs for crankshaft pulley LS3 - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

Colby627 · 03-03-2012, 03:40 PM

Does anyone know what the final torque would be around after you follow the initial torque of 37 ft lbs and then turn an additional 140 degrees?

epstein · 03-03-2012, 03:45 PM

its a one time use stretch bolt that is why its in degrees and not torque

Colby627 · 03-03-2012, 03:46 PM

understood, but there is limited room to properly identify when you have reached that 140 degree mark, just wondering if anyone checked the torque after the 140 degree?

yotaman96 · 03-03-2012, 03:55 PM

240 ft lbs

BOSS_HOSS · 03-03-2012, 06:03 PM

You use the OLD crank bolt and torque it to 240 ft/lb to secure the balancer in place...remove it...and install a NEW crank bolt...torque to 37ft/lb then 140 degrees. Just mark the bolt and then mark the balancer at 140 degrees from the mark on the bolt.

Eric Baker · 03-04-2012, 11:03 AM

Quote:

Originally Posted by BOSS_HOSS

You use the OLD crank bolt and torque it to 240 ft/lb to secure the balancer in place...remove it...and install a NEW crank bolt...torque to 37ft/lb then 140 degrees. Just mark the bolt and then mark the balancer at 140 degrees from the mark on the bolt.

What this guy said. For me, it was basically as tight as I could get it with a 2ft breaker bar.

Rhino79 · 02-26-2013, 10:10 AM

Sorry to bring back from the dead, but 37 ft lb plus 140 will not always equal a certain ft lb. It has to do with bolt stretch, not torque in ft lbs. For instance the one I just did this morning at 141* on my snap on torque wrench (digital) showed the final ft lb to be 274. I see this all the time on head bolts, just because they are 22 ft lbs + 90* + 70* doesnt mean they always end at the same torque in ft lbs. Some will end around 85-90 where some will be at 70-75.

Proper bolt stretch is key to ensure proper clamp. Thread distortion, debris in bolt holes, will skew ft lb readings, but will no skew direct torque angle.

03-03-2012, 03:40 PM	#1
Colby627 Drives: 2010 2SS LSA-S/C 6.6 L Join Date: Sep 2011 Location: Huffman, Texas Posts: 131 View My Garage	Torque Specs for crankshaft pulley LS3 Does anyone know what the final torque would be around after you follow the initial torque of 37 ft lbs and then turn an additional 140 degrees?

03-03-2012, 03:55 PM	#4
yotaman96 Drives: 2017 Camaro SS1LE 2000 Trans Am WS6 Join Date: Jul 2008 Location: Portland, TN Posts: 2,955 View My Garage	240 ft lbs __________________ 2017 Krypton Green SS 1LE Magnacharged 2000 Trans Am WS6 manual trans 2002 Trans Am 2015 Ram Crew Cab Cummins

03-03-2012, 06:03 PM	#5
BOSS_HOSS Drives: 2010 Camaro SS Join Date: Jan 2011 Location: Petawawa, ON Posts: 151	You use the OLD crank bolt and torque it to 240 ft/lb to secure the balancer in place...remove it...and install a NEW crank bolt...torque to 37ft/lb then 140 degrees. Just mark the bolt and then mark the balancer at 140 degrees from the mark on the bolt. __________________ 2010 2SS/RS 1 7/8" Long Tube American Racing Headers w/high flow cats, Borla S-Type Catback Exhaust, Roto-Fab CAI, VMAX Ported Throttle Body, MGW Shifter, JRE 445 Street Cam Package tuned via SCT, Pedders Street 1 Kit.

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
TR6060 transmission torque specs?	wht2ssrs11	5th Gen Camaro SS LS LT General Discussions	0	01-06-2011 03:16 PM
LS3 engine specifications	Tran	Wiki	3	10-06-2010 10:56 PM
Manual vs Auto GTAHVIT vs PQ... The video wars.	76z28	5th Gen Camaro SS LS LT General Discussions	443	08-26-2010 12:26 PM
Specs on L99 vs LS3 ....	Bowtie Junkman	Camaro V8 LS3 / L99 Engine, Exhaust, and Bolt-Ons	3	04-28-2010 12:26 PM
LS3 Specs revealed: GM's 436hp Sick 6.2L LS3	TAG UR IT	Camaro V8 LS3 / L99 Engine, Exhaust, and Bolt-Ons	28	07-30-2009 06:02 PM

03-03-2012, 03:45 PM	#2
epstein Account Suspended Drives: SS/RS Join Date: May 2010 Location: Transplanted from NYC..(ret. NYPD).Now in CT Posts: 904	its a one time use stretch bolt that is why its in degrees and not torque

03-03-2012, 03:46 PM	#3
Colby627 Drives: 2010 2SS LSA-S/C 6.6 L Join Date: Sep 2011 Location: Huffman, Texas Posts: 131 View My Garage	understood, but there is limited room to properly identify when you have reached that 140 degree mark, just wondering if anyone checked the torque after the 140 degree?

02-26-2013, 10:10 AM	#7
Rhino79 Drives: 2010 Camaro SS L99/Auto Join Date: Jul 2011 Location: Cabot, AR Posts: 2,827 View My Garage	Sorry to bring back from the dead, but 37 ft lb plus 140 will not always equal a certain ft lb. It has to do with bolt stretch, not torque in ft lbs. For instance the one I just did this morning at 141* on my snap on torque wrench (digital) showed the final ft lb to be 274. I see this all the time on head bolts, just because they are 22 ft lbs + 90* + 70* doesnt mean they always end at the same torque in ft lbs. Some will end around 85-90 where some will be at 70-75. Proper bolt stretch is key to ensure proper clamp. Thread distortion, debris in bolt holes, will skew ft lb readings, but will no skew direct torque angle.