[Z06] Ls7 Bolt Torque Specs

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05-04-2008, 01:34 AM

USA1-ZO6

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Ls7 Bolt Torque Specs

Needing LS7 bolt torque specs, any help greatly appreciated! THANKS

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05-04-2008, 01:50 AM

vetteship

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Which bolt ?

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05-04-2008, 02:50 AM

toxin440

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Quote:

Originally Posted by vetteship

Which bolt ?

you mean there is more then one?

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05-04-2008, 06:50 AM

1coolC2

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These numbers are from one of the builders at Wixom. Sorry it's jumbled up a little, I had to copy it off a spread sheet and it won't keep the formating. Hope this helps.
R/
Jeff

DESCRIPTION TORQUE(Nm.)
CAMSHAFT RETAINER BOLT 25 +/- 4
OIL GALLERY PLUG 60 +/- 10
INNER MAIN BEARING CAP BOLT 20 (+/- 4) + 80 deg (+/- 3 deg)
OUTER MAIN BEARING CAP BOLT 20 (+/- 4) + 51 deg (+/- 3 deg)
MAIN BEARING CAP SIDE BOLT 25 +/- 4
CRANK SENSOR BOLT 25 +/- 4
CONNECTING ROD BOLT 20 (+/- 3) + 110o (+/- 3 deg)
TIMING CHAIN DAMPER BOLT 25 +/- 4
CAM SPROCKET BOLT 30 +/- 4
OIL PUMP BOLT - PRECONDITION 15 +/- 3
OIL PUMP BOLT 25 +/- 4
FRONT COVER BOLT - PRECONDITION 15 +/- 3
FRONT COVER BOLT - FINAL 30 +/- 4
REAR SEAL HOUSING BOLT - PRECONDITION 15 +/- 3
REAR SEAL HOUSING BOLT 30 +/- 4
OIL DEFLECTOR NUT 25 +/- 4
OIL PAN BOLT - M8 - PRECONDITION 15 +/- 3
OIL PAN BOLT - M8 - FINAL 25 +/- 4
OIL PAN BOLT - M6 12 +/- 2
LIFTER/GUIDE ASSEMBLY BOLT 12 +/- 2
VALLEY COVER BOLT 25 +/- 4
ROCKER ARM BOLT 30 +/- 5
VALVE COVER BOLT 12 +/- 2
INTAKE MANIFOLD BOLT 10 +/- 1
OIL PRESSURE SENSOR 35 +/- 5
CYLINDER HEAD BLEED TUBES/PLUGS 12 +/- 2
WATER PUMP BOLT 30 +/- 5
IGNITION COIL BOLT 12 +/- 2
HARMONIC BALANCER BOLT 50 Nm. (+/- 5) + 140 deg (+/- 4 deg)
KNOCK SENSOR BOLT 25 +/- 4
ENGINE MOUNT BRACKET BOLT 50 +/- 10
COOLANT TEMP SENSOR 20 +/- 4
EXHAUST MANIFOLD BOLT - PRECONDITION 14 +/- 2
EXHAUST MANIFOLD BOLT - FINAL 20 +/- 2
TORQUE SPARK PLUG 20 +/- 3
KNOCK SENSOR BOLT 25 +/- 4
ENGINE MOUNT BRACKET BOLT 50 +/- 10
CYLINDER HEAD CORE PLUG 20 +/- 4
EXHAUST MANIFOLD BOLT - PRECONDITION 14 +/- 2
EXHAUST MANIFOLD BOLT - FINAL 20 +/- 2
TORQUE SPARK PLUG 20 +/- 3
EVAP VALVE BOLT 50 +/- 10
LIFT BRACKET BOLT 50 +/- 10
FLYWHEEL BOLTS - FINAL (TORQUE + ANGLE) 30 Nm. + 40 deg
FLYWHEEL BOLTS - PRECONDITION 20 +/- 4
CLUTCH PLATE BOLT - FINAL 70 +/- 7

Last edited by 1coolC2; 05-04-2008 at 06:55 AM.

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05-04-2008, 10:33 AM

USA1-ZO6

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Quote:

Originally Posted by 1coolC2

Thanks Jeff !

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05-10-2008, 11:48 AM

Bigbucks

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Quote:

Originally Posted by 1coolC2

Maybe it's obvious, but I wrote a couple of these numbers down (rocker arm bolt and valve cover bolt), not realizing they are N.m and NOT ft-lbs. Just before I installed the rocker arms, I posted requesting some advice and I happened to mention 30 ft-lbs. And a responder said he used 22 ft-lbs. Then one of the engine builders chimed in saying it was 30 N.m. Any way, just making sure that you realize it is N.m.

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05-10-2008, 02:18 PM

RedGTS

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This may be a little easier to read, and it has both N-m and ft/in lbs:

http://www.davidfarmerstuff.com/C6Z06-Torque.pdf

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05-10-2008, 11:44 PM

USA1-ZO6

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Yes on the N-m and thanks again for all the info!

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05-13-2010, 11:56 PM

triblk6spd

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The Wixom list says rocker arms 30lb/ft and the david farmer list says 22lb/ft? Which is it?

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05-15-2010, 12:34 AM

#10

triblk6spd

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Nobody on this board has torqued down their own rocker arms? I am reinstalling my rockers next week and just want to double check. Thanks all.

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05-15-2010, 01:03 AM

#11

Z06LINK

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yes I torqued mine when I replaced them with my CHE rockers. Checked the Chevy engine manual page 9-1099, "Valve rocker arms 30 N-m or 22 lb ft."

Last edited by Z06LINK; 05-15-2010 at 01:31 AM.

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05-15-2010, 01:19 AM

#12

triblk6spd

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You are the best. Thank you for the help. When it comes to rockers on these cars you can never be TO sure.

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05-15-2010, 09:26 AM

#13

bowtiguy

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I've installed and retorqued my CHE's several times... the man is right 22 ft lbs.

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10-15-2011, 12:40 PM

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erichg1000

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has anybody been able to verify the differences between david farmer torque list and the above "wixom" list? Some are different. For instance spark plugs - 20 n.m on the above list. On the DF list it's 15 n.m

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12-30-2011, 04:55 PM

#15

vvlf

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Quote:

Originally Posted by erichg1000

Not sure what the conversion to n.m.'s are, but the chevy service manual says the spark-plugs are to be torqued to 11 ft-lbs

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12-30-2011, 05:02 PM

#16

erick_e

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St. Jude Donor '13-'14-'15-'16

Quote:

Originally Posted by Z06LINK

yes I torqued mine when I replaced them with my CHE rockers. Checked the Chevy engine manual page 9-1099, "Valve rocker arms 30 N-m or 22 lb ft."

Correct...

Rocker arm bolts are 30Nm or 22ft lbs

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06-28-2021, 12:52 PM

#17

c4love

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LS7 Connecting Rod Bolt Torque Spec ????

Hello All,

I am rebuilding an LS7 Gen IV Aluminum block and connecting rod bolt torque specs are all over the MAP depending where you look.... Anyone have a good GM # or spec?

I have seen 15ft lbs first pass, with 110 degree final angle pass
I have seen 15ft lbs first pass, with 75 degree final angle pass
And Last 15ft lbs first pass, with 85 degree final angle pass

Which should I pick? I would like to get this right the first time kinda important! Not sure why specs are all over the place.
Thanks for any help and suggestions!

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03-05-2022, 03:38 PM

#18

Kowalski12

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Torque spec

Can someone please explain what the + 80 deg (+/- 3 deg) means.

INNER MAIN BEARING CAP BOLT 20 (+/- 4) + 80 deg (+/- 3 deg)
OUTER MAIN BEARING CAP BOLT 20 (+/- 4) + 51 deg (+/- 3 deg)

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03-05-2022, 05:43 PM

#19

c4love

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Means get as close as you can to that number plus or minus.

Your goal is 80 deg +or-

So 81 deg is ok and/or so is 79 in that case. 81 being +1 and 79 being -1

But DONT go over 83 deg or under 77.

Hope that helps.

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