Ls7 Bolt Torque Specs

USA1-ZO6 · 05-04-2008, 02:34 AM

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

vetteship · 05-04-2008, 02:50 AM

Which bolt ?

toxin440 · 05-04-2008, 03:50 AM

Quote:

Originally Posted by vetteship

Which bolt ?

you mean there is more then one?

1coolC2 · 05-04-2008, 07:50 AM

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

USA1-ZO6 · 05-04-2008, 11:33 AM

Quote:

Originally Posted by 1coolC2

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

Thanks Jeff !

Bigbucks · 05-10-2008, 12:48 PM

Quote:

Originally Posted by 1coolC2

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

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.

RedGTS · 05-10-2008, 03:18 PM

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

USA1-ZO6 · 05-11-2008, 12:44 AM

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

triblk6spd · 05-14-2010, 12:56 AM

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

triblk6spd · 05-15-2010, 01:34 AM

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.

Z06LINK · 05-15-2010, 02:03 AM

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."

triblk6spd · 05-15-2010, 02:19 AM

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

bowtiguy · 05-15-2010, 10:26 AM

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

erichg1000 · 10-15-2011, 01:40 PM

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

vvlf · 12-30-2011, 05:55 PM

Quote:

Originally Posted by erichg1000

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

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

erick_e · 12-30-2011, 06:02 PM

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