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Head gasket replacement. Help


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Long story short the rear exhaust header bolt snapped off and now it's leaking. It's the driver side and there's absolutely no room to get a 90 degree drill in there and drill it out and tap it. So I'm going to have to remove the head just to drill this damn hole out and tap it. I'm confident I can do this my only concern is how do you adjust non adjustable rocker arms? Do I just take all the rocker arms off and put them back in the exact same spot and torgue them down? I did find a search that said are head bolts are non reusable? So I'm going to order a new head gasket and new header bolts now. Any help on how to do this gasket replacement would be great. Thanks

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its pretty easy. just remove all the rock bolts and factory heap bolts. you can get a single head gasket at you local GM dealership. you can get a single box of fel-pro head bolts at your local napa. thats where I found them the cheapest here in my town. as for the rock bolts you just torque them to 22 foot pounds. the crappiest part is the head bolts are torque to yield. or also called stretch to fit. you need a special gauge to torque them down. you could also do ARP head bolts or studs. if you do it that way you can just torque the ARPs done and not have to worry about the torque to yield crap. its not that bad but more of a hassle than just torquing down the ARPs.

Edited by shawnss (see edit history)
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Great thanks man. I just ordered a head gasket from koons chevy and head bolts from jegs. I also got a set of intake bolts Also. You wouldn't happen to know the specs on the head bolts and the intake bolts do you? Torque specs that is?

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Great thanks man. I just ordered a head gasket from koons chevy and head bolts from jegs. I also got a set of intake bolts Also. You wouldn't happen to know the specs on the head bolts and the intake bolts do you? Torque specs that is?

um not right off hand its been so long sense I have used the factory bolts. but ill check for ya I have a book

 

here ya go for a lq9 intake

 

First Pass in Sequence 5 Nm (44 inch lbs.)

Final Pass in Sequence 10 Nm (89 inch lbs.)

Intake Manifold Sight Shield Bolt (RPO LQ9 - 6.0L Engine) 9 Nm (80 inch lbs.)

IMAGE017.jpg
Edited by shawnss (see edit history)
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here you go I just copied this off PT.net this was not me but another member.

 

 

 

 

 

Accelerator Control Cable Bracket Bolts 89 lb in
Air Conditioning Compressor Bolts 37 lb ft
Air Conditioning Compressor Bracket Bolts 37 lb ft
Air Conditioning Idler Pulley Bolt 37 lb ft
Air Conditioning Tensioner Bolt 18 lb ft
Air Injection Reaction (AIR) Pipe-to-Exhaust Manifold Bolts 15 lb ft
Camshaft Retainer Bolts 18 lb ft
Camshaft Sensor Bolt 18 lb ft
Camshaft Sprocket Bolts 26 lb ft
Catalytic Converter Nut 18 lb ft
Connecting Rod Bolts - First Design (First Pass) 15 lb ft
Connecting Rod Bolts - First Design (Final Pass) 60 degrees
Connecting Rod Bolts - Second Design (First Pass) 15 lb ft
Connecting Rod Bolts - Second Design (Final Pass) 75 degrees
Coolant Temperature Gauge Sensor 15 lb ft
Crankshaft Balancer Bolt (Installation Pass-to Ensure the Balancer is Completely Installed) 240 lb ft
Crankshaft Balancer Bolt (First Pass-Install a NEW Bolt After the Installation Pass and Tighten as Described in the First and Final Passes) 37 lb ft
Crankshaft Balancer Bolt (Final Pass) 140 degrees
Crankshaft Bearing Cap Bolts (Inner Bolts-First Pass in Sequence) 15 lb ft
Crankshaft Bearing Cap Bolts (Inner Bolts-Final Pass in Sequence) 80 degrees
Crankshaft Bearing Cap Side Bolts 18 lb ft
Crankshaft Bearing Cap Studs (Outer Studs-First Pass in Sequence) 15 lb ft
Crankshaft Bearing Cap Studs (Outer Studs-Final Pass in Sequence) 53 degrees
Crankshaft Oil Deflector Nuts 18 lb ft
Crankshaft Position Sensor Bolt 18 lb ft
Cylinder Head Bolts (First Pass all M11 Bolts in Sequence) 22 lb ft
Cylinder Head Bolts (Second Pass all M11 Bolts in Sequence) 90 degrees
Cylinder Head Bolts (Final Pass all M11 Bolts in Sequence-Excluding the Medium Length Bolts at the Front and Rear of Each Cylinder Head) 90 degrees
Cylinder Head Bolts (Final Pass M11 Medium Length Bolts at the Front and Rear of Each Cylinder Head in Sequence) 50 degrees
Cylinder Head Bolts (M8 Inner Bolts in Sequence) 22 lb ft
Cylinder Head Coolant Plug 15 lb ft
Cylinder Head Core Hole Plug 15 lb ft
Drive Belt Idler Pulley Bolt 37 lb ft
Drive Belt Tensioner Bolts 37 lb ft
Engine Block Coolant Drain Plugs 44 lb ft
Engine Block Heater 30 lb ft
Engine Block Oil Gallery Plugs 44 lb ft
Engine Coolant Air Bleed Pipe Bolts and Studs 106 lb in
Engine Crossmember Bolts (Large) 107 lb ft
Engine Crossmember Bolts (Small) 92 lb ft
Engine Flywheel Bolts (First Pass) 15 lb ft
Engine Flywheel Bolts (Second Pass) 37 lb ft
Engine Flywheel Bolts (Final Pass) 74 lb ft
Engine Flywheel-to-Torque Converter Bolts 44 lb ft
Engine Front Cover Bolts 18 lb ft
Engine Mount Heat Shield Nuts 89 lb in
Engine Mount Stud-to-Engine Block 37 lb ft
Engine Mount Through Bolts 70 lb ft
Engine Mount Through Bolt Nuts 59 lb ft
Engine Mount-to-Engine Block Bolts 37 lb ft
Engine Rear Cover Bolts 18 lb ft
Engine Service Lift Bracket M10 Bolts 37 lb ft
Engine Service Lift Bracket M8 Bolt 18 lb ft
Engine Valley Cover Bolts 18 lb ft
Engine Wire Harness Clip Bolt 37 lb ft
Engine Wire Harness Ground Strap Bolt 37 lb ft
Exhaust Gas Recirculation (EGR) Valve Bolts (First Pass) 89 lb in
EGR Valve Bolts (Final Pass) 22 lb ft
EGR Valve Pipe-to-Cylinder Head Bolts 37 lb ft
EGR Valve Pipe-to-Exhaust Manifold Bolts 22 lb ft
EGR Valve Pipe-to-Intake Manifold Bolt 89 lb in
Exhaust Manifold Bolts (First Pass) 11 lb ft
Exhaust Manifold Bolts (Final Pass) 18 lb ft
Exhaust Manifold Heat Shield Bolts 80 lb in
Exhaust Manifold Pipe Nuts 26 lb ft
Front Shock-to-Engine Crossmember Bolts 48 lb ft
Fuel Injection Fuel Rail Bolts 89 lb in
Generator Bracket Bolts 37 lb ft
Generator Rear Bracket-to-Engine Block Bolt 18 lb ft
Generator Rear Bracket-to-Generator Bolt 18 lb ft
Ground Strap Bolt (at Rear of Cylinder Head) 37 lb ft
Ignition Coil-to-Bracket Bolts 106 lb in
Ignition Coil Bracket-to-Valve Rocker Arm Cover Bolts 106 lb in
Intake Manifold Bolts (First Pass in Sequence) 44 lb in
Intake Manifold Bolts (Final Pass in Sequence) 89 lb in
Knock Sensors 15 lb ft
Oil Filter 22 lb ft
Oil Filter Fitting 40 lb ft
Oil Level Indicator Tube Bolt 18 lb ft
Oil Level Sensor 115 lb in
Oil Pan Baffle Bolts 106 lb in
Oil Pan Closeout Cover Bolt (Left Side) 106 lb in
Oil Pan Closeout Cover Bolt (Right Side) 106 lb in
Oil Pan Cover Bolts 106 lb in
Oil Pan Drain Plug 18 lb ft
Oil Pan M8 Bolts (Oil Pan-to-Engine Block and Oil Pan-to-Front Cover) 18 lb ft
Oil Pan M6 Bolts (Oil Pan-to-Rear Cover) 106 lb in
Oil Pressure Sensor 15 lb ft
Oil Pump-to-Engine Block Bolts 18 lb ft
Oil Pump Cover Bolts 106 lb in
Oil Pump Relief Valve Plug 106 lb in
Oil Pump Screen Nuts 18 lb ft
Oil Pump Screen-to-Oil Pump Bolt 106 lb in
Oxygen Sensor 31 lb ft
Positive Crankcase Ventilation (PCV) System Strap Nut (at Right Front Vapor Vent Pipe Stud) 106 lb in
Power Steering Pump Bolts 18 lb ft
Power Steering Pump Bracket Bolts 18 lb ft
Spark Plugs (Cylinder Heads-New) 15 lb ft
Spark Plugs (all Subsequent Installations) 11 lb ft
Throttle Body Bolts 106 lb in
Transmission Housing Bolt 37 lb ft
Valve Lifter Guide Bolts 106 lb in
Valve Rocker Arm Bolts 22 lb ft
Valve Rocker Arm Cover Bolts 106 lb in
Water Inlet Housing Bolts 11 lb ft
Water Pump Bolts (First Pass) 11 lb ft
Water Pump Bolts (Final Pass) 22 lb ft
Water Pump Cover Bolts 11 lb ft


4L60-E Transmission Torque Specs
Application
Spec
Accumulator Cover to Case Bolt 6-10 lb ft
Case Extension to Case Bolt 31-35 lb ft
Case Extension to Case Bolt (4WD Shipping) 8.3-16.7 lb ft
Converter Cover Bolt 89 lb in
Converter Housing to Case Screw 48-55 lb ft
Cooler Pipe Connector 26-30 lb ft
Detent Spring to Valve Body Bolt 15-20 lb ft
Floorshift Control Bolt 89 lb in
Flywheel to Torque Converter Bolt 46 lb ft
Forward Accumulator Cover to Valve Body Bolt 6-10 lb ft
Heat Shield to Transmission Bolt 13 lb ft
Line Pressure Plug 6-10 lb ft
Manual Shaft to Inside Detent Lever Nut 20-25 lb ft
Negative Battery Cable Bolt 11 lb ft
Oil Level Indicator Bolt 35 lb ft
Oil Pan to Transmission Case Bolt 97 lb in
Oil Passage Cover to Case Bolt 6-10 lb ft
Park Brake Bracket to Case Bolt 20-25 lb ft
Park/Neutral Position Switch Screw 27 lb in
Plate to Case Bolt (Shipping) 20-25 lb ft
Plate to Converter Bolt (Shipping) 20-25 lb ft
Plug Assembly, Automatic Transmission Oil Pan (C/K) 22.1-29.5 lb ft
Plug Assembly, Automatic Transmission Oil Pan (Y) 20.7-23.6 lb ft
Pressure Control Solenoid Bracket to Valve Body Bolt 6-10 lb ft
Pump Assembly to Case Bolt 19-24 lb ft
Pump Cover to Pump Body Bolt 15-20 lb ft
Shift Cable Grommet Screw 15 lb in
Shift Control Cable Attachment 15 lb ft
Speed Sensor Retainer Bolt 7.7-10 lb ft
Stud, Automatic Transmission Case Extension (Y-car) 13-16 lb ft
TCC Solenoid Assembly to Case Bolt 6-10 lb ft
Trans Mount to Transmission Bolt 18 lb ft
Transmission Fluid Pressure Manual Valve Position Switch to Valve Body Bolt 6-10 lb ft
Transmission Oil Cooler Pipe Fitting 26-30 lb ft
Transmission Oil Pan to Case Bolt 7-10 lb ft
Transmission to Engine Bolt 35 lb ft
Valve Body to Case Bolt 6-10 lb ft


T-56 Transmission Torque Specs
Application
Spec
Backup Lamp Switch 20 lb ft
Clutch Actuator Cylinder Bolt 71 lb in
Clutch Housing Bolt 37 lb ft
Control Lever Handle Bolt 18 lb ft
Gear Select/Skip Shift Solenoid 30 lb ft
Reverse Lockout Assembly Bolt 13 lb ft
Reverse Lockout Solenoid 30 lb ft
Shift Control Bolt 13 lb ft
Shift Control Closeout Boot Bolt 18 lb in
Shift Control Knob 27 lb ft
Transmission Bolt 37 lb ft
Transmission Drain/Fill Plug 20 lb ft
Transmission Mount Bolt 38 lb ft
Transmission Mount Nut 77 lb ft
Transmission Support Bolt 66 lb ft
Vehicle Speed Sensor Bolt 89 lb in


Clutch Torque Specs
Application
Spec
Brake Pedal Pivot Nut 40 lb ft
Clutch Actuator Cylinder Bolt 71 lb in
Clutch Pressure Plate Bolt (5-Speed) 15 lb ft + 45 degrees
Clutch Pressure Plate Bolt (6-Speed) 52 lb ft
Clutch Master Cylinder Nut 15 lb ft
Transmission Bolt (5-Speed) 55 lb in
Transmission Bolt (6-Speed) 37 lb ft
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Ok great thanks and I actually ordered all arp bolts. So I just have to torque them and be done. Thanks for checking

Oh ok never mind then that works. there should be a card in there to tell ya. sorry I thought you were talking about the torque to yields.

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That list needs to be stickied!!! Ohh btw the same thing happened to my truck, same bolt. Only my header bolts kept walking out so a little bit of blue lock tight and 30 ft lbs and its been a week so far with no leaking or walking. I never did anything to the broken bolt just left it alone. Wasn't worth the hassle if I could get it to not leak. Someone might bash me for the lock tight but iV used it on hundreds of jetski and street bike motors with zero issues

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Well I started at at 9 am this morning and just got done lol. What a long day! Anyway took the intake off and the driver side cylinder head just to drill and tap the rear exhaust header bolt. Almost don't seem worth it lol but it needed it bad. New head gasket arp bolts and intake gaskets. Torqued everything down to specs and cranked the key my baby fired right up thank got I never been so nervous in my life lol. Anyway thanks to all you guys for all the info regarding this process.

 

Thanks again guys!

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