Engine Fastener Torque Specs
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SBC
7/16 in. outer main cap bolt 65 ft.-lbs.
7/16 in. inner main cap bolt 70 ft.-lbs.
3/8 in. outer main cap bolt 40 ft.-lbs.
11/32 in. connecting rod bolt 38-44 ft.-lbs.
3/8 in. connecting rod bolt 40-45 ft.-lbs.
Cylinder head bolts 65 ft.-lbs.
Screw-in rocker arm studs 50 ft.-lbs.
Intake manifold bolts (cast iron heads) 30 ft.-lbs.
Oil pump bolt 60-70 ft.-lbs.
Cam sprocket bolts 18-20 ft.-lbs.
Harmonic damper bolt 60 ft.-lbs.
Flywheel/Flexplate bolts 65 ft.-lbs.
Pressure plate bolts 35 ft.-lbs.
Bell housing bolts 25 ft.-lbs.
Exhaust manifold bolts 25 ft.-lbs.
BBC
Main cap bolt, 396-427 2-bolt 95 ft.-lbs.
Main cap bolt, 396-454 4-bolt (inner/outer) 110 ft.-lbs.
3/8 in. connecting rod bolt 50 ft.-lbs.
7/16 in. connecting rod bolt 67-73 ft.-lbs.
Cylinder head bolts, long 75 ft.-lbs.
Cylinder head bolts, short 65-68 ft.-lbs.
Screw-in rocker arm studs 50 ft.-lbs.
Intake manifold bolts (cast iron head) 25 ft.-lbs.
Oil pump bolt 65 ft.-lbs.
Cam sprocket bolts 20 ft.-lbs.
Harmonic damper bolt 85 ft.-lbs.
Flywheel/Flexplate bolts 60 ft.-lbs.
Pressure plate bolts 35 ft.-lbs.
Bell housing bolts 25 ft.-lbs.
Exhaust manifold bolts 20 ft.-lbs.
LS1
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
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--------------------------------------------------------------------------------
SBC
7/16 in. outer main cap bolt 65 ft.-lbs.
7/16 in. inner main cap bolt 70 ft.-lbs.
3/8 in. outer main cap bolt 40 ft.-lbs.
11/32 in. connecting rod bolt 38-44 ft.-lbs.
3/8 in. connecting rod bolt 40-45 ft.-lbs.
Cylinder head bolts 65 ft.-lbs.
Screw-in rocker arm studs 50 ft.-lbs.
Intake manifold bolts (cast iron heads) 30 ft.-lbs.
Oil pump bolt 60-70 ft.-lbs.
Cam sprocket bolts 18-20 ft.-lbs.
Harmonic damper bolt 60 ft.-lbs.
Flywheel/Flexplate bolts 65 ft.-lbs.
Pressure plate bolts 35 ft.-lbs.
Bell housing bolts 25 ft.-lbs.
Exhaust manifold bolts 25 ft.-lbs.
BBC
Main cap bolt, 396-427 2-bolt 95 ft.-lbs.
Main cap bolt, 396-454 4-bolt (inner/outer) 110 ft.-lbs.
3/8 in. connecting rod bolt 50 ft.-lbs.
7/16 in. connecting rod bolt 67-73 ft.-lbs.
Cylinder head bolts, long 75 ft.-lbs.
Cylinder head bolts, short 65-68 ft.-lbs.
Screw-in rocker arm studs 50 ft.-lbs.
Intake manifold bolts (cast iron head) 25 ft.-lbs.
Oil pump bolt 65 ft.-lbs.
Cam sprocket bolts 20 ft.-lbs.
Harmonic damper bolt 85 ft.-lbs.
Flywheel/Flexplate bolts 60 ft.-lbs.
Pressure plate bolts 35 ft.-lbs.
Bell housing bolts 25 ft.-lbs.
Exhaust manifold bolts 20 ft.-lbs.
LS1
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
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