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LS Torque Specs
LS Torque Specs
Below are the stock bolt torque specs for LS based engines. If you are running Point One or ARP bolts, follow their published specs instead.
Reading the chart: values in red are inch-pounds (in-lb), not foot-pounds. A valve cover pulled to 106 ft-lb instead of 106 in-lb is a cracked cover. Watch the unit.
Short Block & Rotating Assembly
| Fastener | 1st Pass | 2nd Pass | 3rd Pass |
|---|---|---|---|
| Main Cap Bolts – Inner | 15 ft-lb | +80° | -- |
| Main Cap Bolts – Outer | 18 ft-lb | +51° | -- |
| Main Cap Bolts – M8 Side (after inner/outer) | 18 ft-lb | -- | -- |
| Connecting Rod Bolts – Gen 3 Non-Floating Pin | 15 ft-lb | +60° | -- |
| Connecting Rod Bolts – Gen 4 Floating Pin | 15 ft-lb | +70° | -- |
| Crankshaft Windage Tray Nuts | 18 ft-lb | -- | -- |
| Harmonic Balancer Bolt | 37 ft-lb | +140° | -- |
| Flywheel Bolts | 15 ft-lb | 37 ft-lb | 74 ft-lb |
Cylinder Heads
| Fastener | 1st Pass | 2nd Pass | 3rd Pass |
|---|---|---|---|
| Head Bolts – Gen 3 – All M11 (1st & 2nd pass) | 22 ft-lb | +90° | -- |
| Head Bolts – Gen 3 – 8 Longer M11 (3rd pass) | -- | -- | +90° |
| Head Bolts – Gen 3 – 2 Shorter M11 (3rd pass) | -- | -- | +50° |
| Head Bolts – Gen 3 – M8 (after all 3 M11 passes) | 22 ft-lb | -- | -- |
| Head Bolts – Gen 4 – M11 | 22 ft-lb | +90° | +70° |
| Head Bolts – Gen 4 – M8 (after all 3 M11 passes) | -- | 22 ft-lb | -- |
| Rocker Arm Bolts | 22 ft-lb | -- | -- |
| Valve Cover Bolts | 106 in-lb | -- | -- |
Reusing TTY head bolts is a gamble. Fresh hardware holds the clamp load these numbers assume. Shop LS head bolt kits (short/long for 97-03, equal-length for 2004-up), or step up to Point One head bolts and studs for a boosted or high-load build.
Camshaft & Timing
| Fastener | 1st Pass | 2nd Pass | 3rd Pass |
|---|---|---|---|
| Camshaft Retainer Bolts | 18 ft-lb | -- | -- |
| Camshaft Sprocket Bolts – 3-Bolt Non-VVT | 26 ft-lb | -- | -- |
| Camshaft Sprocket Bolt – Single Bolt VVT | 48 ft-lb | +90° | -- |
| Crankshaft Position Sensor Bolt | 18 ft-lb | -- | -- |
| Front Cover Bolts | -- | 18 ft-lb | -- |
| Rear Cover Bolts | 18 ft-lb | -- | -- |
Induction & Exhaust
| Fastener | 1st Pass | 2nd Pass | 3rd Pass |
|---|---|---|---|
| Intake Manifold Bolts | 44 in-lb | 89 in-lb | -- |
| Throttle Body | 89 in-lb | -- | -- |
| Exhaust Manifold Bolts | 11 ft-lb | 18 ft-lb | -- |
Oil System, Mounts & Accessories
| Fastener | 1st Pass | 2nd Pass | 3rd Pass |
|---|---|---|---|
| Oil Pan Bolts – M6 | 106 in-lb | -- | -- |
| Oil Pan Bolts – M8 | 18 ft-lb | -- | -- |
| Oil Drain Plug | 18 ft-lb | -- | -- |
| Valley Cover | 18 ft-lb | -- | -- |
| Water Pump | 22 ft-lb | -- | -- |
| Motor Mount to Block | 37 ft-lb | -- | -- |
| Accessory Bracket to Block or Head – M10 | 37 ft-lb | -- | -- |
| Alternator Bolts | 37 ft-lb | -- | -- |
Swapping the engine into something it never came in? The Billet LS Swap Motor Mount Kit bolts to the block at the spec above and gives you a solid mounting point in almost any chassis.
Torque Sequences
Follow the numbered order for cylinder head, main cap, and intake manifold bolts. Work from the center out, in the sequence shown.
What this means to you
This guide answers the common torque questions in one place. No more sending her home with "two ugga dugga's." These engines make big power on stock bottom ends, and the small stuff is what keeps them together. Get the number right, watch the units, and replace your TTY bolts.
Boring or honing a block?
Torquing a block is one job. Machining one is another. Our LS/LT Torque Plate simulates head-bolt clamping load so your cylinders are bored and honed round under real stress. Fits Gen 3, 4, and 5 (LT). Made in Wichita from 6061-T6 billet.
Need the hardware? Shop LS Bolt Kits
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