torque specs for comon v8s



torque specs for comon v8s

Postby paul » October 6th, 2008, 10:46 am

http://www.summitracing.com/tech/charts ... rtrq_p.htm

http://www.hotrodshack.com/torque_settings.htm

http://boxwrench.net/specs/chevy_sb.htm

http://www.boxwrench.net/specs/chevy_bb.htm

http://www.boxwrench.net/specs_index.htm

http://www.scatcrankshafts.com/

http://www.boxwrench.net/specs/pont_265-455.htm

CHEVY TORQUE VALUES
(LS1 AT BOTTOM OF PAGE)

Small Chevy

Fastener Type Torque Spec

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.



TPI Torque Specifications

Below are the torque specifications as designated by GM for Tuned Port Injection intakes. Please note that some specifications are in lb. ft., and some are in lb. in.

Manifold to Runner Bolts 25 lb. ft.
Runner to Manifold Bolts 25 lb. ft.
Fuel Rail Attaching Bolts 15 lb. ft.
Throttle Body Attaching Bolts 18 lb. ft.
Throttle Position Sensor 18 lb. in.
Idle Air Control Valve 13 lb. ft.
Throttle Body Coolant Plate 27 lb. in.
Throttle Body Cover Plate 30 lb. in.
Power Brake Vacuum Fitting 108 lb. in.
Fuel Line Nuts 20 lb. ft.
Fuel Tube Bracket Bolt 25 lb. ft.
Fuel Pressure Connection 115 lb. in.
Pressure Regulator Base to Rail 44 lb. in.
Pressure Regulator Bracket 44 lb. in.
Outlet Tube to R/H Rail Retainer 44 lb. in.


Big Chevy

Fastener Type Torque Specs

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.


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Mopar Torque Values


HEMI426

Fastener Type Torque Spec

Main cap bolts 100 ft.-lbs.
Main cap tie bolts 45 ft.-lbs.
Connecting rod bolts (7/16 in.) 75 ft.-lbs.
Cylinder head bolts (iron head) 70-75 ft.-lbs.*
Cylinder head bolts (aluminum head) 65-70 ft.-lbs.*
Camshaft cap screw (Street Hemi) 40 ft.-lbs.
Camshaft cap screw (Race Hemi) 75 ft.-lbs.
Rocker shaft bracket bolts 30 ft.-lbs. max
Harmonic damper bolt 135 ft.-lbs.
Flexplate bolts 70 ft.-lbs.
Torque converter to flexplate bolts 65 ft.-lbs.
Flywheel cap screws 70 ft.-lbs.
Clutch cover to flywheel bolts 30 ft.-lbs.

* follow factory torque sequence

BIG CHRYSLER383, 400, 440 B/RB Engines

Fastener Type Torque Specs

Main cap bolts 85 ft.-lbs.
Connecting rod bolts (plain) 45 ft.-lbs.
Connecting rod bolts (heavy duty) 50-55 ft.-lbs.
Crankshaft rear bearing seal retainer bolts 30 ft.-lbs.
Cylinder head bolts 70 ft.-lbs.*
Rocker shaft bracket bolts 25 ft.-lbs.
Intake manifold bolts 40 ft.-lbs.
Oil pump cover bolt 10 ft.-lbs.
Oil pump attaching bolt 35 ft.-lbs.
Oil pan bolts 15 ft.-lbs.
Cam locking bolt 35 ft.-lbs.
Harmonic damper bolt 135 ft.-lbs.
Flywheel/flexplate bolts 55 ft.-lbs.
Flywheel housing to engine block bolts 50 ft.-lbs.
Flexplate to torque converter bolts 270 in.-lbs.
Water pump bolts 30 ft.-lbs.
Fuel pump bolt 30 ft.-lbs.
Starter mounting bolts 50 ft.-lbs.
Exhaust manifold nuts 30 ft.-lbs.

* follow factory torque sequence

SMALL CHRYSLER273, 318, 340, 360 A Engine

Fastener Type Torque Spec

Main cap bolts 85 ft.-lbs.
Connecting rod bolts (plain) 45 ft.-lbs.
Cylinder head bolts, 273-318 85 ft.-lbs.*
Cylinder head bolts, 340-360 95 ft.-lbs.*
Rocker shaft bracket bolts 17 ft.-lbs.
Intake manifold bolts 35 ft.-lbs.
Oil pump cover bolt 95 in.-lbs.
Oil pump attaching bolt 35 ft.-lbs.
Oil pan bolts 15 ft.-lbs.
Cam locking bolt 35 ft.-lbs.
Cam thrust plate bolts 210 in.-lbs.
Harmonic damper bolt 135 ft.-lbs.
Flywheel/flexplate bolts 55 ft.-lbs.
Flywheel housing to engine block bolts 50 ft.-lbs.
Flexplate to torque converter bolts 270 in.-lbs.
Clutch housing bolts 30 ft.-lbs.
Front cover bolts 30 ft.-lbs.
Water pump bolts 30 ft.-lbs.

* Follow factory torque sequence




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Ford Torque Values

260, 289, 302

Fastener Type Torque Spec

Main cap bolts 60-70 ft.-lbs.
Outer main cap bolts, 35-40 ft.-lbs.
Connecting rod bolts 19-24 ft.-lbs. (40-45 ft.-lbs. for 289 HP Boss 302)
Cylinder head bolts 65-72 ft.-lbs.
Rocker arms 17-23 ft.-lbs.
Intake manifold bolts 23-25 ft.-lbs.
Oil pump bolt 23-28 ft.-lbs.
Cam bolts 40-45 ft.-lbs.
Cam thrust plate bolts 8-10 ft.-lbs.
Harmonic damper bolts 70-90 ft.-lbs.
Flywheel/flexplate bolts 75-85 ft.-lbs.
Pressure plate bolts 35 ft.-lbs.
Front cover bolts 12-15 ft.-lbs.

351W


Fastener Type Torque Specs

Main cap bolts 95-105 ft.-lbs.
Connecting rod bolts 40-45 ft.-lbs.
Cylinder head bolts 90-100 ft.-lbs.
Rocker arms 17-23 ft.-lbs.
Intake manifold bolts 23-25 ft.-lbs.
Oil pump bolt 23-28 ft.-lbs.
Cam bolts 40-45 ft.-lbs.
Cam thrust plate bolts 8-10 ft.-lbs.
Harmonic damper bolt 70-90 ft.-lbs.
Flywheel/flexplate bolts 75-85 ft.-lbs.
Pressure plate bolts 35 ft.-lbs.
Front cover bolts 12-15 ft.-lbs.

351C, 351M

Fastener Type Torque Spec

Main cap bolts 95-105 ft.-lbs.
Connecting rod bolts 40-45 ft.-lbs. (45-50 ft.-lbs. for Boss 351C)
Cylinder head bolts(follow factory torque sequence) 105 ft.-lbs. (125 ft.-lbs. for Boss 351C)
Rocker arms (non-adjustable) 18-22 ft.-lbs.
5/16 in. intake manifold bolts 21-25 ft.-lbs.
3/8 in. intake manifold bolts 28-33 ft.-lbs.
Oil pump bolt 25 ft.-lbs.
Cam bolts 40-45 ft.-lbs.
Cam thrust plate bolts 9-12 ft.-lbs.
Harmonic damper bolt 70-90 ft.-lbs.
Flywheel/flexplate bolts 75-85 ft.-lbs.
Pressure plate bolts 35 ft.-lbs.
Front cover bolts 12-18 ft.-lbs.

429-460

Fastener Type Torque Spec

Maincap bolts 95-105 ft.-lbs.
Connecting rod bolts 40-45 ft.-lbs.
Cylinder head bolts 140 ft.-lbs.
Rocker arms (non-adjustable) 18-22 ft.-lbs.
Intake manifold bolts 25-30 ft.-lbs.
Oil pump bolt 25 ft.-lbs.
Cam bolts 40-45 ft.-lbs.
Harmonic damper bolt 70-90 ft.-lbs.
Flywheel/flexplate bolts 75-85 ft.-lbs.
Pressure plate bolts 35 ft.-lbs.
Front cover bolts 12-18 ft.-lbs.

360, 390, 406, 427, 428 FE

Fastener Type Torque Spec

Main cap bolts 95-105 ft.-lbs.
Crossbolts for 406 and 427 40 ft.-lbs.
Connecting rod bolts 40-45 ft.-lbs. (53-58 ft.-lbs. for 406 and 427)
Cylinder head bolts 80-90 ft.-lbs. (100-110 ft.-lbs. for 1963-67 427)
Rocker arm shaft bolts 40-45 ft.-lbs.
Intake manifold bolts 32-35 ft.-lbs.
Oil pump bolt 12-15 ft.-lbs.
Cam bolts 40-45 ft.-lbs.
Harmonic damper bolt 70-90 ft.-lbs.
Flywheel/flexplate bolts 75-85 ft.-lbs.
Pressure plate bolts 35 ft.-lbs.
Front cover bolts 12-15 ft.-lbs.




Mopar guys, this is just for you. We've taken all the guesswork out of Mopar torque specs

These specs are for stock-type bolts with light engine oil applied to the threads and the underside of the bolt head. Moly and other lubes offer reduced friction and increased bolt tension, which will affect the torque figure. If you use aftermarket performance bolts like ARP's, you should follow the recommended torque specifications.
Please note that some specifications are in inch-pounds rather than foot-pounds. Read the charts carefully to prevent broken bolts due to excessive torquing.


HEMI
426


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Fastener Type Torque Spec

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Main cap bolts 100 ft.-lbs.
Main cap tie bolts 45 ft.-lbs.
Connecting rod bolts (7/16 in.) 75 ft.-lbs.
Cylinder head bolts (iron head) 70-75 ft.-lbs.*
Cylinder head bolts (aluminum head) 65-70 ft.-lbs.*
Camshaft cap screw (Street Hemi) 40 ft.-lbs.
Camshaft cap screw(Race Hemi) 75 ft.-lbs.
Rocker shaft bracket bolts 30 ft.-lbs. max
Harmonic damper bolt 135 ft.-lbs.
Flexplate bolts 70 ft.-lbs.
Torque converter to flexplate bolts 65 ft.-lbs.
Flywheel cap screws 70 ft.-lbs.
Clutch cover to flywheel bolts 30 ft.-lbs.

* follow factory torque sequence

BIG CHRYSLER
383, 400, 440 B/RB Engines


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Fastener Type Torque Specs

--------------------------------------------------------------------------------

Main cap bolts 85 ft.-lbs.
Connecting rod bolts (plain) 45 ft.-lbs.
Connecting rod bolts (heavy duty) 50-55 ft.-lbs.
Crankshaft rear bearing seal retainer bolts 30 ft.-lbs.
Cylinder head bolts 70 ft.-lbs.*
Rocker shaft bracket bolts 25 ft.-lbs.
Intake manifold bolts 40 ft.-lbs.
Oil pump cover bolt 10 ft.-lbs.
Oil pump attaching bolt 35 ft.-lbs.
Oil pan bolts 15 ft.-lbs.
Cam locking bolt 35 ft.-lbs.
Harmonic damper bolt 135 ft.-lbs.
Flywheel/flexplate bolts 55 ft.-lbs.
Flywheel housing to engine block bolts 50 ft.-lbs.
Flexplate to torque converter bolts 270 in.-lbs.
Water pump bolts 30 ft.-lbs.
Fuel pump bolt 30 ft.-lbs.
Starter mounting bolts 50 ft.-lbs.
Exhaust manifold nuts 30 ft.-lbs.

* follow factory torque sequence

SMALL CHRYSLER
273, 318, 340, 360 A Engine


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Fastener Type Torque Spec

--------------------------------------------------------------------------------

Main cap bolts 85 ft.-lbs.
Connecting rod bolts (plain) 45 ft.-lbs.
Cylinder head bolts, 273-318 85 ft.-lbs.*
Cylinder head bolts, 340-360 95 ft.-lbs.*
Rocker shaft bracket bolts 17 ft.-lbs.
Intake manifold bolts 35 ft.-lbs.
Oil pump cover bolt 95 in.-lbs.
Oil pump attaching bolt 35 ft.-lbs.
Oil pan bolts 15 ft.-lbs.
Cam locking bolt 35 ft.-lbs.
Cam thrust plate bolts 210 in.-lbs.
Harmonic damper bolt 135 ft.-lbs.
Flywheel/flexplate bolts 55 ft.-lbs.
Flywheel housing to engine block bolts 50 ft.-lbs.
Flexplate to torque converter bolts 270 in.-lbs.
Clutch housing bolts 30 ft.-lbs.
Front cover bolts 30 ft.-lbs.
Water pump bolts 30 ft.-lbs.

* Follow factory torque sequence

Engine Fastener Torque Specs
paul

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