BB, SB & Hemi 6 torque settings and bolt sizes.

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Pete
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BB, SB & Hemi 6 torque settings and bolt sizes.

Post by Pete »

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
Pete Wiseman; Cambridge.

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Stu
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Post by Stu »

Will be very useful for the next build. :D :thumbright:
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Post by big block »

torque converter bolts 270lbs that cant be right surely?
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Pete
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Post by Pete »

That'll be inch-pounds.

I do them F-tight but I use the 3/4"headed ones, and then I use LocTite and check them after a couple of runs.
Pete Wiseman; Cambridge.

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Anonymous

Post by Anonymous »

Yea , forget the specs , F-tight it is.

:D
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Dave-R
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Post by Dave-R »

Isn't it easier just to let people print off one of these and then they can stick it on their wall where they work?
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Pete
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Post by Pete »

Yes, if you have it....
Pete Wiseman; Cambridge.

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witorque
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Post by witorque »

The apparently high settings are inch lbs, not lb feet as we are used to....
One would need a torque wrench with an inch lb scale.
I persume you would divide the inch lbs by 12 to give lb feet, but I stand to be corrected?
ChrisWitor
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Dave-R
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Post by Dave-R »

Yes. But some settings are very low on the torque wrench when using lb/ft. And most torque wenches are not that accurate low on the scale.

You can get inch pounds torque wrnches easy enoogh though. They are used a lot on motorcycles although with the metric scale on the same wrench.
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Dave999
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Post by Dave999 »

Hemi 6 australian D series engine

APPLICATION THREAD SIZE TORQUE
AND TYPE Newton metres lb. ft. or lb. Ins.
Alternator adjusting strap bolt 5/16"-18 UNC 20 180 lbs. in.
Alternator adjusting strap mounting bolt 3/8"-16 UNC 40 30 lbs. ft.
Alternator bracket bolt 3/8"-16 UNC 40 30 lbs. ft.
Alternator mounting nut 5/16"-18 UNC 27 240 lbs. in.
Camshaft lock screws 3/8"-16 UNC 40 30 lbs. ft.
Carburettor to manifold bolt (2) 3/8"-16 UNC 27 240 lbs. in.
Carburettor to manifold nuts (4) 5/16"-18 UNC 23 200 lbs. in.
Chain case bolt 1/4"-20 UNC 11 96 lbs. in.
Connecting rod nut (oiled) 3/8"-24 UNF 61 45 lbs. ft.
Cylinder head bolt 7/16"-14 UNC 88 65 lbs. ft.
Cylinder head cover screw 1/4"-20 UNC 5 40 lbs. in.
Distributor clamp bolt 5/16"-18 UNC 23 200 lbs. in.
Engine Crankshaft pulley attachment screws 3/8"-16 UNC 40 30 lbs. ft.
Engine front mounting to block screw 7/16"-14 UNC 68 50 lbs. ft.
Engine front mounting to bracket nut 7/16"-20 UNF 47 35 lbs. ft.
Engine front mounting to frame nut 1/2"-20 UNF 102 75 lbs. ft.
Engine rear mount bolts 7/16"-14 UNC 47 35 lbs. ft.
Exhaust Pipe clamp bolt 3/8"-24 UNF 27 240 lbs. in.
Exhaust Pipe clamp support bolt 3/8"-24 UNF 27 240 lbs. in.
Exhaust Pipe connection nut 7/16"-20 UNF 40 30 lbs. ft.
Fan attaching bolt 5/16"-18 UNC 23 200 lbs. in.
Flywheel housing cover bolt 1/4"-20 UNC 10 85 lbs. in.
Flywheel Housing to block 3/8"-16 UNC 40 30 lbs. ft.
Flywheel housing to cylinder block bolt 7/16"-14 UNC 68 50 lbs. ft.
Flywheel to crankshaft bolt 7/16"-20 UNF 75 55 lbs. ft.
Fuel Pump attaching bolt 3/8"-16 UNC 40 30 lbs. ft.
Intake to exhaust manifold bolt 3/8"-16 UNC 34 25 lbs. ft.
Main bearing cap bolt (oiled) 7/16"-14 UNC 75-80 55-60 lbs. ft.
Manifold Assembly to cylinder head nuts 5/16"-24 UNF 14 120 lbs. in.
Oil Pan bolt 5/16"-18 UNC 26 230 lbs. in.
Oil Pan bolt 1/4"-20 UNC 11 95 lbs. in.
Oil Pan drain plug 1/2"-20 UNF 27 240 lbs. in.
Oil pressure gauge connection 1/8"-27 NPTF 7 60 lbs. in.
Oil Pump attaching bolt 5/16"-18 UNC 23 200 lbs. in.
Oil Pump cover screw 1/4"-20 UNC 3 30 lbs. in.
Oil strainer tube attaching screw 1/4"-20 UNC 3 30 lbs. in.
Rocker arm retaining screw 3/8"-16 UNC 60 45 lbs. ft.
Spark Plug 14 mm- 1.25 mm 31 275 lbs. in.
Starter mounting bolt 7/16"-14 UNC 68 50 lbs. ft.
Tappet chamber cover screws 1/4"-20 UNC 6 50 lbs. in.
Temperature gauge connection 1/4"-18 NPTF 20 180 lbs. in.
Water Pump to housing bolt 3/8"-16 UNC 40 30 lbs. ft.
Water Pump to housing bolt 5/16"-18 UNC 23 205 lbs.
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Anonymous

Post by Anonymous »

pete walton wrote:What about the lash on a roller rocker ?????? Thats the nut at the top with the key not the gap
Manu reccomendations.

Unless you wanna chance the 'f tight' procedure & risk snapping the end of rocker off.

:D :D
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