Mopar Muscle Association UK

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

Will be very useful for the next build.

torque converter bolts 270lbs that cant be right surely?

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.

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

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?

Yes, if you have it....

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?

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.

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.

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.