Dodge Magnum Torque Specs

Here are some specifications for the Magnum engine that we commonly look up:

When using aftermarket ARP fasteners, use ARP’s recommendations over these.

Firing Order: 1-8-4-3-6-5-7-2

Bore/Stroke: 4.00”/3.58”
Pushrod Length (stock):6.915
5.9 stock piston dish volume:6.8cc
5.2 -no dish

Torque specs:
Intake manifold (Magnum pattern with carbureted intake):
Step 1: 16 ft-lbs.
Step 2: 23-25 ft-lbs.

Intake Manifold (LA):
Step 1: 15 ft-lbs.
Step 2: 35 ft-lbs.

Cylinder head bolts (note, if using ARP bolts/studs use the ARP specifications):
Step 1: 50 ft-lb
Step 2: 105 ft-lb

Harmonic Balancer bolt:
180 ft-lb. (Chrysler spec)
130 ft-lb. (what we use, your mileage may vary)

Cam Sprocket bolt:
50 ft-lbs.
40 ft-lbs. (what we use after snapping a bolt at 50 ft-lbs. We also put a touch of loc-tite on the threads – again, your own risk)

Flexplate bolts:
55 ft-lbs.

Water Pump/Timing Cover bolts:
30 ft-lbs.

Converter bolts:
270 in-lbs. NOT ft-lbs.

Oil Pump bolts:
30 ft-lbs. (Chrysler)
It is often difficult to get to the bolts with a torque wrench. When this happens it is best to snug the bolts but not to go overboard. The pump body is cast, and will crack if you get too crazy.

Oil Pan bolts:
215 in-lbs.
Note: It is more important to use the correct pattern than it is to get the exact Newton Meter reading.

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