Item Description
ConfigurationLongitudinally mounted,
90-degree V8, cast-iron cylinder
block and cast aluminum
cylinder heads
Bore x Stroke90.2 x 90.0 mm (3.55 x 3.54 in)
Displacement4601 cc/280 cid
Compression ratio8.5:1
Horsepower290 kW @ 6000 rpm (390 HP @
6000 rpm)
Torque528 Nm @ 3500 rpm (390 lb.-ft.
@ 3500 rpm)
Redline6500 rpm (fuel shut-off at 6550
rpm)
Specific output84.8 HP per liter
ValvetrainDual overhead chain-driven
cams, roller finger followers
with hydraulic lash adjustment,
ovate-wire valve springs, four
valves per cylinder
Fuel systemSequential electronic fuel
injection
Mass air sensor90 mm (3.54 in) diameter
Throttle bodyTwin 57 mm (2.24 in) diameter
bore-simultaneously open
PistonsForged aluminum
CrankshaftForged steel
Connecting rodsManley Performance Forged
steel H-beam
SuperchargerEaton model 110, Roots-type
Exhaust manifoldsCast high-silicon, molybdenum
iron
Exhaust systemDual stainless steel
2004 Mustang(mus)
Supplement
USA English(fus)
Engine/Transmission
8
Fluid Ford Part Name Capacity
Transmission
fluid
3Refer to the label on your
transmission3.9L
(8.2 pints)4
Windshield
washer fluidUltra-Clear Windshield
Washer Concentrate3.8L
(4.0 quarts)
1Add the coolant type originally equipped in your vehicle.2Rear axle lubricants do not need to be checked or
changed unless a leak is suspected, service is required or
the axle assembly has been submerged in water. The axle
lubricant should be changed any time the rear axle has
been submerged in water. Fill 6 mm to 14 mm (1/4 inch to
9/16 inch) below bottom of fill hole. Add 118 ml (4 oz.) of
Additive Friction Modifier C8AZ-19B546-A or equivalent
meeting Ford specification EST-M2C118–A for complete
refill of Traction-Lok axles.
3The TTC T56 6–Speed transmission on your SVT
Mustang Cobra uses automatic transmission fluid. Ensure
the correct automatic transmission fluid is used as
indicated in the label on your transmission.
4Service refill capacity is determined by filling the
transmission to the bottom of the filler hole with the
vehicle on a level surface.
OCTANE RECOMMENDATIONS
Your vehicle is designed
to use“Premium”
unleaded gasoline with
an (R+M)/2 octane rating
of 91 or higher for optimum performance. The use of
gasolines with lower octane ratings may degrade
performance. We do not recommend the use of
gasolines labeled as“Premium”in high altitude areas
that are sold with octane ratings of less than 91.
If your engine knocks under most driving conditions
while you are using fuel with the recommended
octane rating, see your dealer or a qualified service
technician to prevent any engine damage.
CHECKING ENGINE COOLANT
The concentration and level of engine coolant should
be checked at the mileage intervals listed in the
91(R+M)/2 METHOD
2004 Mustang(mus)
Supplement
USA English(fus)
Maintenance
14
