DeSoto Firesweep I 4-Door Sedan 5.3 V8 (245 Hp) PowerFlite


Overall Rating

7.1 / 10
Safety N/A / 5
Not Rated
Engine 4.0 / 5
Value 3.5 / 5
Performance 3.5 / 5
Comfort 4.0 / 5
People\'s Opinion N/A / 5
Not Rated

DeSoto Firesweep:

The DeSoto Firesweep is an automobile that was produced by DeSoto from 1957 through 1959.
The Firesweep was a lower-priced entry that combined a Dodge shell and chassis with a DeSoto bumper and grill. 1957 models were sold only as imports in Canada. While the Firesweep featured DeSoto's signature tailfins, the front clip was based on the Dodge Coronet. The most telling feature was the headlight design, housed under heavily chromed lids typical of Dodge. Firesweep grilles were similar to those on other contemporary DeSoto models....(Read more on Wikipedia)

I 4-Door Sedan Overview:

DeSoto Firesweep (I 4-Door Sedan). With 434 Nm of torque, it offers ample pulling power. Rear‑wheel drive offers dynamic handling and sporty feedback. A four-door car with a separate trunk, ideal for families and daily commuting. With seating for 6, it’s perfect for larger families.

5.3 V8 (245 Hp) PowerFlite Verdict:

Rating 4 stars

Performance Verdict

Paired with the PowerFlite 2-speed automatic, this V8 offered relaxed and effortless driving, prioritizing smoothness over outright acceleration compared to the manual.

Fuel Economy

Fuel economy was likely similar to the manual, possibly slightly worse in certain conditions due to the older automatic transmission design.

Best Use Case: Comfortable city driving, relaxed highway cruising

Pros and Cons:

Pros:

  • • Classic American styling and presence
  • • Smooth and powerful V8 engine for its time
  • • Spacious and comfortable interior for six passengers
  • • Relatively robust mechanicals for the era

Cons:

  • • Poor fuel economy by modern standards
  • • Lack of modern safety features
  • • Large turning circle and handling characteristics typical of the era
  • • Maintenance can be challenging due to age and parts availability

Specifications:

General:
Brand:DeSoto
Model:Firesweep
Generation:I 4-Door Sedan
Modification (Engine):5.3 V8 (245 Hp) PowerFlite
Start of production:1956
End of production:1957
Powertrain Architecture:Internal Combustion engine
Body type:Sedan
Seats:6
Doors:4
Engine:
Power:245 Hp @ 4400 rpm.
Power per litre:46 Hp/l
Torque:434 Nm @ 2400 rpm.
Engine Model/Code:S27
Engine displacement:5326
Number of cylinders:8
Engine configuration:V-engine
Number of valves per cylinder:2
Fuel injection system:Carburettor
Engine aspiration:Naturally aspirated engine
Valvetrain:OHV
Engine oil capacity:4.7 l
Coolant:19.9 l
Cylinder Bore:93.73 mm mm
Piston Stroke:96.52 mm mm
Compression ratio:8.5:1
Performance:
Fuel Type:Petrol (Gasoline)
Space:
Fuel tank capacity:76 l
Size:
Ramp-over (brakeover) angle:10.2°
Length:5481 mm mm
Width:1986 mm mm
Height:1440 mm mm
Wheelbase:3099 mm mm
Front track:1547 mm
Rear (Back) track:1516 mm
Front overhang:925 mm
Rear overhang:1458 mm
Ride height (ground clearance):137 mm
Minimum turning circle (turning diameter):13.1 m
Approach angle:18.9°
Departure angle:12.9°
Powertrain:
Drivetrain ArchitectureThe Internal combustion engine (ICE) drives the rear wheels of the vehicle.
Drive wheelRear wheel drive
Number of gears2
Transmission typeAutomatic
Gearbox typePowerFlite
Steering typeWorm-reduction unit
Front suspensionIndependent coil spring
Rear suspensionLeaf spring

Behind the wheel of the DeSoto Firesweep. How does it handle on the road?