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1957 Chrysler 300C

Investment Grade 1 of 484 300C Convertible 392 Dual Quad HEMI V8 A488 3 Speed
Stock #
Body Style
392 HEMI V8
Exterior Color
Interior Color

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1957 Chrysler 300C Black For Sale
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  • Correct 392 cubic inch Chrysler Firepower V8 / 375 horsepower
  • 1 of only 484 1957 300C convertibles produced
  • Tan leather interior / Factory 6-way adjustable driver’s seat
  • Original A488 Torqueflite 3-speed automatic transmission
  • Covered in a fresh coat of Jet Black paint
  • Purchased new by actress Valerie Harper
  • 8.75 rear axle
  • 14-inch rims with Goodyear whitewall tires

Wrapping a historic drivetrain in a tailored interior and 18 feet of stylish sheetmetal this 1957 300C Convertible, one of only 484 produced, HAS to be one of the coolest Mopars on the planet. Purchased new by actress Valerie Harper, and spending the next five decades in the warm California sun, it’s a blue chip example of some of the most revered metal Detroit has ever produced. If you’re a hardcore Chrysler collector who’s itching for the ultimate investment grade big fin letter car, this all-American cruiser will have you reminiscing about the late ’50s and great Americana.

Chrysler’s research during wartime and their development work on a new engine for the P-47 Thunderbolt led to the now-famous hemispherical combustion chamber design, or as us car guys like to refer to it as the “Hemi”. However, the 300C was incredible not only because of its power, but it also was loved by many because of its exceptional handling that resulted from a lowered placement of the heavy engine and careful location of the rear leaf springs.

The 300C’s futuristic design helped mark the debut of jet age Detroit styling trends that would continue for several years. And although Chrysler’s aerodynamic ingenuity came in handy at Daytona Beach, where a fire breathing 390 horsepower Hemi propelled the car to 134 MPH, it was the firm’s style quotient that quickly sent the market into a frenzy. At the front of this rag-top’s sculpted body is a bold, ‘yawning’ grille that hangs a red, white and blue “300” emblem between chrome trimmed ‘increased visibility’ headlamps and innovative brake cooling ducts. Below that grille is an original, re-chromed bumper wrapping clear marker light into pristine stainless fender trim; and above that grille, a fresh chrome “CHRYSLER” script combines with a grafted center fin to detail the car’s massive hood. At the sides of the car’s body, rolled fenders flow into smooth fins behind great looking stainless trim and large red, white and blue “300” emblems. Below that trim, dent-free stainless gravel shields protect the fenders from the car’s twist happy tires; and above the trim is stylish chrome mirrors that combine with flush chrome door handles to lend a healthy dose of form and function. At the top of the car, an angled windshield and like-new greenhouse glass ride between a fresh tan top, bright opposing windshield wipers and polished original trim. And at the back of the car, jet-inspired tail lights center a simple chrome tag bracket and an ornate “300” emblem above a second original re-chromed bumper.

With this car’s 392 cubic inch Firepower V8 Chrysler created a big block legend that’s still highly regarded as a revolutionary blend of performance and luxury. Not only does this hot Hemi mill produce 375 horsepower, but it also twists out 9.25 to 1 compression into 420 lb./ft. of torque. Induction is handled by a pair of gold air cleaners that are piped directly into two high performance Carter 4-barrel carburetors. Fire is provided by a high performance points distributor which shoots sparks between a tagged 30 amp generator and fresh black plug wires. Combustion comes courtesy of a high performance camshaft which breathes through a high performance intake and low restriction exhaust manifolds. Aesthetically, the engine’s fresh aluminum paint contrasts well against cool gold valve covers and the car’s glossy Gauquin Red engine bay. And little details like stainless lines, rebuilt horns, a reproduction Mopar red cap battery, a correct Silentflite fan drive and a cool Jiffy Jet washer bag provide tons of exciting eyeball appeal.

Put the 300C on a lift and you’ll see that bolted to the massive HEMI is the original pushbutton A488 Torqueflite 3-speed automatic push button transmission that sends power to the 8 ¾ rear axle. Also underneath you’ll see the torsion bar front suspension bolted to the X-frame chassis and in the rear a leaf spring setup houses the aforementioned rear-axle. Stopping power comes courtesy of a power drum brakes, and in front of those brakes 14” steel rims have been wrapped in BF Goodrich Silvertown Whitewall tires.

Hop inside this handsome Chrysler and you’ll find a spacious and airy driving environment which has enough room to haul the whole family in comfort and style. Tan leather bench seats harbor correct seat cushions which still feel firm to the touch. Black carpet does an excellent job of highlighting the car’s bright stainless accents and correctly cushioned dash. And speaking of the dash, a bright rearview mirror, a red, white and blue “300” emblem, a rare Highway Hi-Fi record player and pushbuttons for the tough Torqueflite transmission frame super cool ‘jet age’ gauges that are centered on a continuous motion clock. At the sides of the seats, fantastic tri-tone door panels display a prominent 50s design theme between correct power windows and cool “300” branded sill plates. Behind the seats, a new convertible cowl snaps down over a giant, fully restored trunk which props a fifth wire wheel and a full-size spare tire next to an echo-prone level of cargo space. And in front of the driver, a gorgeous wide-diameter steering wheel spins an attractive two-tone rim around a deep-seated “300” center piece and a full chrome horn ring.

This ’57 300C Convertible represents a huge milestone in the development of Chrysler Corporation as a powerhouse manufacturer. After tearing up the beaches in Daytona and shattering speed records at the firm’s own Chelsea Proving Grounds, it single-handedly spawned the world-class performance image Chrysler’s eponymous brand enjoyed well into the ‘70s. This car is absolutely one of the best first year letter series convertibles in existence, it represents the pinnacle of American design and manufacturing dominance and it’s the kind of rare investment opportunity that only comes around once in a lifetime. If you’re a discerning gearhead who likes top-notch classics that draw crowds wherever they go, this high performance luxury machine will be a significant addition to your collection!


Secondary Make
Model Name
Secondary Model
Vehicle Type
Passenger Car
Hobby Segment

Engine / Transmission

Engine Type
Engine Size
392 HEMI V8
Engine Number
Fuel Specification
Fuel Delivery System Type
Dual 4 Barrel
Transmission Type
3 Speed Automatic
Transmission Spec
A488 Torqueflite
Transmission Number


Entertainment System Type
AM Radio
Battery Location
Battery Shut Off
Battery Charger
Power Steering
Air Conditioning


Interior Color
Seating Type
Seat Material
Shifter Type
Push Button
Center Console


Body Style
Safe Body Color
Paint Type


Front Suspension Type
Torsion bar
Rear Suspension Type
Leaf Spring
Axle Specification
8 3/4
Front Wheel Specification
14" Steel
Rear Wheel Specification
14" Steel
Front Tire Specification
Rear Tire Specification
Front Brakes Specification
Power Drum
Rear Brakes Specification
Power Drum
Full Size
Exhaust Type
Dual Exhaust
Muffler Type
Original Equipment


Restoration Status
Mileage Since Restoration
Awards Summary
Historical Documents Summary
NOTE: original owner of this car was actress Valerie Harper.

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