Makes › Chrysler United States › 300J · Rare production · 1963 Very Rare

Chrysler
300J

Lowest-production letter car; hardtop only, 390 hp short-ram 413

IDENTIFICATION CARD · CHRYSLER 300J 1963
No licensed photograph yet. Photographs are published only when their licence permits it.
400BuiltIndependently researched
0Chassis documentedin this archive
111SurvivingRegistry reported
Contents
  1. 01Overview
  2. 02Production & history
  3. 03Specifications
  4. 04Colours & options
  5. 05Individual cars
  6. 06Reference

01Overview

At a glance

Built
400 Built
Years
1963
Engine
6,781 cc / 6.8 LFactory: 413.8 cu in · converted
Power
291 kW / 395 PSFactory: 390 hp · converted
Top speed
Not yet verified
Body
Not yet verified
Designer
Not yet verified
In this archive
Not yet verified
Surviving
111 (registry reported)

Sources and any conflicting figures are in the sections below.

Why it matters

The 300J was the 1963 hardtop-only letter car, with 390 bhp from short-ram 413 engine and 400 built. There was no 300 I, perhaps to avoid confusion with the numeral 1.

How rare is it?

Six separate kinds of rarity – never combined into one number.

Model rarityVery Rare 400 · Built1,2
Specification rarityNot yet assessed
Colour rarityNot yet assessed
Individual rarityNot yet assessed
Historical rarityNot yet assessed
Survival rarityNot yet assessed 111 · Surviving3

Each kind of rarity is rated separately and never combined.

02Production & history

Production

Every figure says what it counts.

What is countedFigureBasisStatus
Total model production300J cars accounted for in the Chrysler 300 Club registry as of September 2000 (400 produced); not a count of cars known to exist today 1113 Surviving examples Registry reported
Total model productioncoupés (only body style) 4001,2 Factory production Independently researched

Independent counts (e.g. engine and colour) are never combined into a calculated figure. Surviving examples are never presented as original production.

History

Chrysler dropped the letter convertible for 1963. The standard 413 had 'short' long rams divided only halfway, which moved the torque peak up from 2800 rpm to 3600 rpm and gave strong high-rpm performance. The suspension was softened slightly from the 300H but still stiffer than other Chryslers, and the car could reach 140 mph or more.

That year Chrysler supplied a non-letter 300 convertible, not the 300J, as the Indianapolis 500 pace car.

Variants

How each version differs from the standard 300J.

No variants documented yet. Have a source? Contribute it.

03Specifications

Technical specifications

Engine

Engine familyNot yet verified
Engine codeNot yet verified
LayoutNot yet verified
Displacement 6,781 cc / 6.8 LFactory: 413.8 cu in · converted1 Independently researched
Bore 106.4 mmFactory: 4.188 in · converted1 Independently researched
Stroke 95.3 mmFactory: 3.75 in · converted1 Independently researched
Compression ratio9.6:11 Independently researchedThe club's summary table gives 10.0:1.
Fuel systemtwo Carter AFB four-barrel carburettors (model 3505S), short-ram induction1 Independently researched
Power 291 kW / 395 PSFactory: 390 hp · converted1 Independently researchedSource states bhp.
Power at 4,800 rpm1 Independently researched
Torque 658 NmFactory: 485 lb-ft · converted1 Independently researched
Torque at 3,600 rpm1 Independently researched

Transmission & drivetrain

Gearboxautomatic (TorqueFlite) standard; heavy-duty three-speed manual optional at no cost1 Independently researched
GearsNot yet verified
Driven wheelsNot yet verified

Chassis, body & dimensions

ChassisNot yet verified
Front suspensionNot yet verified
Rear suspensionNot yet verified
BrakesNot yet verified
SteeringNot yet verified
Body constructionNot yet verified
Wheelbase 3,100 mmFactory: 122 in · converted1 Independently researched
Length 5,474 mmFactory: 215.5 in · converted1 Independently researched
WidthNot yet verified
HeightNot yet verified
Front trackNot yet verified
Rear trackNot yet verified
Kerb weight 1,810 kgFactory: 4,000 lb · converted1 Independently researched
Dry weightNot yet verified

Performance

Maximum speedNot yet verified
0–100 km/hNot yet verified
Fuel tankNot yet verified

“Not yet verified” means no source has been checked for that value yet. Nothing is estimated to fill a gap.

04Colours & options

Factory colours & interiors

Original paint and trim, with the number of cars in each where a source gives it.

Not yet documented. Have a source? Contribute it.

Factory options & codes

Codes are shown exactly as written by the manufacturer.

Not yet documented. Have a source? Contribute it.

05Individual cars

Chassis register

Every documented car, with its colours, history and where it is now. Open a row for the full record. Known chassis are not automatically authenticated originals.

Not yet documented. Have a source? Contribute it.

Competition history

Every race result of the individual cars, in date order. Click a chassis number to open its full record in the register.

Not yet documented. Have a source? Contribute it.

Auction & sale history

Documented public sales of the individual cars. Click a chassis number to open its full record in the register.

Not yet documented. Have a source? Contribute it.

See one in person

Museums where an example of this car can be seen.

No example is documented on public display yet. Have a source? Contribute it.

06Reference

Identification guide

How to tell an original from a replica or later conversion.

The 300J has leather in claret red regardless of exterior colour, a square steering wheel, wiper blades with airfoils, two pinstripes along the body and 300 J medallions on the C-pillar and rear deck. Serial numbers start 8433-100001 and engine prefix C300J followed by a date code. Tyres are 7.60x15.

Sources

Each number links to the exact facts it supports.

  1. 1
    1963 Chrysler 300J Level B Chrysler 300 Club, Incorporated
    • 842/2-Dr Ht Cpe-6P ... 400
    • Displacement: 413.8 cubic inches
    • Bore and stroke: 4.188 x 3.75 inches
    • Compression ratio: 9.6:1
    • Two (2) Carter Type AFB four-barrels Model 3505S
    • Brake horsepower: 390 at 4800 R.P.M.
    • 390 at 4800 R.P.M.
    • 485/3600
    • Automatic transmission was standard on 300 J
    • Wheelbase: 122 inches
    • (300 J) 215.5 inches
    • 842/2-Dr Ht Cpe-6P ... 4000
    Accessed 2026-11-12
  2. 2
  3. 3
    Chrysler 300 Club International Serial Number Registry (as of September 2000) Level B Chrysler 300 Club International · 2000-09-01
    • 300J 400 ... 111
    Accessed 2026-11-12