1973 Nova Parts and Restoration Information

1973 Chevy Nova Coupe

In 1973 Chevrolet once again reworked the Nova to introduce a hatchback body style and also restyled the front and rear end.

Due to new government mandates, Chevrolet had to redesign the front and rear bumpers to increase the size and strength. This was in order to comply with new automotive safety standards. A new grille with crosshatch inserts and parking lights located inside of the headlights were also added. Every Nova in 1973 also received side guard door beams, additional sound insulation, and better flow-through ventilation.

The Super Sport option still remained available but was mainly a visual package. It featured a blacked out grille, rally wheels, and could be ordered with any of the available engines. By 1973 the 307 and 350 were the most common of engine options available for the Chevy Nova.


1973 Nova OEM Brochure

Images provided by My Classic Garage


1973 Nova Model Options

 
Body Style & Model Options:
  • Coupe
  • 4-Door Sedan
  • Hatchback Coupe
  • Custom Hatchback
  • Custom Coupe
  • Custom 4-Door Sedan
 
Engine Options:
  • L22 – Turbo-Thrift 250 | 250ci | 100hp L6
  • L14 – Turbo-Fire 307 | 307ci | 115hp V8
  • L65 – Turbo-Fire 350 | 350ci | 145hp V8
  • L48 – Turbo-Fire 350 | 350ci | 175hp V8
 
Available Transmission:
  • Powerglide
  • 4-Speed Manual
  • 3-Speed
  • Turbo Hydra-Matic
 
Production Numbers:
  • Nova: 369,509
    • 2-Door Coupe: 0
    • 2-Door Convertible: 0
    • 2-Door Hatchback: 91,012
    • 2-Door Sedan: 194,197
    • 4-Door Sedan: 84,300
    • 4-Door Wagon: 0
    • Super Sport: 35,542
 
Dimensions & Capacities:
  • Length: 194.3 in / 16.19 ft
  • Width: 72.4 in / 6.03 ft
  • Height:
    • 2-Door Sedan: 52.4 in / 4.36 ft
    • 2-Door Hatchback: 52.5 in / 4.36 ft
    • 4-Door Sedan: 53.9 in / 4.49 ft
  • Wheelbase: 111 in / 9.25 ft

 

1973 Nova Engine Codes & Specs

Available Engine Specifications

Type

Size

Carb

RPO

Horsepower

Torque

Bore & Stroke (in.)

Compression Ratio

L6

250ci

1x1bbl

L22

100 hp @ 3600 RPM

175 lb-ft @ 1600 RPM

3.875 x 3.538.5:1

V8

307ci

1x2bbl

L14

115 hp @ 3600 RPM

205 lb-ft @ 2000 RPM

3.875 x 3.258.5:1

V8

350ci

1x2bbl

L65

145 hp @ 4000 RPM

255 lb-ft @ 2400 RPM

4.000 x 3.488.5:1

V8

350ci

1x4bbl

L48

175 hp @ 4000 RPM

260 lb-ft @ 2800 RPM

4.000 x 3.488.5:1
1973 Nova 6 Cylinder Engine Codes
Code

Size / Carb

HP / RPO

Transmission

Notes

CCA

250 cid 1x1bbl

100 hp L22

Powerglide

-

CCB

250 cid 1x1bbl

100 hp L22

Powerglide

NB2 California Emissions

CCC

250 cid 1x1bbl

100 hp L22

3-Speed Manual

NB2 California Emissions

CCD

250 cid 1x1bbl

100 hp L22

3-Speed Manual

-

1973 Nova 8 Cylinder Engine Codes
Code

Size / Carb

HP / RPO

Transmission

Notes

CHA

307 cid 1x2bbl

115 hp L14

TH350

-

CHB

307 cid 1x2bbl

115 hp L14

3-Speed Manual

-

CHC

307 cid 1x2bbl

115 hp L14

TH350

NB2 California Emissions

CHD

307 cid 1x2bbl

115 hp L14

3-Speed Manual

NB2 California Emissions

CHH

307 cid 1x2bbl

115 hp L14

TH350

-

CHK

307 cid 1x2bbl

115 hp L14

TH350 and NB2

NB2 California Emissions

CKA

350 cid 1x2bbl

145 hp L65

3-Speed Manual

-

CKB

350 cid 1x4bbl

175 hp L48

4-Speed

-

CKC

350 cid 1x2bbl

145 hp L65

3-Speed Manual

NB2 California Emissions

CKD

350 cid 1x4bbl

175 hp L48

TH350

NB2 California Emissions

CKH

350 cid 1x4bbl

175 hp L48

4-Speed Manual

NB2 California Emissions

CKK

350 cid 1x2bbl

145 hp L65

TH350

NB2 California Emissions

CKR

350 cid 1x4bbl

175 hp L48

TH350

NB2 California Emissions

CKU

350 cid 1x4bbl

175 hp L48

TH350

-

CKW

350 cid 1x2bbl

145 hp L65

TH350

-

1973 Nova Transmission Codes

Code

Description

Engines

Assembly Plant

TM

3-Speed

L6, V8

S = Muncie

VC

4-Speed

V8

P = Muncie

TR

Powerglide

L6

C = Cleveland

FA

TH350

V8

B = Cleveland | Y = Toleldo

1973 Nova Rear Axle Ratio

CodeAxle Ratio

Notes

JA

2.73:1

Open

JB

3.08:1

Open

JC

3.42:1

Open

JM

2.73:1

Posi

JN

3.08:1

Posi

JP

3.42:1

Posi

1973 Nova Factory Options

Regular Production Option (RPO)

RPODescriptionUnits
AK1Deluxe belts & harness front22,416
A01Tinted Glass - all windows180,816
A02Tinted Glass - windshield only5,856
A51Front bucket seat - Strato type45,433
B37Floor mats50,975
B84Body side molding96,059
B93Door edge guards73,006
CF1Skyroof3,259
C08Exterior soft trim roof cover42,710
C50Rear window defroster30,046
C60Air Conditioning - deluxe127,212
D33Outside mirror - remote control40,848
D35Sport mirrors28,842
D55Front compartment floor console34,521
F40Special heavy duty front & rear suspension16,576
F41Special performance front & rear suspension4,770
G80Rear axle - Positraction14,699
JL2Disc brakes front77,448
J50Vacuum power brake equipment36,943
K05Engine block heater2,849
L22L6 engine - 250106,437
L48V8 engine - 35016,238
L65V8 engine - 350 2-bbl104,036
M113-speed Floor shift transmission control17,712
M153-speed manual transmission37,613
M204-speed manual transmission8,140
M35Powerglide transmission78,194
M383-speed automatic transmission - TH350245,562
N33Comfortilt steering wheel7,774
N40Power steering296,966
N65Spacesaver spare tire733
N95Simulated wire wheel trim cover903
P01Wheel trim cover150,303
P06Wheel trim ring13,116
QEBE70-14/B white letter tires26,341
QEEE78-14 white stripe tires214,410
QEHE78-14/B bias belt tires - white stripe30,254
T60Heavy duty battery17,282
U05Dual horn2
U17Front compartment console instrument cluster10,002
U35Electric clock17,510
U63Radio - AM push button304,890
U69Radio - AM/FM push button22,990
U76Windshield antenna1,066
U80Auxiliary speaker49,611
VE5Deluxe bumpers5,558
V01Heavy duty radiator32,834
YA7California assembly line emission test27,940
YD1Axle for trailering1,100
ZJ4Trailering towing package67
ZJ5Exterior decor package146,831
ZJ7Special wheel, hub cap and trim ring (Rally wheel)67,920
ZJ9Auxiliary lighting group19,525
Z26Super Sport35,542
Z54Interior decor/quiet group25,217
751Interior trim - black vinyl54,025
753Interior trim - black vinyl19,648
757Interior trim - dark green vinyl11,441
760Interior trim - dark green vinyl19,924
767Interior trim - medium chamois vinyl15,327
984Color combination two-tone - dark blue / white3,918
990Color combination two-tone - light green / white3,866
991Color combination two-tone - green gold / white3,619
993Color combination two-tone - light yellow / white1,109
994Color combination two-tone - chamois / white2,629
995Color combination two-tone - med orange / white1,692

1973 Nova Cowl Tag Info

1973 Nova Example Cowl Tag & Breakdown
1973 nova

The Cowl Trim Tag, located on the cowl area identifies significant information about your car. 

Click here for further cowl tag decoding information

Line 1: Year, GM Division, Model & Body, Assembly Plant, Sequence Number

Year

GM Division

Model Series

Body Code

Assembly Plant

Sequence Number

73 = 1973

1 = Chevrolet

XX = Nova

17 = 2-Door Hatchback

L = Van Nuys, CA

Starts at 100001

XY = Nova Custom

27 = 2-Door Sedan

W = Willow Run, MI

69 = 4-Door Hatchback

Line 2: Trim and Paint

Interior Trim

Seat Type

Exterior Paint (Lower/Upper)

750 = Black Sport Cloth Bench (Custom)

A51 = Bucket Seats

11 = Antique White

751 = Black Knit Vinyl Bench or Buckets (Standard)

A52 = Bench Seat

24 = Light Blue Metallic

752 = Black Sport Cloth Bench of Buckets (Custom)

26 = Dark Blue Metallic

753 = Black Knit Vinyl Bench (Standard)

29 = Midnight Blue Metallic

754 = Black Perforated Vinyl Buckets (Custom)

42 = Dark Green Metallic

755 = Black Cloth Bench (Standard)

44 = Light Green Metallic

756 = Blue Cloth Bench (Standard)

46 = Green-Gold Metallic

757 = Green Knit Vinyl Bench (Standard)

48 = Midnight Green

758 = Green Cloth Bench (Standard)

51 = Light Yellow

759 = Green Cloth Bench (Standard)

56 = Chamois

760 = Green Knit Vinyl Bench (Standard)

60 = Light Copper Metallic

761 = Green Cloth Bench (Custom)

64 = Silver Metallic

763 = Neutral Knit Vinyl Buckets (Standard)

68 = Dark Brown Metallic

764 = Neutral Cloth Bench (Custom)

74 = Dark Red Metallic

767 = Chamois Knit Vinyl Bench (Standard)

75 = Medium Red

769 = Neutral Cloth Bench (Standard)

97 = Medium Orange Metallic

770 = Green Cloth Bench (Custom)

A = White Vinyl Roof

771 = Neutral Perforated Vinyl Buckets (Custom)

B = Black Vinyl Roof

772 = Blue Cloth Bench (Standard)

D = Blue Vinyl Roof

F = Chamois Vinyl Roof

G = Green Vinyl Roof

H = Maroon Vinyl Roof

T = Neutral Vinyl Roof

Line 3: Build Month and Week

Month

Week

01 = January

A = First Week

02 = February

B = Second Week

03 = March

C = Third Week

04= April

D = Fourth Week

05 = May

E = Fifth Week

06 = June

07 = July

08 = August

09 = September

10 = October

11 = November

12 = December

Additional 1973 Nova Links:

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