1978 Nova Parts and Restoration Information

1978_nova 

The base 1978 Nova model changed very little from 1977.

While the base car merely had a Chevy Bowtie emblem added to the leading edge of the hood, the Rally Novas got a new front end layout with a diamond-patterned grille, black headlight bezels and horizontal parking lights and new color-keyed Rally wheels and triple body stripes.

The same base L6 and two V8 options remained the same for 1978 models. So too did the three body styles, although the hatchback was significantly outsold by the coupe and sedan models.


1978 Chevy Nova Brochure


1978 Nova Model Options & Information

 
Body Styles:
  • 2-Door Coupe
  • 2-Door Hatchback
  • 4-Door Sedan

 

Trim Levels:

  • Nova
  • Custom
  • Nova Rally
 
Engine Options:
  • L22 – Turbo-Thrift 250 | 250ci | 110hp L6
  • LG3 – 305ci | 145hp V8
  • LM1 – Turbo-Fire 350 | 350ci | 160hp V8
 
Production Numbers:
  • Nova: 288,109
    • 2-Door Coupe: 0
    • 2-Door Convertible: 0
    • 2-Door Hatchback: 12,665
    • 2-Door Sedan: 125,811
    • 4-Door Sedan: 149,633
    • 4-Door Wagon: 0
    • Super Sport: 0
 
Dimensions & Capacities:
  • Length: 196.7 in / 16.39 ft
  • Width: 72.2 in / 6.01 ft
  • Height:
    • 2-Door Hatch & 2-Door Sedan: 52.7 in / 4.39 ft
    • 4-Door Sedan: 53.6 in / 4.46 ft
  • Wheelbase: 111 in / 9.25 ft

 

1978 Nova Engine Codes & Specs

Available Engine Specifications

Type

Size

Carb

RPO

Horsepower

Torque

Bore & Stroke (in.)

Compression Ratio

L6

250ci

1x1bbl

L22

110 hp @ 3800 RPM

190 lb-ft @ 1600 RPM

3.875 x 3.538.1:1

V8

305ci

1x2bbl

LG3

145 hp @ 3800 RPM

245 lb-ft @ 2400 RPM

3.736 x 3.488.4:1

V8

350ci

1x4bbl

LM1

160 hp @ 3800 RPM

260 lb-ft @ 2400 RPM

4.000 x 3.488.2:1
1978 Nova 6 Cylinder Engine Codes
Code

Size / Carb

HP / RPO

Transmission

Notes

250

C3Y

250 cid 1x1bbl

110 hp L22

n/a

-

CCH

250 cid 1x1bbl

110 hp L22

TH350

NB2 California Emissions

CCJ

250 cid 1x1bbl

110 hp L22

3-Speed Manual

-

CCK

250 cid 1x1bbl

110 hp L22

TH350

-

1978 Nova 8 Cylinder Engine Codes
Code

Size / Carb

HP / RPO

Transmission

Notes

305

CPJ

305 cid 1x2bbl

145 hp LG3

n/a

-

CTH

305 cid 1x2bbl

145 hp LG3

4-Speed Manual

-

CTJ

305 cid 1x2bbl

145 hp LG3

n/a

-

CTK

305 cid 1x2bbl

145 hp LG3

TH350

NB2 California Emissions

350

CHJ

350 cid 1x4bbl

160 hp LM1

TH350

-

CHL

350 cid 1x4bbl

160 hp LM1

TH350

-

CUM

350 cid 1x4bbl

160 hp LM1

n/a

-

CUR

350 cid 1x4bbl

160 hp LM1

n/a

-

CUS

350 cid 1x4bbl

160 hp LM1

n/a

-

1978 Nova Transmission Codes

Code

Description

Engines

Assembly Plant

UR

3-Speed

L6, V8

S = Muncie

ZM

4-Speed

V8

P = Muncie

5WZ

TH350

L6

D = Parma

AG

TH350

V8

Y = Toledo

1978 Nova Rear Axle Codes

CodeAxle Ratio

Notes

PA

2.73:1

Open

PC

3.08:1

Open

PE

3.42:1

Open

PH

2.56:1

Open

PJ

2.41:1

Open

PS

2.41:1

Positraction

PT

2.56:1

Positraction

PU

2.73:1

Positraction

PW

3.08:1

Positraction

PY

3.42:1

Positraction

2PA

2.73:1

Open

2PC

3.08:1

Open

2PU

2.73:1

Positraction

2PW

3.08:1

Positraction

2TV

2.41:1

Open

2TX

3.08:1

Open

2TY

2.73:1

Open

1978 Nova Factory Options

Regular Production Option (RPO)

RPODescriptionUnit
AB8Formal rear quarter window - Cabriolet roof9,352
AK1Deluxe belts & harness front53,239
AU3Power door lock system6,477
A01Tinted Glass - all windows159,067
A02Tinted Glass - windshield only6,575
A20Swing-out rear quarter window2,874
A31Power windows4,097
BW2Deluxe body side molding24,022
B3WAdvance price sheet27,418
B37Floor mats68,286
B51Bright rocker and extension moldings11,099
B74Wide wheel opening moldings12,763
B80Roof drip rails110,672
B84Body side molding177,978
B90Door and window frame molding26,214
B93Door edge guards34,536
B96Wheel opening molding34,598
CD4Intermittent windshield wiper7,435
C50Rear window defroster78,772
C60Air Conditioning - deluxe149,397
D31Day-night inside rearview mirror12,177
D33Outside mirror - remote control66,063
D35Sport mirrors41,678
D55Front compartment floor console5,008
D85Body side pin striping8,619
F40Special heavy duty front & rear suspension18,222
F41Special performance front & rear suspension3,489
G80Rear axle - Positraction8,169
G92Rear axle - 3.08 ratio (Performance / High Altitude)3,395
J50Vacuum power brake equipment220,133
K05Engine block heater7,442
K30Cruise-master speed control10,626
LG3V8 engine - 305 2-bbl92,184
LM1V8 engine - 350 regular fuel7,646
L22L6 engine - 250188,279
MM33-speed manual transmission12,032
MM44-speed manual transmission3,070
M383-speed automatic transmission - TH350273,007
NA6High altitude emission equipment2,008
N33Comfortilt steering wheel29,753
N41Variable ratio power steering279,265
N65Spacesaver spare tire1,552
N95Simulated wire wheel trim cover4,037
P01Wheel trim cover170,248
QBTFR78-14/B steel belt radial tires - white letter4,053
QDVFR78-14/B steel belt radial tires - blackwall18,631
QDWFR78-14/B steel belt radial tires - white stripe107,766
QEGE78-14/B Bias belt tires - blackwall37,216
QEHE78-14/B bias belt tires - white stripe120,455
UA1Heavy duty battery18,612
UM1Stereo tape system w/AM radio2,393
UM2Stereo tape & AM/FM stereo radio2,150
U05Dual horn17,937
U14Special instrumentation3,724
U35Electric clock20,216
U58AM/FM stereo radio4,926
U63Radio - AM push button181,818
U69Radio - AM/FM push button22,386
U76Windshield antenna53,512
U80Auxiliary speaker13,312
V01Heavy duty radiator12,409
V30Front & rear bumper guards38,423
YC8Demo option drive1,241
YF5California assembly line emission test17,968
YJ7Demo drive669
ZJ3Interior convenience package47,085
ZJ7Special wheel, hub cap and trim ring (Rally wheel)34,778
ZJ9Auxiliary lighting group24,445
ZN5Color keyed Rally wheels6,739
Z26Rally Nova package6,903
Z49Canadian base equipment25,514
11LAntique white24,109
11NWhite vinyl bench / black accents1,713
11TWhite vinyl roof cover4,283
15LSilver29,388
15TSilver vinyl roof cover1,484
19LBlack6,246
19RBlack vinyl buckets16,274
19TBlack vinyl roof cover1,764
19ZBlack vinyl bench2,634
22LLight blue metallic47,831
22TLight blue vinyl roof cover2,537
24BBlue knit cloth bench27,166
24DBlue knit cloth bench9,156
24LMedium blue19,091
24RBlue vinyl buckets43,867
44LMedium green17,061
44NGreen vinyl bench5,766
44TMedium green vinyl roof cover1,741
48LDark blue-green metallic12,786
51LBright yellow5,123
61LLight buckskin19,779
61TLight buckskin vinyl roof cover6,252
62BCamel knit cloth bench38,842
62DCamel knit cloth bench8,762
62NCamel vinyl bench10,630
62RCamel vinyl buckets62,263
62ZCamel vinyl bench3,892
63LLight saddle metallic31,200
67LMedium saddle metallic10,879
69LDark brown metallic25,929
74DCarmine knit cloth bench6,244
74NCarmine vinyl bench8,157
74RCarmine vinyl buckets42,754
75LLight red9,199
77LCarmine metallic25,431
79TDark carmine metallic vinyl roof cover1,834

1978 Nova Cowl Tag Info

1978 Nova Example Cowl Tag & Breakdown
1978 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

77 = 1977

1 = Chevrolet

XX = Nova

17 = 2-Door Hatchback

T = Tarrytown, NY

Sequence Starts at 100001

XY = Nova Custom

27 = 2-Door Sedan

W = Willow Run, MI

69 = 4-Door Sedan

Line 2: Trim and Paint

Interior Trim

Seat Type

Exterior Paint (Lower/Upper)

11N = White Vinyl Bench

A51 = Bucket Seats

11 = White

19R = Black Vinyl Bench

A52 = Bench Seat

15 = Silver Metallic

24B = Light Blue Cloth Bench

19 = Black

24D = Light Blue Cloth Bench

22 = Light Blue Metallic

24R = Light Blue Vinyl Bench

24 = Ultramarine Blue Metallic

44N = Dark Green Vinyl Bench or Buckets

44 = Medium Green Metallic

62B = Camel Tan Cloth Bench

48 = Dark Blue-Green Metallic

62D = Camel Tan Cloth Bench

51 = Bright Yellow

62N = Camel Tan Cloth Bench

61 = Camel Beige

62R = Camel Tan Vinyl Bench

63 = Camel Tan Metallic

74D = Carmine Cloth Bench

67 = Saffron Metallic

74N = Carmine Vinyl Bench or Buckets

69 = Dark Camel Metallic

74R = Carmine Vinyl Bench

75 = Medium Red

77 = Carmine Metallic

Cloth and Vinyl Usage:

11T = White Vinyl Roof

B = Bordeau Woven Sport Cloth

15T = Silver Vinyl Roof

D = Edinburgh Woven Sport Cloth

19T = Black Vinyl Roof

N = Wallaby Vinyl

22T = Light Blue Vinyl Roof

R = Plisse Vinyl

44T = Light Green Vinyl Roof

61T = Light Camel Vinyl Roof

79T = Dark Carmine 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 1978 Nova Links:

Share this information with your friends!

Share on facebook
Facebook
Share on twitter
Twitter
Share on email
Email

Shipping Delays

See what brands are experiencing delays

Operation Status

See what we're doing at Ground Up SS396.com

Parts Catalog

Chevelle & El Camino, Camaro, & Nova
Free

We Want To See Your Car!

Submit your car to be featured today!

Follow Us On Social

MORE ARTICLES FROM GROUND UP SS396.COM