1970 Nova Parts and Restoration Information

100_0585

The 1970 Nova changed very little from the previous year featuring mainly stylistic changes. New side markers and taillight lenses gave the 1970 Nova a slightly different look from the 1969 Nova.

1970 would become the final year that the 396 engine was an available option. The 350 cubic inch 300 horse power would become the replacement for the top performance engine option. Only a small number of Novas produced in 1970 would use the 396 engine.

Once again Yenko dealerships would deliver a high performance Nova which remained highly sought after.  Only 175 1970 Novas would be converted by Yenko Chevrolet, continuing to make them very hard to come by.


1970 Nova OEM Brochure


1970 Nova Model Options

 
Body Styles & Model Options:
  • Coupe
  • 4-Door Sedan
  • Super Sport
 
Engine Options:
  • Super-Thrift 153 | 153ci | 90hp L4
  • L26 – Turbo-Thrift 230 | 230ci |140hp L6
  • L22 – Turbo-Thrift 250 | 250ci | 150hp L6
  • L14 – Turbo-Fire 307 | 307ci | 200hp V8
  • L65 – Turbo-Fire 350 | 350ci | 250hp V8
  • L48 – Turbo-Fire 350 | 350ci | 300hp V8
  • L34 – Turbo-Jet 396 | 402ci | 350hp V8
  • L78 – Turbo-Jet 396 | 402ci | 375hp V8
 
Available Transmissions:
  • Powerglide
  • 4-Speed Manual
  • 3-Speed
  • Torque-Drive
  • Turbo Hydra-Matic
 
Production Numbers:
  • Nova: 307,280
    • 2-Door Coupe: 0
    • 2-Door Convertible: 0
    • 2-Door Hatchback: 0
    • 2-Door Sedan: 226,223
    • 4-Door Sedan: 80,997
    • 4-Door Wagon: 0
    • Super Sport: 19,558
 
Dimensions & Capacities:
  • Length: 189.4 in / 15.78 ft
  • Width: 72.4 in / 6.03 ft
  • Height:
    • 2-Door Sedan: 52.5 in / 4.37 ft
    • 4-Door Sedan: 53.8 in / 4.48 ft
  • Wheelbase: 111 in / 9.25 ft

1970 Nova Engine Codes & Specs

Available Engine Specifications

Type

Size

Carb

RPO

Horsepower

Torque

Bore & Stroke (in.)

Compression Ratio

L4

153ci

1x1bbl

-

90 hp @ 4000 RPM

152 lb-ft @ 2400 RPM

3.875 x 3.258.5:1

L6

230ci

1x1bbl

L26

140 hp @ 4400 RPM

220 lb-ft @ 1600 RPM

3.875 x 3.258.5:1

L6

250ci

1x1bbl

L22

155 hp @ 4200 RPM

235 lb-ft @ 1600 RPM

3.875 x 3.538.5:1

V8

307ci

1x2bbl

L14

200 hp @ 4600 RPM

300 lb-ft @ 2400 RPM

3.875 x 3.259.0:1

V8

350ci

1x2bbl

L65

250 hp @ 4800 RPM

345 lb-ft @ 2800 RPM

4.000 x 3.489.0:1

V8

350ci

1x4bbl

L48

300 hp @ 4800 RPM

380 lb-ft @ 3200 RPM

4.000 x 3.4810.25:1

V8

402ci

1x4bbl

L34

350 hp @ 5200 RPM

415 lb-ft @ 3400 RPM

4.125 x 3.7510.25:1

V8

402ci

1x4bbl

L78

375 hp @ 5600 RPM

415 lb-ft @ 3600 RPM

4.125 x 3.7511.0:1
4 Cylinder Engine Codes
Code

Size / Carb

HP / RPO

Transmission

Notes

153

CCA

153 cid 1x1bbl

90 hp

3-Speed Manual

CCB

153 cid 1x1bbl

90 hp

Powerglide
6 Cylinder Engine Codes
Code

Size / Carb

HP / RPO

Transmission

Notes

CAA

250 cid 1x1bbl

155 hp L22

3-speed Manual

-

CAB

250 cid 1x1bbl

155 hp L22

Powerglide

-

CCC

230 cid 1x1bbl

140 hp L26

3-Speed Manual

-

CCD

230 cid 1x1bbl

140 hp L26

Torque Drive

-

CCG

250 cid 1x1bbl

155 hp L22

3-Speed Manual

-

CCK

250 cid 1x1bbl

155 hp L22

TH350

Taxi & Police Equipment

CCL

250 cid 1x1bbl

155 hp L22

3-Speed Manual

Taxi & Police Equipment

CCM

250 cid 1x1bbl

155 hp L22

Powerglide

Taxi & Police Equipment

CCZ

250 cid 1x1bbl

155 hp L22

3-Speed Manual

-

CRF

250 cid 1x1bbl

155 hp L22

3-Speed Manual

-

CRG

250 cid 1x1bbl

155 hp L22

3-Speed Manual

-

8 Cylinder Engine Codes
Code

Size / Carb

HP / RPO

Transmission

Notes

307

CCA

307 cid 1x2bbl

200 hp L14

3-Speed Manual

-

CCC

307 cid 1x2bbl

200 hp L14

Powerglide

-

CNC

307 cid 1x2bbl

200 hp L14

3-Speed Manual

-

CND

307 cid 1x2bbl

200 hp L14

3-Speed Manual

-

CNE

307 cid 1x2bbl

200 hp L14

Powerglide

-

CNF

307 cid 1x2bbl

200 hp L14

TH350

-

350

CGA

350 cid 1x2bbl

250 hp L65

3-Speed Manual

-

CGB

350 cid 1x2bbl

250 hp L65

Powerglide

-

CGC

350 cid 1x2bbl

250 hp L65

TH350

-

CGK

350 cid 1x4bbl

300 hp L48

Manual

-

CGL

350 cid 1x4bbl

300 hp L48

TH350

-

CJD

350 cid 1x4bbl

300 hp L48

TH350

-

CJG

350 cid 1x4bbl

300 hp L48

4-Speed Manual

-

CNI

350 cid 1x2bbl

250 hp L65

3-Speed Manual

-

CNJ

350 cid 1x4bbl

300 hp L48

Manual

-

CNK

350 cid 1x4bbl

300 hp L48

Powerglide

-

CNM

350 cid 1x2bbl

250 hp L65

Powerglide

-

CNN

350 cid 1x2bbl

250 hp L65

TH350

-

CRE

350 cid 1x4bbl

300 hp L48

TH350

-

CTB

350 cid 1x4bbl

300 hp L48

Manual

LT1

CTC

350 cid 1x4bbl

300 hp L48

TH400

LT1

402

CKO

402 cid 1x4bbl

375 hp L78

Manual

-

CKP

402 cid 1x4bbl

375 hp L78

TH400

L89 Aluminum Heads

CKQ

402 cid 1x4bbl

375 hp L78

Manual

Heavy Duty Clutch

CKT

402 cid 1x4bbl

375 hp L78

Manual

L89 Aluminum Heads

CKU

402 cid 1x4bbl

375 hp L78

Manual

L89 Aluminum Heads & Heavy Duty Clutch

CTW

402 cid 1x4bbl

350 hp L34

TH400

-

CTX

402 cid 1x4bbl

350 hp L34

Manual

-

CTY

402 cid 1x4bbl

375 hp L78

TH400

-

1970 Nova Transmission Codes

Code

Description

Engines

Assembly Plants

RR

3-Speed

All

M = Muncie

WA

4-Speed

V8

P = Muncie

UL

Torque Drive

L4, L6

A = Cleveland

VE

Powerglide

L6

C = Cleveland | T = Toledo

UE

Powerglide

V8

C = Cleveland | T = Toledo

GN

TH350

L6

X = Cleveland | Y = Toledo

GS

TH350

V8

X = Cleveland | Y = Toledo

1970 Nova Rear Axle Ratio

CodeAxle Ratio

Notes

CBA

2.56:1

Open 10-bolt

CBB

2.56:1

Positraction 10-bolt

CBC

3.36:1

Open 10-bolt

CBD

3.36:1

Positraction 10-bolt

CBL

3.07:1

Open 12-bolt

CBM

3.31:1

Open 12-bolt

CBN

3.55:1

Open

CBP

2.73:1

Open 10-bolt

CBR

3.07:1

Positraction 12-bolt

CBS

3.31:1

Positraction 12-bolt

CBT

3.55:1

Positraction

CBW

4.10:1

Positraction 12-bolt

CPA

3.08:1

Open 10-bolt

CPE

3.08:1

Positraction 10-bolt

CPI

2.56:1

Open 10-bolt

CPJ

2.56:1

Positraction 10-bolt

CPO

3.08:1

Open 10-bolt

CPR

3.08:1

Positraction 10-bolt

CPX

2.73:1

Positraction 10-bolt

1970 Nova Factory Options

Regular Production Option (RPO)

RPODescriptionUnits
A01Tinted Glass - all windows107,186
A02Tinted Glass - windshield only3,505
C60Air Conditioning - deluxe45,139
G80Rear axle - Positraction19,695
J50Vacuum power brake equipment33,315
L34V8 engine - 396 Hi-performance1,802
L48V8 engine - 35013,991
L65V8 engine - 350 2-bbl20,838
L78V8 engine - 396 Special Hi-performance3,765
MB1Torque-drive transmission11,741
M153-speed manual transmission49,971
M204-speed manual transmission13,198
M214-speed manual transmission - close ratio3,448
M35Powerglide transmission157,920
M383-speed automatic transmission - TH35077,608
M403-speed automatic transmission - TH4001,236
N40Power steering157,738
UM2Stereo tape & AM/FM stereo radio315
U17Front compartment console instrument cluster3,418
U63Radio - AM push button265,852
U69Radio - AM/FM push button3,114
U79Stereo equipment473
Z26Super Sport19,558

1970 Nova Cowl Tag Information

1970 Nova Example Cowl Tag & Breakdown
1970 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

70 = 1970

1 = Chevrolet

11 = Nova, L4

27 = 2-Door Sedan

WRN = Willow Run, MI

Starts with 100001

13 = Nova, L6

69 = 4-Door Sedan

14 = Nova, V8

Line 2: Trim and Paint

Interior Trim

Exterior Paint (Lower/Upper)

731 = Black Vinyl Bench (Standard)

10 = Classic White

732 = Black Vinyl Bench (Custom)

14 = Cortez Silver

733 = Black Vinyl Buckets

17 = Shadow Gray

735 = Medium Blue Cloth Bench (Standard)

19 = Tuxedo Black

736 = Medium Blue Cloth Bench (Custom)

25 = Astro Blue

740 = Medium Gold Cloth Bench (Standard)

28 = Fathom Blue

741 = Medium Gold Cloth Bench (Custom)

34 = Misty Turquoise

742 = Medium Gold Vinyl Buckets

43 = Citrus Green

744 = Dark Green Cloth Bench (Custom)

45 = Green Mist

745 = Dark Green Cloth Bench (Standard)

48 = Forest Green

746 = Medium Sandalwood Vinyl Buckets

50 = Gobi Beige

747 = Medium Sandalwood Vinyl Bench (Custom)

52 = Sunflower Yellow

55 = Champagne Gold

58 = Autumn Gold

63 = Desert Sand

65 = Hugger Orange

75 = Cranberry Red

78 = Black Cherry

A = White Vinyl Roof

B = Black Vinyl Roof

C = Dark Blue Vinyl Roof

G = Dark Green Vinyl Roof

H = Gold 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 1970 Nova Links:

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