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1st Gen Information

1st Gen Options and Codes

Cowl Tag, Vin Decode
Cowl Decode
Vin Decode

Chevy V8 Bore and Stroke List Small Block Chevy Casting Numbers
SBC Block Casting Numbers
SBC Block Suffix Codes
SBC Head Casting Numbers
SBC Crankshaft Casting Numbers SBC Intake Manafold Casting Numbers SBC CamShaft Numbers SBC Piston Numbers

Big Block Chevy Casting Numbers
BBC Block Casting Numbers
BBC Block Suffix Codes
BBC Head Casting Numbers
BBC Crankshaft Casting Numbers BBC Intake Manafold Casting Numbers BBC Camshaft Numbers BBC Piston Numbers

 Muncie 4 Speed Identification

Chevy Bellhousing Identification

67, 68, 69 and 2nd Generation Camaro Gallery

Links for Information, Service and Parts

Links to Parts Manufacturers

SBC Crank Casting Numbers

Small Block Chevy Crankshafts

All crankshafts have a casting number located on one of the rough finished throws or counterweights towards the front of the crank. Two types of crankshafts are offered, cast nodular iron and forged steel. Since forged cranks are more expensive to produce, they are generally used only in high performance or severe duty (truck) applications.

Forged crankshafts are easily identified vs cast because a forged crank will have a wide parting line running down the length of the crank, while the cast crank has a thin parting line. Some forged cranks are tufftrided, which is a chemical heat treating process that hardens the bearing journal surfaces. When a crank is tufftrided it will have a dull grey color to it. Many cranks used in severe applications are cross-drilled, which helps ensure constant oiling to the main bearings. All tufftrided cranks are cross-drilled. Not all cross-drilled cranks are tufftrided.

Rear Main Seal

Beginning in 1986 all production small block chevy engines used a 1 piece rear main seal. This means the bolt pattern on the end of the crankshaft was reduced to 3.00".

Journal Size
Journal sizes were increased in 1968.


Rod
Main
Displacments
Small Journal
2.00
2.30
265, 283, 302, 327
Large Journal
2.10
2.450
262, 267, 302, 305, 327, 350
400 Crank

2.10

2.650

400, "Some pre 86 Bowtie have 2.450" Mains"


Click on the header to sort.

Casting Number

CID

Year

Application

Notes

1130

327

68-69

Truck

Large Journal

1130

327

68-69

Pass,Camaro,Chevelle,Nova

Large Journal

1130

307

68-73

1130

307

68-73

Truck

1181

350

68-76

14088526

305

85-89

Truck

Cast Iron, One piece rear main seal

14088526

350

86-89

Truck

Cast Iron, One piece rear main seal

14088526

305

86-89

Pass,Camaro,Monte Carlo

Cast Iron, One piece rear main seal

14088526

350

87-89

Camaro,Corvette

Cast Iron, One piece rear main seal

14088532

350

86-88

Truck

Forged,one piece rear main seal

14088535

305

85-89

Truck

One Piece Rear Main Seal

14088535

350

86-89

Truck

One Piece Rear Main Seal

14088535

305

86-89

Pass,Camaro,Monte Carlo,Malibu

One Piece Rear Main Seal

14088535

350

87-88

Camaro,Corvette

One Piece Rear Main Seal

310514

350

75-76

Truck

310514

350

75-85

3279

302

68-69

Z/28,Camaro

Forged,Large Journal,Hi-Perf

35431

262

75-76

Monza,Nova

3727449

283

57-67

Forged

3727449

265

55-57

Pass,Corvette

Forged

3734627

283

57-65

Forged

3734627

327

62-67

Truck

small journal

3734627

327

64-67

small journal

3735236

265

55-57

Forged

3735236

265

56-57

Truck

Forged

3735236

283

57-67

Forged

3735236

283

58-63

Truck

Forged

3735263

283

57-63

Forged

3735263

283

58-62

Truck

Forged

3782680

327

62-67

Truck

Forged,small journal

3782680

327

62-67

Truck

small journal

3782680

327

62-67

3782680

327

62-67

small journal

3815822

265

55-57

Pass,Corvette

Forged

3815822

283

55-67

Truck

Forged

3815822

283

55-67

Forged

3835236

283

57

Truck

Forged

3835236

283

57-65

Forged

3835236

283

57-65

Forged

3835266

265

56-57

Pass,Corvette

Forged

3835266

265

56-57

Truck

Forged

3835266

283

57-63

Truck

Forged

3835266

283

57-63

Passenger,Corvette

Forged

3849847

283

57-65

Forged

3849847

283

63-67

Truck

Cast Iron

3849847

283

64-67

Cast Iron

3876764

283

64-67

3876764

283

64-67

3876768

283

64-67

3876768

283

64-67

Truck

3892690

350

67

3892690

350

67-72

3892690

350

69-85

Truck

Forged Large Journal

3892690

350

75-76

Pass,Camaro,Chevelle Corvette,Nova

Forged Large Journal

3911001

327

68-69

Cast Iron,Large Journal

3911001

327

68-69

Truck

Cast Iron,Large Journal

3911001

307

68-73

Cast Iron

3911001

307

68-73

Truck

Cast Iron

3932442

350

68-81

Pass,Camaro,Chevelle Corvette,Nova

Cast Iron,Large Journal

3932442

350

69-85

Truck

Cast Iron,Large Journal

3932442

305

76-85

Truck

Cast Iron,Large Journal

3932442

305

76-85

Cast Iron,Large Journal

3932442

267

79-82

Cast Iron,Large Journal

39411182

350

69-85

Truck

Forged Large Journal

39411182

350

70

Z/28

Forged Large Journal

3941174

327

68-69

Truck

Cast Iron,Large Journal

3941174

327

68-69

Cast Iron,Large Journal

3941174

307

68-73

Cast Iron,Large Journal

3941174

307

68-73

Truck

Cast Iron,Large Journal

3941178

302

68-69

Z/83,Camaro

Forged Large Journal High Performance

3949847

283

64-67

Small Journal

3951529

400

70-80

Cast Iron,externally balanced

4577

327

62-67

Small Journal

4577

327

62-67

Truck

Small Journal

4672

327

68-69

Truck

Large Journal

4672

327

68-69

Large Journal

4672

307

68-73

4672

307

68-73

Truck

Small Block Chevy Flywheel Part Numbers

Part #DIA.TeethComments
399146914"168two-piece seal, internally balanced
398639414"168400 External balance, two-piece seal
1010583214"16886-later, one-piece rear seal, ext. balance
1408572012.75"153Lightweight (15 lbs.), nodular iron, two-piece seal, int bal
1408864612.75"15386-up, Lightweight (15 lbs.), nodular iron, one-piece rear seal, ext bal
1408864814"16886-up, one-piece rear seal, ext. balance
1408865012.75"15386-up, one-piece rear seal, ext balance
10174482 89-up with six-speed m/t, requires starter (10455709)

Common clutch:10.4", 11.0", and 11.85". Some flywheels are drilled for two different clutch patterns.




Small Block Chevy Flexplate Part Numbers

Part #DIA.TeethComments
47152912.75"153Two-piece seal blocks, int balance
47157814"168400 ext. bal, two-piece rear seal
47159814"168Two-piece seal blocks, internal balance
1012841212.75"15386-up, one-piece rear seal ext. balance
1012841314"16886-up, one-piece seal, extra thick, HD, ext bal
1012841414"16886-96, one-piece rear seal, ext. balance
1408876114"16889-up 350 HO, one-piece rear seal, ext. bal.
1408876512.75"15386-up, one-piece rear seal, ext. bal.
1408876714"16889-up 350 HO, one-piece rear seal, HD, ext. bal


We would like to thank everyone that has contributed to the data provided on this site.
This information has been gathered from several sources and has not been verified.