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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

BBC Head Casting Numbers

Click Header to Sort

Casting Number

Year

Port Type

Chamber Type

C.I.D.

Chamber Size

Notes

330864

68-84

oval

OPEN

396, 402, 366T, 427T, 454

 

 Truck

330865

68-84

oval

OPEN

396, 402, 366T, 427T, 454

 

 Truck

330866

68-78

oval

OPEN

366T, 427T

 

 

330867

68-73

oval

OPEN

427T

 

 

336765

68-78

oval

OPEN

427T

 

 

336768

73-76

oval

OPEN

427T

 

 

336781

73-85

oval

OPEN

454

118cc

 256/114cc ports

343771

68-86

oval

OPEN

366T, 427T, 454

 

 

343772

68-86

oval

OPEN

366T, 427T, 454

 

 

343783

70-76

oval

OPEN

454

 

Truck

346236

75-87

oval

OPEN

454

120cc

 225/116cc ports

352625

70-76

oval

OPEN

454

 

Truck

353049

73-84

oval

OPEN

454

122cc

 255/119cc ports

366765

74-78

oval

OPEN

427T

 

 

473328

68-69

oval

OPEN

366T

 

 

3856206

65-66

oval

CLOSED

396

37cc

 

3856208

65

rect

CLOSED

396/425hp, 396/375hp

109cc

"Z-16" Chevelle

3856213

66-82

oval

CLOSED

366T, 427T

 

 

3856260

68

oval

CLOSED

396

 

 Truck

3872702

65-66

oval

CLOSED

396, 427

98cc

 

3873858

65-67

rect

CLOSED

396, 427

109cc

 

3876875

77-85

oval

OPEN

427T

 

 

3904390

67

oval

CLOSED

396, 427

98cc

 

3904391

67

rect

CLOSED

396, 427

107cc

 

3904392

67

rect

CLOSED

427

107cc

 Aluminum L88 L98

3904393

68-76

oval

OPEN

366T

 

 

3908952

67

oval

OPEN

427

 

 "M.Truck" Marine

3909802

67

oval

CLOSED

396, 427

101cc

 

3917215

67-68

oval

CLOSED

396, 427

101cc

 

3917219

68-85

oval

OPEN

366T, 427T

 

 

3919840

67-69

rect

CLOSED

396, 427

107cc

 

3919842

68-69

rect

CLOSED

396, 427

107cc

 Aluminum L88, L89

3931063

68-69

oval

CLOSED

396, 402, 427

101cc

 

3933148

69-84

oval

OPEN

366T, 427T

112cc

'69 396/265hp

3933149

68-76

oval

OPEN

427T

122cc

 

3935401

68-76

oval

OPEN

427T

 

 

3946074

69&71

rect

OPEN

427

118cc

Aluminum ZL1 '69 L88  "round exhaust port"

3964290

69-70

oval

CLOSED

396, 402, 427, 454

101cc

Large or small hex spark plugs used

3964291

69-72

rect

CLOSED

396, 402, 427, 454

109cc

Large or small hex spark plugs Used crate motor usage in years after 1970.

3965198

68-69

oval

CLOSED

396

 

Truck

3975950

68-70

oval

OPEN

396, 402, 366T, 427T, 454

 

Truck

3986133

68-85

oval

OPEN

366T, 427T, 454

 

Truck

3986135

69-73

oval

OPEN

366T, 427T

 

 

3986136

68-84

oval

OPEN

366T, 427T, 454

 

Truck

3993820

71

oval

OPEN

402

113cc

 255/114 ports

3993820

71-84

oval

OPEN

454

113cc

 Passenger and Trucks 255/114 ports

3994026

71

rect

OPEN

454

118cc

LS6

3999241

72

oval

OPEN

402, 454

113cc

 

6272292

70-78

oval

OPEN

402, 454

 

 

6272990

70-up

rect

OPEN

454

118cc

Service replacement used on some MKIV crate engines

10045427

 

rect

 

 

91cc

Pontiac/Chevy Aluminum Large Port Race

10049875

 

rect

 

 

 

Pontiac/Chevy Aluminum Small port Race

10051128

 

rect

 

 

72cc

Bowtie  Aluminum Symmetrical ports

10051129

 

rect

 

 

 

Bowtie  Aluminum "raw" casting  Symmetrical ports

10052902

 

oval

OPEN

 427T

 

MkIV

10101140

91-up

oval

CLOSED

366T, 427T

 

Gen.V

10114156

91-up

oval

OPEN

454

118cc

Gen.V & VI

10141279

96-up

oval

CLOSED

 

100cc

Vortec 7400

10487052

77-90

oval

OPEN

366T

 

 

12363391

96-up

oval

OPEN

 

110cc

Bowtie Aluminum Signature Series fits MKIV Gen.V Gen.VI

12363401

96-up

rect

OPEN

 

118cc

Bowtie Aluminum Signature Series fits MKIV Gen.V Gen.VI

12558162

01-up

oval

CLOSED

496

 

Gen,VII Vortec8100 8.1L truck

12560241

98-up

oval

CLOSED

 

100cc

Vortec 7400

12562932

91-95

oval

OPEN

 

118cc

Gen.V truck crate motor

12562933

91-95

oval

OPEN

 

118cc

Gen. V

12562934

00-up

rect

OPEN

502

 

Gen.VI Marine

14011077

69-up

rect

OPEN

 

118cc

Aluminum fits MKIV "C-port"  also sold as a "solid" head

14044861

84-96

rect

 

 

105cc

Bowtie Aluminum  MkIV "raised runners"  1st design

14044861

96-up

rect

 

 

115cc

Bowtie Aluminum Signature Series  fits MKIV Gen.V Gen.VI "raised runners" 2nd design

14044861

84-96

rect

 

 

 

Bowtie Aluminum MkIV "raw" casting of "861" MKIV 1st design

14081045

78-87

oval

OPEN

454

 

 

14081052

85-87

oval

OPEN

366T, 427T, 454

 

Truck Marked "HiPerf"

14092359

86-90

oval

OPEN

366T, 427T

 

Marked "HiPerf"

14092360

86-90

oval

OPEN

454

 

Truck  "peanut" round ports

14096188

70-71

rect

OPEN

454

116cc

service replacement also used on later Mark IV LS-6 LS-7 and 454 HO crate motors

14097088

91-up

rect

OPEN

454/502 HO

118cc

Gen. V

24502585

97

rect

 

 

 

Aluminum Olds/Chevy DRCE 2  "Pro Stock" for blocks with 4.900" bore spacing

25534404

04

rect

 

 

 

Aluminum Olds/Chevy DRCE 3 "Pro Stock"  for blocks with 4.900" bore spacing

T = Tall deck Oval includes both "peanut" (also called "round") ports and large oval ports


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.