Big Block Chevy Engine Parts Identification

Engine Blocks | Cylinder Heads | BBC Cams | Crankshafts | Pistons | Intake Manifolds | Exhaust Manifolds | Balancer/Flywheel Info |

 

BBC Engine Block Casting Numbers

Casting #

Year

CID

HP/RPO/Comments/Applications

340220

1972-76

427

tall truck

345014

1974-86

454

truck

346236

1974-76

454

215, 2 bolt

359070

1974-90

454

truck

361959

1973-85

454

car & truck

364776

1968-84

427

tall truck

364779

1968-88

366

tall truck

473478

1968-84

427

tall truck

3782870

1968-76

427

tall truck

3855061

1965-67

396

 

3855961

1966-67

396

325, 360, 2 bolt

3855962

1965-66

396

360, 375, 425, 4 bolt

3855977

1965-67

366

tall truck

3866961

1966-69

396

Chevy, Chevy truck

3869942

1966-67

427

390, 425, 2&4 bolt

3873858

1966

396

375, 4 bolt

3902406

1967

396

325, 350, 375, 2&4 bolt

3902466

1965-67

396

 

3904351

1967

427

385, 390, 400, 425, 430, 435, 2&4 bolt

3904354

1966-67

366

tall truck

3916319

1968-85

366

tall truck

3916321

1968

427

385, 390, 400, 425, 430, 435, 2&4 bolt

3916323

1968

396

325, 350, 375, 2&4 bolt

3918319

1966-70

366

Chevy truck, GMC, tall truck

3925521

1968-85

366

tall truck

3928319

1969-73

366

GMC, tall truck

3935439

1968-69

427

335, 390, 400, 425, 430, 435, 2&4 bolt

3935440

1968-69

396

265, 325, 350, 375, 2&4 bolt

3937724

1968-85

366

tall truck

3937726

1968-84

427

tall truck

3955270

1969

427

335, 390, 400, 425, 430, 435, 2&4 bolt

3946052

1969

427

430 ZL-1, 4 bolt, aluminum

3955272

1969

396/402

265, 325, 350, 375, 2&4 bolt

3955274

1968-85

366

tall truck

3955276

1968-84

427

tall truck

3963512

1969-71

427

335, 390, 400, 425 COPO, 430, 435,

 

 

454

345, 360, 365, 390, 425, 450 2&4 bolt

3963513

1973-76

454

215

3965440

1968-69

396

 

3965449

1968-72

396

 

3965540

1968

396

 

3969854

1969-72

396/402

240, 265, 300, 325, 330, 350, 375,

 

 

454

360, 2&4 bolt

3969858

1968-84

427

tall truck

3999289

1972-78

454

215, 235, 240, 270, 2 bolt, car & truck

3999290

1972

402

240, 2 bolt

3999293

1968-85

366

tall truck

3999294

1968-84

427

tall truck

6272176

1968-76

366

Chevy, GMC, tall truck

6272177

1972

402

210

6272181

1973-76

427

tall truck


1401544

1975-87

454

truck


 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Big Block Chevy Cylinder Heads
Open vs. Closed Chamber - A good way to describe big-block heads is to categorize them as open or closed chamber. Closed-chamber cylinder heads have small combustion chamber volumes for high compression ratios, with even mildly domed pistons. Open-chamber designs are larger and provide lower compression ratios, so require a much larger piston dome to achieve the same compression as a closed-chamber head.

Use of either style head requires that the correct pistons are used, otherwise...

BBC Cylinder Head Casting Numbers
RECTANGULAR PORT - Valve size 2.19 intake, 1.88 exhaust

Casting

Years

CID

Chamber

CC

HP/RPO/Comments

3904392

1967

427

Closed

106.8

430, 435 L-88/L-89, 1.72 ex

3919842

1968-69

396

 

 

375 L-89

 

 

427

Closed

106.8

430, 435 L-88/L-89, 1.84 ex

3946074

1969-71

396,402

 

 

375 L-89, 427 430 L-88/ZL-1

 

 

454

Open

118.0

425, 465 LS-6/LS-7, round ex

10051128

1990-94

454

Semi Open

 

72cc, IP 400cc, bowtie, sym port

14011077

1989-94

454

Open

 

118.0cc, IP 295cc, replacement, C port

14044861

1989-94

454

Open

 

425, 105.0cc, IP 380cc, bowtie, W port

3856208

1965

396

Closed

108.9

375, 425 Z-16/L-37, 1.72 ex

3873858

1966-67

396

 

 

375 L-78

 

 

427

Closed

108.9

425 L-72, 1.72 ex

3904391

1965-67

396

 

 

375 L-78

 

 

427

Closed

106.8

425, 435 L-71/L-72, 1.72 ex

3919840

1967-69

396

 

 

375 L-78, 1.72.ex

 

 

427

Closed

109.0

425, 435 L-71/L-72, 425 COPO

3964291

1969-70

396/402

 

 

375 L-78, Intake Port 325cc

 

 

427

 

 

425, 435 L-71/L-72

 

 

454

Closed

 

450 LS-6, 108.0cc

3964292

1970

454

Closed

 

450 LS-6, 109.0cc

3994025

1971

454

Open

 

425 LS-6, 118.0cc

3994026

1971

454

Closed

 

425 LS-6, 118.0cc

6258723

1971

454

Open

 

425

6272990

1971-94

454

Open

 

425, 118.0cc, IP 325cc

14096188

1987-94

454

Open

 

425, 118.0cc, IP 325cc, replacement

14097088

1989-94

502

Open

 

GEN V, 118.0cc, IP 325cc, replacement

OVAL PORT - Valve size 2.06 intake, 1.72 exhaust

Casting

Years

CID

Chamber

CC

HP/RPO/Comments

330864

1970-81

366/427/454

Open

 

 

330865

1970-84

366/427/454

Open

 

 

336765

1973-84

427/454

Open

 

 

336781

1973-85

454

Open

 

113.0cc

343771

1968-85

366/427/454

Open

 

 

343772

1976-84

366/427/454

Open

 

 

343783

1975-78

454

Open

 

car & truck

346236

1975-87

454

Open

 

113.0cc

346238

1975-87

454

Open

 

113.0cc

353049

1970-73

402/454

Open

 

113.0cc

473328

1968-85

366

Open

 

 

3856206

1965-66

396

Closed

 

325 97.2cc

3856213

1966-70

366

Closed

 

truck

3872702

1966

396

 

 

325, 360 L-34/L-35

 

 

427

Closed

 

390, L-36 98.4cc

3876875

1966-70

427

Closed

 

truck

3904390

1966-67

396

 

 

325, 350 L-34/L-35

 

 

427

Closed

 

390, 400, L-36/L-68 98.4cc

3904393

1966-68

366

Closed

 

truck

3909802

1966-67

396

 

 

325, 350 L-34/L-35

 

 

427

Closed

 

385, 390, 400, L-36/L-68 100.9cc

3917215

1967-69

396

 

 

325, 350 L-34/L-35

 

 

427

Closed

 

335, 385, 390, 400 100.9cc

3917219

1966-70

366/427

Closed

 

truck

3931063

1969-70

396

 

 

325, 350 L-34/L-35

 

 

427

Closed

 

335, 385, 390, 400 100.9cc

3933148

1969

366/396

Open

 

2V/427 265 122.1cc car & truck

3933149

1969-70

427

Open

 

122.1 cc truck

3964280

1966-70

427

 

 

335, 385, 390, 400

 

 

454

Closed

 

345, 360, 390 LS-5

3964290

1969-70

396/402

 

 

325, 330, 350

 

 

427

 

 

335, 385,390, 400

 

 

454

Closed

 

345, 360, 390 LS-5 100.9cc

3965198

1969

396

 

 

truck

3975950

1968-70

366/427

Closed

 

truck

3986133

1970-85

366/427

Closed

 

truck

3986136

1970-84

366/427

Closed

 

truck

3993820

1971

402

 

 

300, 330 LS-3

 

 

454

Open

 

365 LS-5 113.0cc

3999241

1972

402

 

 

240, 300, 330 LS-3

 

 

454

Open

 

365 LS-5 113.0cc

6272292

1971

402

 

 

240, LS-3

 

 

454

Open

 

270, LS-5

10101136

1991-94

454

Open

 

truck

10121033

1978-88

454

Open

 

truck

12352783

1979-93

454

Open

 

truck

14025175

1983-93

454

Open

 

truck

14081044

1986-90

454

Open

 

truck

14092359

1986-89

427

Open

 

truck

14092360

1985-89

454

Open

 

truck

14101398

1986-90

454

Open

 

truck

 

 

BBC Camshaft Part Numbers

Part #

Year

Type

Lift

Dur @ .050 lift

Comments/Specs/RPO's/Apps

340282

 

Solid

.560I/.560E

.262I/.262E

121 deg overlap, competition-short track apps

353040

1973-74

Hyd

.440I/.440E

.210I/.210E

production Corvette

3863143

1965-71

Solid

.520I/.520E

.242I/.242E

See Note 1

3883986

1965-72

Hyd

.460I/.488E

.213I/.217E

See Note 2

3904362

1965-71

Solid

.520I/.520E

.242I/.242E

See Note 3

3925533

1965-69

Solid

.540I/.560E

.262I/.269E

133 deg overlap, 427 L-88, Reverse rotation

3925535

1965-69

Solid

.540I/.560E

.262I/.269E

133 deg overlap, 427 L-88, standard rotation

3959180

1969-70

Solid

.560I/.600E

.262I/.273E

135 deg overLap, 427 ZL-1, 454 LS-7

3994094

 

Solid

.600I/.600E

.286I/.286E

See Note 4

6272989

 

Hyd

.500I/.500E

.222I/.221E

121 deg overlap, marine grind or HP street

14096209

 

Hyd

.500I/.500E

.222I/.221E

121 deg overlap, marine grind or HP street (6272989)


Note 1: 80 deg overlap, 396 375hp L-78/L-89, 427 425/435hp L-71/L-72, 454 450hp LS-6, HP street
Note 2: 396 325/350hp L-34/L-35, 427 385/390/400hp L-36/L-68, 454 345/360/390hp LS-4/LS-5, good torque/HP
Note 3: 80 deg overlap, 396 375hp L-78/ L-89, 427 425/435hp L-71/L-72, 454 450hp LS-6, HP street
Note 4: 148 deg overlap, maximum power with F.I. or tunnel ram, Can Am

 

BBC Crankshaft Part Numbers

Casting #

Year

CID

Comments/Specs/RPO's/Apps

330570

 

427

truck,1053,forging number 6223

336782

1970-74

454

with automatic transmission

3879621

1967

427

L-88, See Note 1

3882841

1965-71

396

See Note 2

3882842

1965-69

427

forged, cross drilled, balanced for 11:1 CR

3882849

1966-69

427

 

3887114

1965

396

tufftrided, 5140

3963521

 

454

4 in stroke, 5140, raw forged

3963523

1970-71

454

LS-6, See Note 3

3963524

1970-71

454

LS-7, See Note 4

3965746

1965-69

430

raw forged, semi finished, 3.4-3.8 stroke

3965753

1970-72

495

raw forged, semi finished, 3.9-4.25 stroke, 5140

3967811

1968-69

427

L-88/ZL-1, See Note 5

3975945

1970

454

with manual transmission

3993804

 

427

raw forged, 3.75 stroke, 5140

3993878

1971-72

454

LS-6

10051169

 

454

raw forged, 4340, 3.75-4.25


Note 1: L-88, with 3/8 in bolt rods, balanced for 12.5:1 CR, tufftrided, cross drilled
Note 2: forged, cross drilled, 3.76 stroke, tufftrided, balanced for 11:1 CR
Note 3: 1053, tufftrided, cross drilled, balanced for 9.25:1 or 11.25:1 CR, forging number - 3520 and 7416
Note 4: 4 in stroke, HD, 5140, LS-7, balanced for 12.5:1 CR, tufftrided, cross drilled
Note 5: tufftrided, 5140, with 7/16 in bolt rods, tufftrided, cross drilled, forging number - 7115

 

BBC Exhaust Manifold Casting Numbers

Cast #

Years

Side

CID

Applications

329225

1973-76

LH

454

 

353028

1973-76

LH

454

 

353030

1973-76

LH

454

police

3856297

1965

LH

396

325

3856301

1965

LH

396

425 Corvette

3856302

1965

RH

396

425 Corvette

3856306

1965

RH

396

325

3857297

1965

LH

396

325

3868874

1965-66

RH

396

325, 360, 375 Z-16

3869925

1965

LH

396

375 Z-16

3872770

1966

RH

396

 

3880827

1966-69

LH

427/454

Corvette

3880828

1966-72

RH

427/454

Corvette

3880869

1970-72

LH

454

Corvette

3883999

1966

LH

396

325, 360, 375

3884504

1966-67

RH

396/427

325, 385, 390

3892307

1966-67

LH

396/427

325, 390

3902401

1967

LH

396

 

3904399

1966

LH

396

 

3909879

1967-70

LH

396/427

COPO/454 325, 350, 375, 425, 430

3909880

1967

RH

396

325, 350, 375

3914613

1968-70

LH

396/427

265, 325, 335, 345, 390, 425

3916178

1968-70

RH

396/427

COPO/454 325, 350, 375, 425, 430

3969869

1970-74

LH

454

Corvette

3989310

1971-72

RH

402/454

 

3989343

1971-72

LH

402/454

 

3994045

1973-75

LH

454

police

 

 

 

 

 

 

BBC Intake Manifold Casting Numbers
ALUMINUM RECTANGULAR PORT - Holley 4V

Casting

Years

CID

HP/RPO/Config

3866963

1965

396

375, 425 L-37

3885069

1966-68

396

375 L-78

 

 

427

425 L-72

3886093

1967

427

430 L-88

3894374

1967

427

435 3x2 L-71

3894382

1967

427

400 3x2 L-68, oval port

3919849

1968

427

390 L-36, oval port, Qjet

3919850

1968

427

400 3x2 L-68, ovat port

3919852

1968

427

435 3x2 L-71

3919878

1968

396

375 L-78

 

 

427

425 L-72

3933163

1968-69

396

375 L-78/L-89

 

 

427

425 copo

3933198

1968-69

427

430 L-88/ZL-1

3937793

1968

427

390 L-36, oval port, Qjet, Late

3937795

1969

427

400 3x2 L-68, oval port

3937797

1969

427

435 3x2 L-71

3947801

1969

427

390 L-36, oval port, Qjet

3963569

1970-71

396/402

375 L-78/L-89

 

 

454

LS-6, lowrise

3967474

1971

454

425

6269318

1972

454

 

BBC Intake Manifold Casting Numbers
IRON OVAL PORT - Rochester Q-jet 4V

Casting

Years

CID

HP/RPO/Config

336789

1974

454

235, 270

346242

1975

454

215

353015

1973

454

215, 245

393841

1973-75

454

215

3856289

1965-66

396

325 L-35

3866948

1966-67

396

325, 360 L-34/L-35

 

 

427

390, Holley

3883948

1966-68

396

325 L-35

 

 

427

385, 390 L-36

3931067

1969

396

325 L-35

 

 

427

335, 390 L-36

3952900

1969

396

265 2V

3955287

1970-71

402

300, 330, 350 LS-3

 

 

454

360, 365, 390

6263753

1972

402

240 LS-3

 

 

454

240, 270



Creation Date: 1/30/1998
Last revision: 12/2/1998 - Reformatting head CC info
Author: MadMike Maciolek
Email: iracez28@stc.net
Email: m_maciolek@vmsnet.enet.dec.com

 

 

 

 

 

Introduction



When I started this Web site back in 1996 there wasn't much information about big block Chevy engines on the Web, so I decided to create this page. I don't claim to be an expert about engines and am simply sharing some of the information that I've compiled from many different sources. Eventually I'd like to be able to provide some good technical information, especially about cylinder heads, and also make the casting number lists as complete as possible for those of us that are hunting around for old blocks, cranks and heads.

I'd also like to be able to provide more information on is the maximum bore size that can be reliably used on various big blocks. I've heard of people going as much as .125" over stock on some early 396 blocks, although you'd certainly want to check the wall thickness of the block with a sonic thickness tester before taking one out that far. Aftermarket pistons are available for .090" 454s and in some cases as much as .125" over.

 

 


Preparing an Engine Block for Machining

 




The first step in preparing a block is to get it clean. Begin by scraping off any gasket adhesive and the worst of the built-up grease. Even with all of the right tools, tearing down a block can test your patience, and I recommend having the shop that's going to clean the block also remove all of its plugs. If you want to do it yourself, here's how:

All of the freeze plugs need to be removed with a hammer and punch. Pull them out with pliers before you knock them all the way into the water jackets. (Otherwise, since they're non-magnetic, you'll have to keep moving the block around until the plug lands over one of the holes for them, getting a grip on it with the pliers, and pulling it out. This is how we learn humility.) Now out come the oil gallery plugs, which have weird square female heads that even with the proper Snap-On tool still often have to be carefully drilled out.

The lifter galley and the entire inside of the block were then fully deburred to remove all of the "pockets" where casting sand and metal may come loose, something I'd suggest to anyone building an engine. I used a die grinder with emery cloth cartridges, which makes it possible to reach into all of the block's contours.

Once you've got the block completely bare (except for the leaving main caps in the right places) and deburred, you're ready to call the local engine rebuilder and find out when they're changing their solution so you can get it in their tank when it's not full of sludge. The shop I took the block to for it to be hot tanked let me bring it in right after they changed their tank's solution on a Friday afternoon, and we lowered it in and let it spend the whole weekend thinking over how badly it wanted to hang onto the last of its grease. Monday morning I was there early to hoist it out of the tank, and spent a full fifteen minutes running water all over it and through all of the passages, ending up with something that was clean. Then I got an air line and got the entire block completely dry, and it was ready for machining.




 

 

 

 

 

Big Block Chevy Bore and Stroke

 





Engine Size

Stock Bore

+.060"-over

Stock Stroke

366

3.935"

3.995"

3.760"

396

4.094"

4.154"

3.760"

402

4.125"

4.185"

3.760"

427

4.250"

4.310"

3.760"

454

4.250"

4.310"

4.000"

Mark 5 502 Mark 6

4.468"

4.530"

4.000"




454 Engines

3.760"

4.000"

4.250"

4.500"

4.750"

4.875"

Stock bore = 4.250"

427"

454"

482"

511"

539"

553"

Bored .030" = 4.280"

433"

460"

489"

518"

547"

561"

Bored .060" = 4.310"

439"

467"

496"

525"

554"

569"

Bored .090" = 4.340"

445"

473"

503"

533"

562"

577"

Bored .100" = 4.350"

447"

476"

505"

535"

565"

580"

Bored .125" = 4.375"

452"

481"

511"

541"

571"

586"




502 Engines

3.760"

4.000"

4.250"

4.500"

4.750"

4.875"

Stock bore = 4.468"

472"

502"

533"

564"

596"

611"

Bored .032" = 4.500"

478"

509"

541"

573"

604"

620"

Bored .062" = 4.530"

485"

516"

548"

580"

612"

629"

Bored .092" = 4.560"

491"

523"

555"

588"

621"

637"




Brodix, Dart & Merlin Blocks

4.000"

4.125"

4.250"

4.375"

4.500"

4.625"

4.750"

4.875"

5.000"

4.500" bore

509"

525"

541"

557"

572"

588"

604"

620"

636"

4.530" bore

515"

532"

548"

564"

580"

596"

612"

628"

645"

4.560" bore

523"

539"

555"

572"

588"

604"

621"

637"

653"

4.590" bore

530"

546"

563"

579"

596"

612"

629"

645"

662"

4.600" bore

532"

548"

565"

582"

598"

615"

632"

648"

665"

4.625" bore

537"

554"

571"

588"

605"

622"

638"

655"

672"




To calculate the displacement of an eight-cylinder engine: Bore x Bore x Stroke x 6.2832

Cubic inches x 16.387 = cubic centimeters

Cubic centimeters x .061 = cubic inches


The Five Largest Bonneville Salt Flats Engine Classes

AA / Fuel and AA / Gas

501 cubic inches and over

8.21 liters and over

A / Fuel and A / Gas

440 to 500 cubic inches

7.21 liters to 8.19 liters

B / Fuel and B / Gas

373 to 439 cubic inches

6.11 liters to 7.19 liters

C / Fuel and C / Gas

306 to 372 cubic inches

5.01 liters to 6.10 liters

D / Fuel and D / Gas

261 to 305 cubic inches

4.27 liters to 5.00 liters




BBC Engine Block Casting Numbers

Number

Size

Rated Horsepower

Production

Main Caps

340220

427

 

1968-1976

Four-bolt (tall-deck)

346236

454

 

1975

Two-bolt

361959

454

 

1978-1987

Two-bolt or four-bolt

364776

427

 

1974-1976

Four-bolt (tall-deck)

364776

454

 

1977-1990

Four-bolt (tall-deck)

364779

366

 

1968-1990

Four-bolt (tall-deck)

473478

427

 

1977-1990

Four-bolt (tall-deck)

1014183

366

 

1991-1992

Four-bolt (tall-deck)

3855961

396

325 and 360

1966

Two-bolt

3855962

396

360, 375, and 425

1965-1066

Two-bolt or four-bolt

3869942

427

390 and 425

1966

Two-bolt or four-bolt

3873858

396

375

1966

Four-bolt

3902406

396

325, 350, and 375

1967

Two-bolt or four-bolt

3904351

427

425

1967

Four-bolt

3916321

427

425 and 435

1968

Four-bolt

3916323

396

325, 350, and 375

1968

Two-bolt or four-bolt

3935439

427

435

1968 and 1969

Four-bolt

3935440

396

350 and 375

1969

Two-bolt or four-bolt

3937724

366

 

1968-1976

Four-bolt (tall-deck)

3955272

396

325, 350, and 375

1969

Two-bolt or four-bolt

3955272

402

325, 350, and 375

1969

Two-bolt or four-bolt

3955274

366

 

1968-1976

Four-bolt (tall-deck)

3955276

427

 

1968-1973

Four-bolt (tall-deck)

3963512

454

360, 375, 425, and 460

1968-1971

Two-bolt or four-bolt

3969852

366

 

1968-1976

Four-bolt (tall-deck)

3969854

402

360 and 375

1972

Two-bolt

3969854

454

360 and 375

1972

Two-bolt

3969858

427

 

1968-1973

Four-bolt (tall-deck)

3999289

454

 

1972-1979

Two-bolt

3999290

402

240

1972

Two-bolt

3999293

366

 

1968-1976

Four-bolt (tall-deck)

3999294

427

 

1968-1973

Four-bolt (tall-deck)

10114182

454

 

1992

Four-bolt (tall-deck)

10114184

427

 

1991-1992

Two-bolt or four-bolt

14015445

454

 

1978-1987

Two-bolt or four-bolt





 


BBC Oval Port Cylinder Head Casting Numbers

 

Number

Engine Size

Year

Combustion Chambers

336781

454

1973-1985

Open chamber

346236

454

1975-1978

Open chamber ("peanut" ports)

353049

454

1970-1973

Open chamber

3872702

396 and 427

1966

Closed chamber

3904390

427

1966

Closed chamber

3904390

427

1966

Closed chamber

3909802

396 and 427

1966-1967

Closed chamber

3917215

396 and 427

1966-1969

Closed chamber

3931063

396 and 427

1966-1969

Closed chamber

3964280

427 and 454

1966-1970

Closed chamber

3964290

427 and 454

1966-1970

Closed chamber

3993820

402 and 454

1970-1971

Open chamber

3999241

402

1970-1972

Open chamber

6272292

402 and 454

1971

Open chamber





 


BBC Rectangular Port Cylinder Head Casting Numbers

 

Number

Engine Size

Year

Combustion Chambers

3856208

396

1965

Closed chamber

3904391

396 and 427

1965-1967

Closed chamber

3919840

396 and 427

1965-1969

Closed chamber

3964291

396, 402, and 427

1965-1970

Closed chamber

3964292

454

1970

Closed chamber

3994025

454

1971

Open chamber

3994026

454

1971

Open chamber

3996074

454

1971

Open chamber

6258723

454

1971

Open chamber

6272990

454

1971

Open chamber





 

 

 

 

 

 

 

 

 

 

Big Block Chevy Valve Covers

 

Here are some of the cast aluminum big block Chevy valve covers that I've collected over the years.



Among the very first aftermarket valve covers for the 396 and 427 engines were these from Cal Custom, in Gardena, California. These were die-cast parts that were high-quality and very popular. The early versions say "Gardena, Calif. No. 40-2100". The later versions say "Carson, Calif. No. 4701-4028". The only difference is in the logo, which is on the breather knock-out.

These were one of very few aftermarket valve covers to have oil drippers located above the rocker arms. Although Cal Custom made valve covers for many different engines, the big block Chevy version was the only one that I know of, and the only aftermarket big block Chevy valve covers that I know of other than Edelbrock, that had drippers.

 

Edelbrock has made several different styles of cast aluminum valve covers for the big block Chevy, and this pair is one of the earliest.

Another cast-aluminum Edelbrock valve cover for big block Chevy engines was similar to these but with a curved Edelbrock logo.

A third version was essentially a Mickey Thompson valve cover with the Edelbrock name on it, along with a mirror-imaged Chevy bow-tie logo.


 

Error! Bookmark not defined.These sand-cast Keith Black valve covers were made in the late 1970s and early 1980s.

Although KB has made several styles of their own breathers, the pair shown here has been fitted with aftermarket "no-name" breathers.


 

 

 

 

 

 

 

 

 

 

 

 

This is a rare pair of die-cast aluminum valve covers that were made in the 1990s by Advance Marine in Monrovia, California.

The tops of these are angled like many Ford valve covers.

The Advance Marine valve covers were good die castings, with clearance for virtually any rocker arms.







 


More Big Block Chevy Engine Resources

 





Big Block Chevy Engine Parts Identification
Mike Maciolek has put together a site that is packed with information about engine codes for both rats and mice.
http://www.nastyz28.com/bbcmenu.html

Big Block Chevy Engine Projects
This page describes the engines that I'm building for my roadster and for my coupe.
http://www.roadsters.com/power/

MorTec, Inc.
The creators of "Engine Math For The Rest Of Us" software provide a great deal of information on their site, including Chevy bore and stroke, casting numbers and their locations, and crank journal sizes.
http://www.mortec.com/



http://www.roadsters.com/