HEAD CASTING MARK vs CASTING NUMBER:

HEAD MARKING

CASTING #

HEAD MARKING

CASTING #

3636 839

3773 012

3713 569

3774 682

3748 772

3814 480

3767 460

3837 065

3769 460 A

836 839

 

 

 

 

3755 537

 

3932 441

 

3998 991

 

3703 523

3774 692

3713 358

3795 896

3725 306

3836 842

3731 262

3884 520

3748 770

 

3755 538

 

3755 550

 

3740 997

 

3743 056

 

3774 684

 

3882 454

 

340 292

 

340 292 RH

 

3917 290

 

3927 185

3774 684

 

 

 

 

 

3986 388

HEAD MARKING

CASTING #

HEAD MARKING

CASTING #

3782 461

 

3890 462

 

3917 264

 

3917 291a

 

3927 186

 

3927 187

 

3990 462

 

3991 492

 

3991 492 SR

Aluminum Head 1959

Photo Of Original

3772 895 B [Aluminum]

332 882

 

333 882

 

462 624

 

462 624 SR

3970 126

 

3998 920

 

3947 041

 

376 450

 

HEAD MARKING

CASTING #

HEAD MARKING

CASTING #

330 545

 

3973 493

 

14014 415

 

458 642

 

3986 339

 

3998 997

 

3873 487

 

917 291

 

3973 487

 

3998 993

 

3998 993 CM

 

14022 601

 

 

 

 

3986 388

 

354 434

 

367 450

 

14014 416

 

3998 993

 

468 642

 

10051 101 RH

 

10239 906 SR

 

14011 034 BT

 

24502 559

 

10088 113 SR

10134 363

 

14011 049 BT

 

 

 

14022 601

 

 

 

93417 369

 

 

 

A = First Snall Block Head

CM - Crate Motor

 RH = Race Head

B = First Aluminum head

GW- GoodWrench

 SR = Service Replacement

BT = Bow Tie

OC - Over Counter

 VT = Vortec

100516

Special Note: Chevy used Orange for there engine color from 1955 into the Mid 70's from the Mid 70's to late 80's they used Blue. After the 80's the color changed to Black. I have heard of a green and yellow engines in the 50's

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