Chevrolet Block Casting Number Reference
Number Engine
M-Blts Year
Description
Small blocks
140029 350
2
80-84
330817 400
2
72-80
3 frz. plugs
355909 305
2
75
Nova,
Monza
360851 262
2
75-76
Monza
361979 305
2
78-79
366245 350
2
78-79
Dipstick in oil pan
366287
4
Bowtie, Alm, siamesed
2 pc. seal,4.00-4.150 bores
2.45 Mains Strt. Nod. Iron Caps
366299
4
Bowtie, Alm., 4.00 bores
Nod. Iron Splayed Caps, Wet Sump
376450 350
4
78
389257 302
2
67
393288 283
2
65-67
460703 350
4
78
460776 305
2
78-79
460777 305
2
78-79
460778 305
2
78-79
471511 267
2
79-82
3556519 283
2
58-61
3703524 265
2
55
No
oil filter
3720991 265
2
56-57
3731548 283
2
57
No
side motor mounts
3737739 283
2
58-64
3756519 283
2
58-62
3782870 327
2
62-67
3789817 327
2
62-67
3789935 283
2
61-64
3790721 283
2
62-64
Chevy II recess oil
filter boss
3791262 327
2
62-67
Chevy II recess oil
filter boss
3792563 327
2
65
3792582 283
2
64-65
3794226 283
2
58-63
3794460 327
2
68-69
Large Journal Mains
3814660 327
2
68-69
3830944 327
2
63
300
HP
3834810 283
2
64-66
3834812 283
2
62-63
3837739 283
2
58-62
3849852 283
2
64-68
3849935 283
2
65-67
3852174 327
2
62-64
3858174 327
2
64-66
3858180 327
2
64-67
3858618 350
2
68-76
3862194 283
2
65-67
Chevy II recess oil filter
boss
3864812 283
2
62-64
3892657 302
2
67
Z-28
Camaro
3892657 327
2
67
3896944 283
2
67
3903352 327
2
67
3914636 307
2
68
3914653 307
2
67-73
3914660 327
2
68
3914678 302
2
68
Z-28
Camaro
3914678 327
2
68
3914678 350
2
68
3932371 307
2
69-73
3932373 307
2
68-73
3932386 302
4
69
Z-28
Camaro
3932386 350
4
69
3932388 350
4
69
3951509 400
4
70-71
3951509 400
2
74-75
2 frz. plugs
3951511 400
4
70-71
3956618 302
4
69
Z-28
Camaro
3956618 327
2
68-69
3956618 350
2 or 4
69
3956632 307
2
69
3959512 327
2
62-63
3970010 302
4
69
Z-28
Camaro
3970010 350
2 or 4
69-80
3970014 350
2 or 4
72
3970020 307
2
70-73
3970041 327
2
65-67
4715511 305
2
80
6259425 350
2
69-76
10036033 350
4
Crate motor, 2 pcs seal, Hecho En Mexico
10051182
2
Bowtie, non siamesed, 3.75 bore
10051184
2 or 4
Bowtie, siamesed, 4.00-4.160 bore
10054727 350
4
Made in Canada
10066036 350
4
Crate Motor, 2 pcs. seal, Hecho En Mexico
10090511 350
2
90
LT-5, ZR1 Vett, 385 HP
10125327 350
4
92-up
Gen. II LT1 reverse
flow cooling
10125327 350
4
96-up
Gen II LT4 reverse flow
cooling
10134996
4
Bowtie, Alm, 4.125 bore 2.65 Mains
10153558 350
2
91-92
LT5, ZR1 Vett, 375 HP
10199001 350
4
93-95
LT5, ZR1 Vett, 405 HP
14010201 305
2
80-84
14010202 305
2
80-84
14010203 305
2
80-84
14010207 350
2 or 4
80-85
14010209 350
4
80-85
14010280 267
2
79-82
14011148 350
Roller Cam, 1 pcs seal
14016376 267
2
79-82
14016379 350
2
77-79
14016381 305
2
80-84
14016383 305
2
80-85
14088526 350
Roller Cam 1 pcs seal
14088548 350
4
86-88
Flat tapped 1 pcs seal
14088551 305
2
86-87
Flat tappet 1 pcs. seal
14093627 305
2
87-91
Roller Cam 1 pcs. seal
14093638 350
2 or 4
87-95
Roller or Flat 1 pcs. seal
14101148 350
4
87-90
1 pcs seal
14102058 305
2
87-91
Roller Cam, 1 pcs seal
14316379 350
78-81
1 & 2 pcs. seals
Big Blocks
340220 427
68-76
Truck
361959 454
73-75
Chevelle
361959 454
73-76
Pass
361959 454
75-85
Truck LD
364776 427
68-84
Truck HD
364779 366
68-88
Truck HD
473478 427
68-84
Truck HD
3732811 348
58
Pass
3751872 348
58
Pass
3755011 348
59-61
Pass
3771705 348
59-61
Truck & Replacement
3782870 427
68-76
Truck
3788068 409
62
Pass
3795623 409
61
Pass
3798962 348
62-65
Truck & Replacement Has X
on side
3830814 409
63
Pass
Has X on side
3844422 409
64
Pass
Has X on side
3855961 396
2
65-67
Pass, 325HP
3855961 427
2 or 4
66
Corvette, 390-425 HP
3855961 396
2 or 4
66
Chevelle
325,360,375HP
3855961 396
2 or 4
68-69 Truck
LD
3855962 396
2
68-69
Pass, Chevelle
3857655 348
62-65
Truck
3857656 409
65
Pass
3869942 427
66
Pass,
Corvette, 390-425HP
3902406 396
2 or 4
67
Chevelle
3902466 396
66-69
Pass, Chevelle, Nova, Chevelle,
Camaro
3904351 427
67
Pass,
Corvette 385-390-400-430-435HP
3904354 366
66-67
Truck
3916319 366
68-85
Truck HD
1916321 427
2 or 4
67
orvette,
Pass
3916323 396
2 or 4
68
Comaro,
325,350,375HP
3916323 396
2 or 4
68
Chevelle,
325,350,375HP
3916323 396
2 or 4
68
Nova,
325,350,375HP
3916323 396
2
68
Pass,
325,350,375HP
3925521 366
68-85
Truck HD
3935439 427
68
Corvette,
430-435HP
3935440 396
68
Pass,
Chevelle, Camaro, Nova
3937724 366
68-85
Truck HD
3937726 427
68-84
Truck HD
3955270 427
69
Corvette
390-400-430-435HP
3955270 427
69
Pass,
385-425HP
3955272 396
68-69
Truck LD
3955272 396
69
Pass,
Chevelle, Camaro, Nova
3955272 396
70-72
Truck LD
3955274 366
68-85
Truck HD
3955276 427
68-84
Truck HD
3963512 427
68-69
Pass, Chevelle, Camaro, Corvette
385-425HP
3963512 454
70
Pass,
Corvette, 360,390HP
3963512 454
70
Chevelle
LS6, 450 HP
3963512 454
70-71
Pass, Chevelle, Monte Carlo
3963512 454
71
Corvette
365,425 HP
3963513 454
73-76
Chevelle, Pass
3968854 396
68-69
Truck, Pass, Chevelle, Nova,
Camaro
3968854 402
70-72
Truck, Pass, Chevelle, Nova,
Camaro
3969851 366
68-85
Truck HD
3969854 402
69-72
Pass, Chevelle, Camaro, Nova,
Truck
3969858 427
68-84
Truck HD
3995623 409
61
Pass
3999289 454
72-79
Pass, Corvette,
Chevelle, Truck
3999290 396
68-69
Truck LD
3999290 400
70-72
Truck LD, Pass,
Chevelle, Nova, Camaro
3999290 402
68
Pass,
Chevelle, Camaro, Nova
3999293 366
68-85
Truck HD
3999293 454
73-75
Pass, Chevelle
3999294 427
68-84
Truck HD
6272177 402
70-73
14015445 454
75-87
Truck LD