Casting Number
|
Size
|
Year
|
Main Bolts
|
Notes
|
140029
|
350
|
80-84
|
2
|
|
330817
|
400
|
72-80
|
2
|
|
355909
|
262
|
75
|
2
|
|
355909
|
305
|
76-79
|
2
|
|
360851
|
262
|
75-76
|
2
|
Monza V-8
|
361979
|
305
|
77-79
|
2 or 4
|
Some Canadian
assembled heavy duty blocks have 4-bolt main caps
|
366245
|
350
|
78-79
|
4
|
Bowtie
|
366286
|
|
|
4
|
Bowtie siamesed straight nodular iron main caps 2-piece
seal 4.00-4.150"bores 2.45" main journals
|
366298
|
|
|
4
|
Bowtie Aluminum billet
main caps 3.398" bore with sleeves two piece rear main seal.
|
366299
|
|
|
4
|
Bowtie Aluminum
nodular iron splayed caps wet sump 4.00" bore
|
389257
|
302
|
67
|
2
|
|
393288
|
283
|
65-67
|
2
|
|
460703
|
350
|
78
|
4
|
|
460776
|
305
|
78-79
|
2
|
|
460777
|
305
|
78-79
|
2
|
|
460778
|
305
|
78-79
|
2 or 4
|
�some Canadian assembled heavy duty truck
blocks have 4-bolt main caps
|
471511
|
267
|
79-82
|
2
|
|
3556519
|
283
|
58-61
|
2
|
|
3703524
|
265
|
55
|
2
|
No oil filter
|
3720991
|
265
|
56-57
|
2
|
|
3731548
|
265
|
57
|
2
|
No side motor mounts
|
3731548
|
283
|
57
|
2
|
No side motor mounts
|
3737739
|
283
|
58-64
|
2
|
|
3756519
|
283
|
58-62
|
2
|
|
3782870
|
327
|
62-67
|
2
|
|
3789817
|
283
|
62-64
|
2
|
|
3789817
|
327
|
62-67
|
2
|
|
3789935
|
283
|
61-64
|
2
|
|
3790721
|
283
|
62-64
|
2
|
Chevy II recessed oil
filter boss
|
3790721
|
327
|
65-66
|
2
|
Chevy II recessed oil
filter boss
|
3791362
|
327
|
62-67
|
2
|
Chevy II recessed oil
filter boss
|
3792563
|
327
|
65
|
2
|
|
3792582
|
283
|
64-65
|
2
|
|
3794226
|
283
|
58-63
|
2
|
|
3794460
|
327
|
62-64
|
2
|
|
3830944
|
327
|
63
|
2
|
|
3834810
|
283
|
64-66
|
2
|
|
3834812
|
283
|
62-63
|
2
|
|
3837739
|
283
|
58-62
|
2
|
|
3849852
|
283
|
57-66
|
2
|
|
3849935
|
283
|
65-67
|
2
|
|
3858174
|
327
|
64-67
|
2
|
|
3858180
|
327
|
64-67
|
2
|
|
3858618
|
350
|
68-76
|
2
|
|
3862194
|
283
|
65-67
|
2
|
Chevy II recessed oil
filter boss
|
3862812
|
283
|
62-64
|
2
|
|
3892657
|
302
|
67
|
2
|
Z-28 Camaro
|
3892657
|
327
|
67
|
2
|
|
3892657
|
350
|
67
|
2
|
Camaro
|
3896944
|
283
|
66-67
|
2
|
|
3896948
|
283
|
66-67
|
2
|
|
3903352
|
327
|
67
|
2
|
|
3914636
|
307
|
68
|
2
|
|
3914638
|
307
|
68
|
2
|
|
3914653
|
307
|
68-73
|
2
|
|
3914660
|
327
|
68
|
2
|
|
3914678
|
302
|
68
|
2
|
Z-28 Camaro
|
3914678
|
327
|
68
|
2
|
|
3914678
|
350
|
68
|
2
|
|
3931174
|
307
|
68
|
2
|
Truck
|
3932371
|
307
|
69-73
|
2
|
|
3932373
|
307
|
68-73
|
2
|
|
3932386
|
302
|
69
|
4
|
Z-28 Camaro
|
3932386
|
327
|
69
|
2
|
|
3932386
|
350
|
69
|
2 or 4
|
|
3932388
|
327
|
69
|
2
|
|
3932388
|
350
|
69
|
2 or 4
|
|
3933180
|
327
|
68-69
|
2
|
|
3951509
|
400
|
70-71
|
4
|
|
3951509
|
400
|
74-80
|
2
|
|
3951511
|
400
|
70-73
|
4
|
Some replacement
blocks had 2-bolt main caps
|
3956618
|
302
|
69
|
4
|
Z-28 Camaro
|
3956618
|
327
|
68-69
|
2
|
|
3956618
|
350
|
69
|
2 or 4
|
|
3956632
|
307
|
69
|
2
|
|
3959512
|
327
|
62-67
|
2
|
Was also used for some
"CE" replacement blocks
|
3959532
|
283
|
64
|
2
|
Used for some
"CE" replacement blocks
|
3959538
|
327
|
|
2
|
Chevy II recessed oil filter
boss� Used for some Chevy II
"CE" replacement blocks
|
3970010
|
302
|
69
|
4
|
Z-28 Camaro
|
3970010
|
327
|
69
|
2
|
Trucks and industrial
|
3970010
|
350
|
69-80
|
2 or 4
|
|
3970014
|
350
|
70-76
|
2 or 4
|
|
3970020
|
307
|
69-73
|
2
|
|
3970024
|
307
|
69-73
|
2
|
|
4715111
|
305
|
80
|
2
|
|
6259425
|
350
|
69-76
|
2
|
|
10036033
|
350
|
|
4
|
Goodwrench crate motor 2-piece rear seal "Hecho en Mexico"
|
10046164
|
305
|
86
|
2
|
|
10049804
|
|
|
4
|
Aluminum Pontiac Super
Duty version of Gen.I SBC 4.00" bore 350 mains
2-piece rear seal splayed caps GTP race block
|
10051182
|
|
|
2 or 4
|
Bowtie
3.75"-4.30" bores 1 or 2-piece rear seal
|
10051184
|
|
|
4
|
Bowtie
4.00"-4.155" bores 1 or 2-piece rear seal
|
10054727
|
350
|
86-up
|
2 or 4
|
one piece rear seal
some "Made in Canada"
|
10066036
|
350
|
|
2 or 4
|
Target Master/Goodwrench crate motor 2-piece rear seal "Hecho en Mexico"
|
10066038
|
350
|
92
|
4
|
Goodwrench crate motor 2-piece rear seal "Hecho en Mexico"
|
10090511
|
350
|
90
|
2
|
LT-5 ZR1 Vette 375hp
|
10125327
|
350
|
92-up
|
2 or 4
|
Gen.II LT-1 reverse flow cooling
|
10125327
|
350
|
96-up
|
2 or 4
|
Gen.II LT-4 reverse flow cooling
|
10134398
|
|
|
4
|
Bowtie Aluminum
4.125" bore 2.65" main journals
|
10134996
|
|
|
4
|
Bowtie Aluminum
4.125" bore 2.65" main journals
|
10153558
|
350
|
91-92
|
4
|
LT-5 ZR1 Vette 375hp
|
10168588
|
265
|
94-96
|
2
|
L99 Gen.II 4.3 Liter V-8 Caprice reverse flow cooling
|
10199001
|
350
|
93-95
|
4
|
LT-5 ZR1 Vette 405hp
|
10243878
|
305
|
96-98
|
2
|
Vortec truck roller cam one-piece rear seal
|
10243880
|
350
|
95-00
|
2 or 4
|
Vortec truck Gen.I crate
motors and "ZZ4" roller cam one piece rear seal
|
12550592
|
350
|
97-up
|
|
crossbolted block Gen.III "LS1" aluminum
|
12551358
|
|
.99-up
|
|
Gen.III 4.8L or 5.3L
cast iron truck
|
12551364
|
364
|
98-04
|
|
crossbolted cast iron Gen. III 6.0L truck
|
12559378
|
350
|
99-up
|
|
crossbolted block Gen.III "LS1" aluminum
|
12559846
|
350
|
98-up
|
|
crossbolted block Gen.III "LS1" aluminum
|
12560621
|
350
|
98-up
|
|
crossbolted block Gen.III "LS1" aluminum
|
12560626
|
350
|
99-up
|
|
crossbolted block Gen.III "LS1" aluminum
|
12560629
|
350
|
99
|
|
crossbolted block Gen.III "LS1" aluminum
|
12561168
|
350
|
01-up
|
|
crossbolted block Gen.III "LS1" aluminum
|
12562174
|
350
|
98-up
|
|
crossbolted block Gen.III "LS1" aluminum
|
12568952
|
364
|
05-up
|
|
crossbolted block Gen.III 6.0L aluminum "LS2"
|
12566910
|
325
|
04-up
|
|
crossbolted block Gen.III 5.3L aluminum SSR Truck
|
12571048
|
325
|
04-up
|
|
crossbolted block Gen.III 5.3L
|
12573581
|
364
|
98-04
|
|
crossbolted cast iron Gen.III 6.0L truck
|
12577184
|
364
|
98-04
|
|
crossbolted cast iron Gen.III 6.0L truck
|
12577396
|
|
02-up
|
|
Gen.III 4.8L or 5.3L
cast iron truck
|
14010201
|
305
|
80-85
|
2
|
|
14010202
|
305
|
80-85
|
2
|
|
14010203
|
305
|
80-85
|
2
|
|
14010207
|
350
|
80-85
|
2 or 4
|
|
14010209
|
350
|
80-85
|
2 or 4
|
|
14010280
|
267
|
79-82
|
2
|
|
14011064
|
350
|
83
|
4
|
|
14011148
|
350
|
87-89
|
|
Roller cam one-piece
rear seal
|
14016376
|
267
|
79-82
|
2
|
|
14016379
|
350
|
77-79
|
2 or 4
|
|
14016381
|
305
|
80-84
|
2
|
|
14016382
|
305
|
79-84
|
2
|
|
14016383
|
305
|
80-85
|
2
|
Truck
|
14079287
|
350
|
86-90
|
|
Truck
|
14088526
|
350
|
87-89
|
|
Roller cam one-piece rear
seal
|
14088548
|
350
|
86-88
|
2 or 4
|
|
14088551
|
305
|
86-87
|
2
|
one-piece rear main
seal
|
14093627
|
305
|
87-94
|
2
|
Roller or flat tappet
cam one-piece rear seal
|
14093638
|
350
|
87-95
|
2 or 4
|
Roller or flat tappet cam
one-piece rear seal
|
14094766
|
305
|
86-up
|
2
|
One-piece rear seal
|
14101147
|
305
|
85-up
|
2
|
|
14101148
|
350
|
86-90
|
4
|
One-piece rear seal
|
14102058
|
305
|
87-91
|
2
|
Roller cam one-piece
rear seal
|
22551656
|
|
|
4
|
Chevy/Olds Rocket
block 4.00"-4.190" bores 2.45" main journal sizes splayed
caps dry sump 2-piece rear seal 9.025" deck
|
22551660
|
|
|
4
|
Chevy/Olds Rocket
block 4.00"-4.190" bores 400 mains journal sizes splayed steel
caps wet sump raised cam 2-piece rear seal 9.300" deck
|