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Old 01-29-2013, 12:19 AM
cdminter59 cdminter59 is offline
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Headers on bbc

If the truck and engine are both 1968 it is probably a 396 ci or 427 ci. Both are good engines. Hereis alist of big block casting numbers. Print it.
Casting Number
Years
CID
340220
72-76
427
Truck Tall deck
345014
74-86
454
Truck
346236
74-76
454
2-bolt
359070
74-90
454
Truck
361959
73-85
454
Car & Truck
364776
68-84
427
Truck Tall deck
364779
68-88
366
Truck Tall deck
399204
70-71
509
4-Bolt Aluminum Can-AM
399289
73-79
454
2-bolt
399293
77-78
366
Truck
473478
68-84
427
Truck Tall deck
3716362
396
3732755
59-61
348
3732811
58
348
3751872
58
348
3755011
59-61
348
3771705
59-61
348
3782012
58-61
348
3782870
68-76
427
Truck Tall deck
3788068
62
409
3795623
61
409
3798962
62-65
348
Truck
3815707
58-61
348
3824553
66-67
366
Truck
3830814
63
409
3839752
62-63
409
3839754
65
409
3844422
64
409
3855961
66-67
396
2-bolt
3855962
65-66
396
4-Bolt
3855977
65-67
366
Truck Tall deck
3857651
409
Marine
3857655
62-65
348
Truck
3857656
65
409
3857658
409
Marine
3860386
62-64
409
3860387
58
348
3869942
66-67
427
2 & 4-Bolt
3873858
66
396
4-Bolt
3902406
67
396
2 & 4-Bolt
3902466
65-67
396
3904351
67
427
2 & 4-Bolt
3904354
66-67
366
Truck Tall deck
3916319
68-85
366
Truck Tall deck
3916321
68
427
2 & 4-Bolt
3916323
68
396
2 & 4-Bolt
3918319
66-70
366
Truck
3925521
68-85
366
Truck Tall deck
3935439
68-69
427
2 & 4-Bolt
3935440
68-69
396
2 & 4-Bolt
3937724
68-85
366
Truck Tall deck
3937726
68-84
427
Truck Tall deck
3946052
69
427
ZL-I Aluminum 4-Bolt
3946053
97
427
ZL-I Aluminum 4-Bolt 2nd design
3955270
69
427
2 & 4-Bolt
3955272
69
396/402
2 & 4-Bolt
3955274
68-85
366
Truck Tall deck
3955276
68-84
427
Truck Tall deck
3963512
69-71
427/454
2 & 4-Bolt COPO
3963513
73-76
454
3965440
68-69
396
3965449
68-72
396
3969852
68-84
366
Truck
3969854
69-72
396/402/454
2 & 4-Bolt
3969858
68-84
427
Truck Tall deck
3995623
61
409
3999289
72-78
454
Car & Truck 2-Bolt
3999290
72
402
2-bolt
3999293
68-85
366
Truck Tall deck
3999294
68-84
427
Truck Tall deck
6272176
68-76
366
Truck
6272177
72
402
2-bolt
6272181
73-76
427
Truck
10051107
454
4-Bolt Bowtie IV Short deck
10068286
90-91
454
4-Bolt IV Short deck
10069284
427
Truck
10114182
91-95
454
4-Bolt Gen-5
10114183
91-95
366
Truck Gen-5
10114184
91-95
427
Truck Gen-5
10134366
454
4-Bolt Gen-5 Bowtie Tall deck
10185050
454
4-Bolt Gen-5 Bowtie Short deck
10237297
96-up
454
4-Bolt Vortec 7400 Gen-6
10237300
96-up
502
4-Bolt 4.466 bore Gen-6
12550313
91-95
454
4-Bolt Gen-5
12556110
01-up
496
4-Bolt Vortec 8100 Gen-7
14015445
75-90
454
Car & Truck
14015543
87-90
454
4-Bolt Gen-5
14044807
454
4-Bolt IV Bowtie Tall deck
14096859
502
4-Bolt Gen-5
24502504
454
4-Bolt Gen-5 Bowtie Short deck
24502572
4-Bolt DRCE-2 Olds "9.5"" deck"
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