Jeffro,
Not sure about the ID # that you found, but there must be another
casting number somewhere on the engine.
Here's a list of the 6 cyl. chevy engine casting numbers that I found:
Number
14001133
1970
2135412
2193980
2324002
2324003
2324004
2404929
289890
328518
328572
328575
328576
328578
328880
329990
352194
358825
3629703
364909
366855
3692703
3692708
3692713
3693374
37001481
3701946
3703414
37127
3733340
3733813
3733946
3733949
3733950
3737012
3738307
3738365
3738476
3738813
3739365
3739716
3759365
3764476
3769716
3769717
3769925
377127
377129
3773949
3777178
3782856
3782858
378307
3783949
3788378
3788406
3788514
3788813
3789404
3789412
3789716
3792852
3792858
3821970
3833057
3833067
3833340
383340
3835253
3835309
3835335
3835353
3835363
3835374
3835491
3835497
3835527
3835692
3835794
3835846
3835849
3835894
3835911
3835917
3835946
3835949
3836012
3836223
3836233
3836340
3836386
3837004
3837012
3843363
3850817
3851656
3851659
3851859
3854036
3855914
3855987
3855991
3856233
3858190
386855
3877178
3879875
3886061
3890011
3890013
3892858
389770
3897702
3921770
3921967
3921968
3921970
828575
837751
839770
8397715
839910
839931
8994256
93403466
93403467
93406004
9787437
9790043
9795066
9890043
Make
Chevrolet
Chevrolet
GMC
GMC
GMC
GMC
GMC
GMC
Chevrolet
Chevrolet
Chevrolet
Chev/Buick/Olds/Pontiac
Chev/Buick/Pontiac
Chevrolet
Chevrolet
Chevrolet
Chevrolet
Chevrolet
Chevrolet
Chevrolet/Olds
Chev/Buick/Olds/Pontiac
Chevrolet
Chevrolet
Chevrolet
Chevrolet
Chevrolet
Chevrolet
Chevrolet
Chevrolet
Chevrolet
Chevrolet
Chevrolet
Chevrolet
Chevrolet
Chevrolet
Chevrolet
Chevrolet
Chevrolet
Chevrolet
Chevrolet
Chevrolet
Chevrolet
Chevrolet
Chevrolet
Chevrolet
Chevrolet
Chevrolet/Olds/Pontiac
Chevrolet
Chevrolet
Buick
Chevrolet
Chevrolet
Chevrolet
Chevrolet
Chevrolet
Chevrolet
Chevrolet
Chevrolet
Chevrolet
Chevrolet
Chevrolet
GMC
Chevrolet
GMC
Chevrolet
Chevrolet
Chevrolet
Chevrolet
Chevrolet
Chevrolet
Chevrolet
Chevrolet
Chevrolet
Chevrolet
Chevrolet
Chevrolet
Chevrolet
Chevrolet
Chevrolet
Chevrolet
Chevrolet
Chevrolet
Chevrolet
Chevrolet
Chevrolet
Chevrolet
Chevrolet
Chevrolet
Chevrolet
Chevrolet
Chevrolet
Chevrolet
Chevrolet
Chevrolet
Chevrolet
Chevrolet
Chevrolet
Chevrolet
Chevrolet/Olds/Pontiac
Chevrolet
Chevrolet
Chevrolet
Chevrolet
Chevrolet
Chevrolet
Buick/Olds/Chev/Pont/GMC
Chevrolet
Chevrolet
Buick/Chev/Olds/Pontiac
Chevrolet
Chevrolet
Chevrolet
Chevrolet
Chevrolet
Chevrolet
Chevrolet/Olds
Chevrolet
Chevrolet
Chevrolet
Chevrolet
Chevrolet
Chevrolet
Chevrolet
Chevrolet
Chevrolet
Chevrolet
Chevrolet
Pontiac
Pontiac
Pontiac
Pontiac
Year
76-80
64-67
46-54
52-54
55-62
55-63
55-62
55-63
63-77
73-77
73-76
68-84
68-76
73-84
63-77
63-77
73-84
66-76
50-52
75-79
66-84
50-52
50-52
50-52
42-49
53-55
53
54-56
73-76
55-57
58
54-55
53-55
54-55
55-57
58-62
60-62
58-62
55-63
58-62
58-62
59
58-62
58-62
59-62
58-62
73-79
73-84
54
68-76
62-67
62-67
60-62
53-54
62-74
62-69
62-70
55-59
63-76
63-66
63-72
62-66
62-67
67-72
62-70
63-70
55-57
55-57
42-53
42-49
42-49
48-52
54
42-49
54
42-53
51
50-52
42-53
53
42-53
53
53-55
54-55
53
54
55-57
55-57
55-57
55-58
55-57
55-57
55-57
53-55
62-78
63-72
63-76
63-72
62-76
63-66
63-71
63-70
55
54-55
74-77
62-78
62-70
63-66
68-72
68-72
64-67
42-51
42-53
66-76
64-69
64-76
63-76
72-77
42-49
42-53
42-49
42-51
42-49
64-77
75-83
75-84
75-84
66-67
68-69
68-69
68-69
CID
292
292
200,270
302
248,302
270
302
270
292
292
250
250
250
292
292
292
292
250
235
292
250
235
235
235
235
235
235
261
250
261
261
235
235
261
261
235
261
235
261
261
235
261
235
235
261
261
250
292
235
250
194
194
235
235
292
230
153
261
292
292
292
194
194
292
194
194
261
261
216
235
235
216
235
235
235
216
216
235
216
235
216
216
235
235
235
235
261
235
235
261
235
235-261
261
235
230-250
292
292
292
230-250
292
292
230
235
235
250
230-250
194
292
250
250
194
216
216
292
230
230-250
292
250
235
216
235
216
235
292
250
292
292
230
250
250
250
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