Automatic Transmission Dimensions
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General Motors
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Ford
Chrysler
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Powerglide (bellhousing pattern - Chevrolet, Fit-all)
| Style |
A |
B |
C |
D |
E |
| short shaft |
25 23/64 |
20 9/16 |
16 5/16 |
3 ¾ |
19 |
| TCI shorty |
17 15/16 |
20 9/16 |
16 5/16 |
N/A |
19 |
| long shaft |
27 9/16 |
20 9/16 |
16 5/16 |
3 ¾ |
19 |
TH350 (bellhousing pattern - Chevrolet, BOP, Fit-All)
| Style |
A |
B |
C |
D |
E |
| 6" tailshaft |
27 11/16 |
21 5/8 |
20 3/8 |
3 ¾ |
19 1/8 |
| 9" tailshaft |
30 11/16 |
21 5/8 |
20 3/8 |
3 ¾ |
19 1/8 |
| 12" tailshaft |
33 27/32 |
21 5/8 |
20 3/8 |
3 ¾ |
19 1/8 |
TH400 (bellhousing pattern - Chevrolet, BOP)
| Style |
A |
B |
C |
D |
E |
| C tailshaft |
28 3/8 |
26 15/16 |
24 5/16 |
4 ¼ |
20 |
| D tailshaft |
33 27/32 |
27 15/16 |
24 5/16 |
4 ¼ |
20 |
| 13" tailshaft |
37 7/8 |
27 21/32 |
24 5/16 |
1 ¾ |
20 |
2004R (bellhousing pattern - BOP, Fit-All)
| Style |
A |
B |
C |
D |
E |
| All |
27 11/16 |
integral tailhousing |
27 |
3 ¾ |
19 1/8 |
700R4 4L60 (4L60E 1993-1995) (bellhousing pattern - Chevrolet)
| Style |
A |
B |
C |
D |
E |
| All except Corvette |
30 ¾ |
23 3/8 |
22 ½ |
3 ¾ |
20 |
| Corvette (1982-1996) |
29 7/8 |
23 3/8 |
22 ½ |
3 ¾ |
20 |
4L60E/4L65E 1996-Later (bellhousing pattern - Chevrolet/removable)
| Style |
A |
B |
C |
D |
E |
| All except Corvette & LS1/LS2 |
30 ¾ |
23 3/16 |
21 ¾ |
3 ¾ |
18 ¼ |
| Corvette (transaxle) |
|
|
|
N/A |
N/A |
| LS1/LS2-style (1998-later) |
31 5/32 |
23 19/32 |
21 ¾ |
3 ¾ |
18 ¼ |
4L80E/4L85E 1991-Later (bellhousing pattern - Chevrolet)
| Style |
A |
B |
C |
D |
E |
| Std. 2wd |
32 11/16 |
30 3/8 |
26 |
4 ¼ |
20 |
| HD 2wd |
31 15/16 |
30 3/8 |
26 |
4 ¼ |
20 |
| HD long |
33 |
30 3/8 |
26 |
4 ¼ |
20 |
| 4 X 4 |
29 |
30 3/8 |
26 |
N/A |
20 |
C4 (bellhousing pattern (removable) - 4 Cylinder, Small Block, Big Block)
| Style |
A |
B |
C |
D |
E |
| Case Fill |
24 5/16 |
19 1/2 |
16 3/4 |
5 9/16 |
N/A |
| Pan Fill |
30 19/32 |
20 1/2 |
18 1/8 |
5 9/16 |
N/A |
| CF w/ PF conv. |
|
|
|
5 9/16 |
N/A |
C6 (bellhousing pattern - FE Big Block, Big Block, Small Block)
| Style |
A |
B |
C |
D |
E |
| FE Big Block |
33 ½ |
22 3/8 |
20 |
5 ½ |
|
| Big Block |
33 ½ |
22 3/8 |
20 |
5 ½ |
|
| Small Block |
33 ½ |
22 3/8 |
20 |
5 ½ |
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AOD (bellhousing pattern - Small Block)
| Style |
A |
B |
C |
D |
E |
| Small Block |
30 3/8 |
22 5/16 |
20 3/16 |
5 5/16 |
19 9/16 |
AODE/4R70W (bellhousing pattern - Small Block, Modular)
| Style |
A |
B |
C |
D |
E |
| Small Block |
31 3/16 |
23 5/16 |
21 |
5 5/16 |
19 3/8 |
5R55S
| A |
B |
C |
D |
E |
| 281/8 |
253/4 |
2411/16 |
N/A 1-Hole / 1-Bolt |
183/4 |
A-727/37RH
| Style |
A |
B |
C |
D |
E |
| Small Block |
34 3/8 |
23 ¾ |
16 |
2 ¾ |
18 |
| Big Block |
34 ½ |
22 ¾ |
16 |
2 ¾ |
18 13/16 |
A-904/32RH
| Style |
A |
B |
C |
D |
E |
| Small Block |
30 ¾ |
23 |
14 |
2 3/16 |
17 7/8 |
A-518/46RH/47RH/47RE
| Style |
A |
B |
C |
D |
E |
| Small Block |
|
|
16 |
|
16 5/16 |
A-500/42RH/42RE
| Style |
A |
B |
C |
D |
E |
| Small Block |
37 |
24 ½ |
15 7/8 |
3 5/8 |
18 1/8 |
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