Turbo Hydramatic 400 Transmission
Only those Chevelles I have documented via build sheet or other paperwork is listed here. There are certainly other Chevrolet models that may use the same transmission code tag.
| Code/Engine | Year/HP |
| CC - 396/402 | 1967, 1968, 1969 - 325hp |
| CD - 396/402 | 1968 - 350hp 1970 - 330hp (LS3) 1971 - 300hp 1972 - 240hp |
| CE - 396/402 | 1969 - 350hp |
| CF - 402/454 | 1970 - 350hp 1971 - 365hp 1972 - 270hp |
| CR - 454 | 1970 - 360hp (found on Van Nuys LS5s prior to at least 01-14) |
| CS - 454 | 1970 - 360hp |
| CW - 402 | 1970 - 375hp |
| CX - 396 | 1969 - 375hp (also reported on 1969 427 COPO) |
| CY - 454 (high shift point) | 1970 - 450hp |
(Note: List is not complete but data collection are ongoing.)
Identification tag
A small metal tag is affixed to the passenger side of the transmission just above the pan rail. This identified the model year, engine type, date, and transmission serial number. All TH400 transmission dates are counted from January 1 of the previous calendar year. For example a Julian date of 441 on a 1970 Chevelle TH400 is counted as 441 from January 1, 1969 - or March 17, 1970. A Julian date of 281 would be October 8, 1969.
Julian Calendars: Leap Years (1968-1972) - Non-Leap Years (all others)
501 ~ May 16, 1967 (501st day from January 1, 1966)
CC ~ 396 (325hp)
67 ~ 1967
13884 ~ Transmission serial number
282 ~ October 9, 1967 (282nd day from Jan 1, 1967)
CC ~ 396 (325hp)
68 ~ 1968
5813 ~ Transmission serial number
337 ~ December 3, 1967 (337th day from Jan 1, 1967)
CC ~ 396 (325hp)
68 ~ 1968
25916 ~ Transmission Serial Number
490 ~ May 4, 1968 (490th day from January 1, 1967)
CD ~ 396 (350hp)
68 ~ 1968
25998 ~ Transmission serial number
531 ~ June 14, 1968 (531st day from January 1, 1967)
CD ~ 396 (350hp)
68 ~ 1968
309469 ~ Transmission serial number
538 ~ June 21, 1968 (538th day from January 1, 1967)
CC ~ 396 (325hp)
68 ~ 1968
60372 ~ Transmission serial number
545 ~ June 28, 1968 (545th day from January 1, 1967)
CC ~ 396 (325hp)
68 ~ 1968
26734 ~ Transmission serial number
228 ~ August 15, 1968 (228th day from January 1, 1968 - leap year)
CC ~ 396/402 (325hp)
69 ~ 1969
2028 ~ Transmission serial number
243 ~ August 30, 1968 (243rd day from January 1, 1968 - leap year)
CC ~ 396/402 (325hp)
69 ~ 1969
2247 ~ Transmission serial number
205 ~ July 23, 1968 (205th day from January 1, 1968 - leap year)
CE ~ 396/402
(350hp)
69 ~ 1969
1071 ~ Transmission serial number
205 ~ July 23, 1968 (205th day from January 1, 1968 - leap year)
CE ~ 396/402
(350hp)
69 ~ 1969
1161 ~ Transmission serial number
290 ~ October 17, 1968 (290th day from January 1, 1968 - leap year)
CE ~ 396/402 (350hp)
69 ~ 1969
1882 ~ Transmission serial number
395 ~ January 29, 1969 (395th day from January 1, 1968 - leap year)
CX ~ 396/402 & 427 (375hp)
69 ~ 1969
2147 ~ Transmission serial number
547 ~ June 30, 1969 (547th day from January 1, 1968 - leap year)
CC ~ 396/402 (325hp)
69 ~ 1969
27014 ~ Transmission serial number
563 ~ July 16, 1969 563rd day from January 1, 1968 - leap year)
CX ~ 396/402 (375hp)
69 ~ 1969
4528 ~ Transmission serial number
300 ~ October 27, 1969 (300th day from Jan 1, 1969)
70 ~ 1970
CS ~ 454 (360hp)
x244 ~ Transmission serial number
304 ~ October 31, 1969 (304th day from Jan 1, 1969)
70 ~ 1970
CF ~ 402 (350hp)
8569 ~ Transmission serial number
388 ~ January 23, 1970 (388th day from Jan 1, 1969)
70 ~ 1970
CS ~ 454 (360hp)
2614 ~ Transmission serial number
281 ~ October 8, 1969 (281st day from Jan 1, 1969)
70 ~ 1970
CY ~ 454 (high shift point) (450hp)
2683 ~ Transmission serial number
413 ~ February 17, 1970 (413th day from Jan 1, 1969)
70 ~ 1970
CY ~ 454 (high shift point) (450hp)
1928 ~ Transmission serial number
419 ~ February 23, 1970 (419th day from Jan 1, 1969)
70 ~ 1970
CF ~ 402 (350hp)
21430 ~ Transmission serial number
441 ~ March 17, 1970 (441st day from Jan 1, 1969)
70 ~ 1970
CY ~ 454 (high shift point) (450hp)
24414 ~ Transmission serial number
469 ~April 14, 1970 (469th day from Jan 1, 1969)
70 ~ 1970
CY ~ 454 (high shift point) (450hp)
2382 ~ Transmission serial number
383 ~ January 18, 1971 (383rd day from Jan 1, 1970)
71 ~ 1971
CD ~ 402 (300hp)
7352 ~ Transmission serial number
463 ~ April 8, 1971 (463rd day from Jan 1, 1970)
71 ~ 1971
CD ~ 402 (300hp)
12894 ~ Transmission serial number
483 ~ April 28, 1971 (483rd day from Jan 1, 1970)
71 ~ 1971
CD ~ 402 (300hp)
13801 ~ Transmission serial number
218 ~ August 6, 1970 (218th day from Jan 1, 1970)
71 ~ 1971
CF ~ 454 (365hp)
1927 ~ Transmission serial number
379 ~ January 14, 1971 (379th day from Jan 1, 1970)
71 ~ 1971
CF ~ 454 (365hp)
5610 ~ Transmission serial number
371 ~ January 6, 1972 (371st day from Jan 1, 1971)
72 ~ 1972
CD ~ 402 (240HP)
9305 ~ Transmission serial number
517 ~ June 1, 1972 (517th day from Jan 1, 1971)
72 ~ 1972
CD ~ 402 (240HP)
18002 ~ Transmission serial number
Courtesy Bill Hall
203 ~ July 22, 1971 (203rd day from Jan 1, 1971)
72 ~ 1972
CF ~ 454 (270HP)
1535 ~ Transmission serial number
309 ~ November 5, 1971 (309th day from Jan 1, 1971)
72 ~ 1972
CF ~ 454 (270HP)
2607 ~ Transmission serial number
Partial VIN
The partial VIN is stamped on the driver side of the transmission just above the pan rail. This identified the model year, assembly plant, last 6 digits of the car the transmission was installed in.
Location on driver side of case.
Partial VIN stamping on a Kansas City-built 1969 Chevelle TH400.
Partial VIN stamping on an Arlington-built 1970 Chevelle TH400.
Partial VIN stamping on an Atlanta-built 1970 Chevelle TH400.
Partial VIN stamping on a Los Angeles-built 1970 Chevelle TH400.
Partial VIN stamping on a Los Angeles-built 1970 Chevelle TH400.
Partial VIN stamping on a Los Angeles-built 1970 Chevelle TH400.
Partial VIN stamping on a Los Angeles-built 1971 Chevelle TH400.
Partial VIN stamping on an Oshawa-built 1971 Chevelle TH400.
Oil Pan
Early 1967 Chevelle TH400 oil pans had a unique heel mark, a bump, and
3 dimples.
According to a Chevrolet Service News Bulletin around July of 1967 saw
a change in the TH400 oil pan; the heel mark, bump, and 1 of the dimples
was gone.
