Turbo Hydramatic 400

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.

Julian date calendar - leap years (1964-1968-1972) - non-leap years

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 - 240hp
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.

CHEVELLESTUFF  All Rights Reserved
501 ~ May 16, 1967 (501st day from January 1, 1966)
CC ~ 396 (325hp)
67 ~ 1967
13884 ~ Transmission serial number

1968

Courtesy Bill Lessenberry
282 ~ October 9, 1967 (282nd day from Jan 1, 1967)
CC ~ 396 (325hp)
68 ~ 1968
5813 ~ Transmission serial number

CHEVELLESTUFF  All Rights Reserved
337 ~ December 3, 1967 (337th day from Jan 1, 1967)
CC ~ 396 (325hp)
68 ~ 1968
25916 ~ Transmission Serial Number

CHEVELLESTUFF  All Rights Reserved
490 ~ May 4, 1968 (490th day from January 1, 1967)
CD ~ 396 (350hp)
68 ~ 1968
25998 ~ Transmission serial number

CHEVELLESTUFF  All Rights Reserved
531 ~ June 14, 1968 (531st day from January 1, 1967)
CD ~ 396 (350hp)
68 ~ 1968
309469 ~ Transmission serial number

CHEVELLESTUFF  All Rights Reserved
538 ~ June 21, 1968 (538th day from January 1, 1967)
CC ~ 396 (325hp)
68 ~ 1968
60372 ~ Transmission serial number

CHEVELLESTUFF  All Rights Reserved
545 ~ June 28, 1968 (545th day from January 1, 1967)
CC ~ 396 (325hp)
68 ~ 1968
26734 ~ Transmission serial number

1969

CHEVELLESTUFF  All Rights Reserved
228 ~ August 15, 1968 (228th day from January 1, 1968 - leap year)
CC ~ 396/402 (325hp)
69 ~ 1969
2028 ~ Transmission serial number

CHEVELLESTUFF  All Rights Reserved
243 ~ August 30, 1968 (243rd day from January 1, 1968 - leap year)
CC ~ 396/402  (325hp)
69 ~ 1969
2247 ~ Transmission serial number

CHEVELLESTUFF  All Rights Reserved
205 ~ July 23, 1968 (205th day from January 1, 1968 - leap year)
CE ~ 396/402  (350hp)
69 ~ 1969
1071 ~ Transmission serial number

CHEVELLESTUFF  All Rights Reserved
205 ~ July 23, 1968 (205th day from January 1, 1968 - leap year)
CE ~ 396/402 (350hp)
69 ~ 1969
1161 ~ Transmission serial number

Courtesy Chris Carney
290 ~ October 17, 1968 (290th day from January 1, 1968 - leap year)
CE ~ 396/402 (350hp)
69 ~ 1969
1882 ~ Transmission serial number

CHEVELLESTUFF  All Rights Reserved
395 ~ January 29, 1969 (395th day from January 1, 1968 - leap year)
CX ~ 396/402 & 427 (375hp)
69 ~ 1969
2147 ~ Transmission serial number

CHEVELLESTUFF  All Rights Reserved
547 ~ June 30, 1969 (547th day from January 1, 1968 - leap year)
CC ~ 396/402 (325hp)
69 ~ 1969
27014 ~ Transmission serial number

CHEVELLESTUFF  All Rights Reserved
563 ~ July 16, 1969 563rd day from January 1, 1968 - leap year)
CX ~ 396/402 (375hp)
69 ~ 1969
4528 ~ Transmission serial number

1970

CHEVELLESTUFF  All Rights Reserved
304 ~ October 31, 1969 (304th day from Jan 1, 1969)
70 ~ 1970
CF ~ 402 (350hp)
8569 ~ Transmission serial number

CHEVELLESTUFF  All Rights Reserved
388 ~ January 23, 1970 (388th day from Jan 1, 1969)
70 ~ 1970
CS ~ 454 (360hp)
2614 ~ Transmission serial number

10/28/2009
281 ~ October 8, 1969 (281st day from Jan 1, 1969)
70 ~ 1970
CY ~ 396/402 & 454  (high shift point) (375hp & 450hp)
2683 ~ Transmission serial number

CHEVELLESTUFF  All Rights Reserved
413 ~ February 17, 1970 (413th day from Jan 1, 1969)
70 ~ 1970
CY ~ 396/402 & 454 high shift point (375hp & 450hp)
1928 ~ Transmission serial number

CHEVELLESTUFF  All Rights Reserved
419 ~ February 23, 1970 (419th day from Jan 1, 1969)
70 ~ 1970
CF ~ 402 (350hp)
21430 ~ Transmission serial number

CHEVELLESTUFF  All Rights Reserved
441 ~ March 17, 1970 (441st day from Jan 1, 1969)
70 ~ 1970
CY ~ 396/402 & 454 high shift point (375hp & 450hp)
24414 ~ Transmission serial number
Known to be fake and on an original SS396 car as a CF coded tag and being sold as an LS6. Buyer beware!

CHEVELLESTUFF  All Rights Reserved
469 ~April 14, 1970 (469th day from Jan 1, 1969)
70 ~ 1970
CY ~ 396/402 & 454 high shift point (375hp & 450hp)
2382 ~ Transmission serial number

1971

CHEVELLESTUFF  All Rights Reserved
383 ~ January 18, 1971 (383rd day from Jan 1, 1970)
71 ~ 1971
CD ~ 402 (300hp)
7352 ~ Transmission serial number

CHEVELLESTUFF  All Rights Reserved
463 ~ April 8, 1971 (463rd day from Jan 1, 1970)
71 ~ 1971
CD ~ 402 (300hp)
12894 ~ Transmission serial number

CHEVELLESTUFF  All Rights Reserved
483 ~ April 28, 1971 (483rd day from Jan 1, 1970)
71 ~ 1971
CD ~ 402 (300hp)
13801 ~ Transmission serial number

CHEVELLESTUFF  All Rights Reserved
218 ~ August 6, 1970 (218th day from Jan 1, 1970)
71 ~ 1971
CF ~ 454 (365hp)
1927 ~ Transmission serial number

CHEVELLESTUFF  All Rights Reserved
379 ~ January 14, 1971 (379th day from Jan 1, 1970)
71 ~ 1971
CF ~ 454 (365hp)
5610 ~ Transmission serial number

1972

CHEVELLESTUFF  All Rights Reserved
371 ~ January 6, 1972 (371st day from Jan 1, 1971)
72 ~ 1972
CD ~ 402 (240HP)
9305 ~ Transmission serial number

CHEVELLESTUFF  All Rights Reserved
517 ~ June 1, 1972 (517th day from Jan 1, 1971)
72 ~ 1972
CD ~ 402 (240HP)
18002 ~ Transmission serial number

Courtesy Bill Hall
Courtesy Bill Hall
203 ~ July 22, 1971 (203rd day from Jan 1, 1971)
72 ~ 1972
CF ~ 454 (270HP)
1535 ~ Transmission serial number

Courtesy Bill Hall
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.

CHEVELLESTUFF  All Rights Reserved
Location on driver side of case.

CHEVELLESTUFF  All Rights Reserved
Partial VIN stamping on a Kansas City-built 1969 Chevelle TH400.

CHEVELLESTUFF  All Rights Reserved
Partial VIN stamping on an Arlington-built 1970 Chevelle TH400.

CHEVELLESTUFF  All Rights Reserved
Partial VIN stamping on an Atlanta-built 1970 Chevelle TH400.

CHEVELLESTUFF  All Rights Reserved
Partial VIN stamping on a Los Angeles-built 1970 Chevelle TH400.

CHEVELLESTUFF  All Rights Reserved
Partial VIN stamping on a Los Angeles-built 1970 Chevelle TH400.

CHEVELLESTUFF  All Rights Reserved
Partial VIN stamping on a Los Angeles-built 1970 Chevelle TH400.

CHEVELLESTUFF  All Rights Reserved
Partial VIN stamping on a Los Angeles-built 1971 Chevelle TH400.

CHEVELLESTUFF  All Rights Reserved
Partial VIN stamping on an Oshawa-built 1971 Chevelle TH400.

Oil Pan

CHEVELLESTUFF  All Rights Reserved
Early 1967 Chevelle TH400 oil pans had a unique heel mark, a bump, and 3 dimples.

CHEVELLESTUFF  All Rights Reserved
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.