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Dealer Technical Bulletins - Section 00 - General Information, Lubrication
Content last modified: June 13, 2026 at 10:06 am
Bulletin 68-I-40 — Pontiac Motor Division Dealer Service Information Bulletin, Section 7G (Turbo Hydra-Matic Transmission). Attention: Service Manager.
Subject: Turbo Hydra-Matic Transmission — Component Identification.
Short answer: This bulletin provides a comprehensive component identification table for the Turbo Hydra-Matic Transmission used in 1965–1968 Pontiac (P/8), Tempest (T/8), and Firebird (F/8) models, covering the vacuum modulator, governor, valve body assembly, spacer plate, and converter assembly with part numbers, transmission model usages, and identification markings.
| Component | Year | Car Model | Trans. Model Usage | Service Part No. | Identification |
|---|---|---|---|---|---|
| Vacuum Modulator | 1965–68 | P/8, T/8, F/8 | All Models | 8623947 | Production part number 8623365 or service part number 8623947 is stamped on cover |
| Governor | 1966–68 | P/8 | PA, PB | 8623852 | Two-digit number stamped on the governor thrust cap: “11”, “12”, “13”, or “14” |
| 1967–68 | P/8, T/8, F/8 | PC, PS, PX, PY | 8625622 | ||
| 1966–68 | P/8 | PD, PG, PH | 8624099 | ||
| 1967–68 | T/8, F/8 | PQ | 8623898 | ||
| 1967–68 | T/8 | PT | 8624099 | ||
| Valve Body Assembly | 1967 | P/8 | PB | 8624824 | “P-1” |
| 1967 | P/8 | PC | 8624826 | “R-1” | |
| 1967 | P/8 | PD, PG | 8625617 | “AC-1” | |
| 1967 | P/8 | PH | 8624828 | “T-1” | |
| 1967 | T/8, F/8 | PQ | 8625782 | “AJ-1” | |
| 1967 | T/8 | PS | 8625616 | “AB-1” | |
| 1967 | T/8 | PT ¹ | 8625682 | “AH-1” | |
| 1967 | F/8 | PX | 8625784 | “AK-1” | |
| 1968 | P/8 | PA | 8626059 | “BO-1” | |
| 1968 | P/8 | PB | 8626038 | “BJ-1” | |
| 1968 | P/8 | PC | 8626049 | “BN-1” | |
| 1968 | P/8 | PD ² | 8626256 | “CJ-1” | |
| 1968 | P/8 | PG | 8626041 | “BL-1” | |
| 1968 | P/8 | PH | 8626039 | “BK-1” | |
| 1968 | T/8, F/8 | PQ | 8625784 | “AK-1” | |
| 1968 | T/8 | PT ³ | 8626038 | “BJ-1” | |
| 1968 | T/8, F/8 | PX, PY &sup4; | 8626108 | “CA-1” | |
| Spacer Plate | 1967 | P/8 | PB, PD, PG, PH &sup5; | 8625652 | “5” or “4” notches cut in outer edge of spacer plate |
| 1967 | P/8, T/8, F/8 | PC, PQ, PS, PT, PX &sup5; | 8624459* | ||
| 1968 | P/8, T/8, F/8 | PA, PC, PQ, PT, PX, PY | 8625652 | ||
| 1968 | P/8 | PB, PD, PG, PH | 8625899 | ||
| Converter Assembly | 1967 | P/8, T/8, F/8 | PC, PQ, PS, PX | 8623964 | One-inch-high number stamped on front of converter assembly: “5” or “4” |
| 1967 | P/8, T/8 | PB, PD, PG, PH, PT | 8623990 | ||
| 1968 | P/8, T/8, F/8 | PA, PC, PD, PQ, PX, PY | 8623964 | ||
| 1968 | P/8, T/8 | PB, PG, PH, PT | 8623990 |
1 Prior to PT-67 1210, “PT” model used 1967 “AB-1” production valve body (service part no. 8625616).
2 Prior to PD-68 26417, “PD” model used 1968 “BL-1” production valve body (service part no. 8626041).
3 Prior to PT-68 1006, “PT” model used 1967 “AH-1” production valve body (service part no. 8625682).
4 Prior to PX-68 2915, “PX” model used 1967–68 “AK-1” production valve body (service part no. 8625784).
5 Prior to PB-67 1014, “PB” model used a production spacer plate having no identification notches. Prior to PD-67 1013, “PD” model used a production spacer plate having no identification notches. Prior to PH-67 1009, “PH” model used a production spacer plate having no identification notches. Prior to PC-67 1010, “PC” model used a production spacer plate with U-notch removed from edge of spacer plate.
* Spacer plate 8625652 may be used in lieu of spacer plate 8624459.
Content last modified: June 13, 2026 at 10:06 am
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