This page will cover the various factory and aftermarket parts that can be used to swap a manual transmission into an A body or upgrade a three speed stick to a four speed.
| Year | 3 speed | 4 speed | 11" clutch | ||||
| 1964 | 2402690 | 2463025 | 2463565 | ||||
| 1965-1966 | 2468479 | 2468431 | Not available | ||||
| 1967-1972 | 2658955 | Not available (*) | 2536918 | ||||
| 1973-1974 | 2658955 | Not available (*) | Not available (#) | ||||
| 1975-1976 | 3743645 | 3742645 | Not available (#) | ||||
Notes:
(*) Use the 1975-1976 parts
(#) Use 1967-1972 parts
| Year | LA engine, 3 speed | LA engine, 4 speed | B/RB engine, 4 speed |
| 1964-1966 | 2463411 | 246524 | Not available |
| 1967-1968 | 2780900 | 2806083 | 2536945 |
| 1968-1971 | 2892480 | 2892480 | 2536945 (1968-1969 only)(#) |
| 1972-1973 | 3515732 | 3515732 | Not available (#) |
| 1974 | 3743077 | 3743077 | Not available (#) |
| 1975-1976 | 3743857 | 3743857 | Not available (#) |
Notes:
(#) For 1970-1976 A bodies use 1967-1969 parts
| Year | Transmission crossmember | Transmission mount | |
| 1964-1965 | 2260287 | 2265836 | |
| 1966 | 2530642 | 2533145 | |
| 1967-1969 | 2768475 | 2533145 | |
| 1970-1972 | 2925943 | 2533145 | |
| 1973-1975 | 3466462 | 3642831 (1973-1974 only, 1975 w/o catalyst) | |
| 3817112/3817215 w/ catalyst | |||
| 1976 | 4001693 | 3642831/3817239 w/o catalyst | |
| 3717244 w/ catalyst | |||
Notes:
The transmission crossmember and mount is the same for a given year regardless of 3 or 4 speed application.
You can try running these through Partsvoice to see if any are in stock. Most likely you will have to hit the boneyards and swap meets.
This is the very basics, you will need to get the clutch linkage, add the floorpan hump, and swap in the pedals. Your best bet is to find a donor with parts that are compatible with your A body.
There are none that I am aware of. You can get bits and pieces from places like Year One or Lakewood. Look in circle track magazines for hydraulic clutch items.
© 1999 Steve M. Knickerbocker