Home
Decode
Tech
Tools
Dale's Coins/CDs
Contact
Chevelle
of the Month
Things
For Sale
Custom
StickersDistributor
Distributors from 1964 through 1966 were generally cast iron while 1967 and later were aluminum. 1964 through 1966 units have a codes embossed on an aluminum band while the 1967 and later units have the codes stamped into the housing.
The date code on a distributor is simple to decode. It includes the year, month and day such as 7K25. This decodes to 1967, October, 25th. Month codes are A through M for January through December (omitting 'I').
One astute reader has measured the outside diameter of several original distributors. The main body where numbers and dates are stamped is about 3.810-inches. For about 0.200-inches down from the distributor cap mount the diameter is about 3.795-inches. If the main body has been turned to allow for new numbers to be stamped, it should be easy to tell if this area has a smaller diameter than 3.810-inches.
| A - January | B - February | C - March | D - April |
| E - May | F - June | G - July | H - August |
| J - September | K - October | L - November | M - December |
Color Code Designations (shown in parentheses where available)
| 1 - No paint | 2 - White | 3 - Yellow | 4 - Orange |
| 5 - Pink | 6 - Red | 7 - Light Blue | 8 - Blue |
| 9 - Light Green | 10 - Green | 11 - Gray | 12 - Brown |
| 13 - Black | 14 - Purple |
| 1964 ~ ENGINE | NUMBER |
| 283 195hp | 1111015 |
| 283 220hp | 1111051 |
| 327 all | 1111016 |
| 1965 ~ ENGINE | NUMBER |
| 283 195hp/220hp (1) | 1111015 |
| 327 350hp (5) | 1111071 |
| 327 350hp w/transistor ignition (5) | 1111072 |
| 396 375hp w/transistor ignition | 1111074 |
| 327 250hp/300hp | 1111075 |
| 396 375hp (3 until 5/66, 1 after) | 1111094 |
| 1966 ~ ENGINE | NUMBER |
| 396 375hp w/transistor ignition (2) | 1111074 |
| 396 375hp (2) | 1111100 |
| 396 325hp (1) | 1111109 |
| 327 275hp w/PG | 1111112 |
| 327 275hp w/A.I.R. (5-10) | 1111116 |
| 396 325hp w/transistor ignition (lead wire 4) (2-10) | 1111137 |
| 396 360hp (5) | 1111138 |
| 396 360hp w/transistor ignition (lead wire 2-10) (5) | 1111139 |
| 283 195hp/220hp (12) |
1111150 - 6A20 1111150 - 6F21 |
| 327 275hp 1st design w/o A.I.R. (10) | 1111152 |
| 327 350hp 1st design (3) | 1111154 |
| 327 275hp 2nd design | 1111193 |
| 327 350hp 2nd design | 1111195 |
| 1967 ~ ENGINE | NUMBER |
| 283 195hp | 1111150 |
| 396 325hp All, 396 350hp w/A.I.R. | 1111169 - 7F12 |
| 396 350hp All exc. A.I.R, 396 375 | 1111170 |
| 327 325hp (3) | 1111195 |
| 327 275hp (10) | 1111249 |
| 283 195hp w/A.I.R. (6-12) | 1111256 |
| 396 325hp w/transistor ignition (unverified) (2-10) | 1111277 |
| 1968 ~ ENGINE | NUMBER |
| 327 250hp (12) | 1111150 |
| 396 325hp All, 396 350hp automatic | 1111169 - 8D17 |
| 396 375hp | 1111170 |
| 307 200hp automatic, 307 200hp manual (2nd design) (7) | 1111257 |
| 327 275hp automatic (10) | 1111297 |
| 327 275hp manual (9) | 1111298 - 8A15 |
| 307 200hp manual (1st design) | 1111439 |
| 327 325hp (1st design) | 1111444 - 7J16 |
| 396 350hp manual (6) | 1111445 - 7G24 |
| 327 325hp (2nd design) (4) | 1111448 |
| 1969 ~ ENGINE | NUMBER |
| 307 200hp (7-12) | 1111481 |
| 350 250hp manual (6-12) | 1111486 |
| 350 250hp automatic (12) | 1111487 |
| 350 300hp manual (6-8) | 1111488 |
| 350 300hp automatic (8) | 1111489 - 9J9 |
| 396 325hp |
111497 - 8H8 1111497 - 9C26 |
| 396 350hp manual (6) | 1111498 |
| 396 350hp automatic, 375 hp all (14) | 1111499 - restored |
| 350 255hp automatic (4) |
1111955 - 8J23 1111955 - 8K9 1111955 - 9B5 1111955 - 9B18 |
| 350 255hp manual (4-6) | 1111956 |
| 1970 ~ ENGINE | NUMBER |
| 454 450hp | 1111437 -
9L11 1111437 - 9M10 |
| 454 360hp | 1111963 |
| 307 200hp manual | 1111985 |
| 350 300hp manual | 1111996 |
| 350 300hp automatic | 1111997 |
| 402 330hp all | 1111998 |
| 402 350hp manual | 1111999 - 0B24 |
| 402 350hp automatic/375hp all | 1112000 - 9G15 |
| 350 250hp manual | 1112001 - 0E25 |
| 350 250hp automatic | 1112002 |
| 307 200hp automatic | 1112005 |
| 1971 ~ ENGINE | NUMBER |
| 307 200hp manual | 1112005 - 0J11 |
| 350 245hp automatic | 1112005 - 0J11 |
| 307 200hp automatic | 1112039 |
| 350 245hp manual | 1112042 |
| 350 275hp manual | 1112044 |
| 350 275hp automatic | 1112045 |
| 454 365hp | 1112052 |
| 454 425hp automatic | 1112054 |
| 402 300hp | 1112057 |
| 454 425hp manual | 1112075 |
| Specifications per GM | |
| 1972 ~ ENGINE | NUMBER |
| 307 130hp manual (1st design) 350 165hp all (1st design) |
1112005 |
| 307 130hp automatic (1st design) 350 175hp manual (1st design) |
1112039 |
| 350 175hp automatic (1st design) | 1112045 |
| 402 240hp all | 1112057 |
| 454 270hp all | 1112052 - 1H19 |
| 307 130hp manual (2nd design) 350 165hp all (2nd design) |
1112314 |
| 307 130hp automatic (2nd design) | 1112147 |
| 350 175hp manual (2nd design) | 1112152 |
| 350 175hp automatic (2nd design) | 1112154 |
Photos
1966 283, 1967 283, and 1968 327 - June 21, 1966
1968 327/325hp - September 16, 1967 (note yellow paint daub)
1968 327/275hp - January 15, 1968 (note light green paint daub)
1969 350/255hp - September 23, 1968 (note orange paint daub)
1969 L78 - January 15, 1969
Before and after restoration...
1969 L78 - December 28, 1968
Anyone with photos of distributor numbers not shown or listed is invited to share.
