ENGINE UNIT NUMBER
Number Shop Manual Name Description/Location(s)
44K2076 Engine Unit Number Top Rear of Engine by Oil Pressure sending unit, etched into block.
Information
44K is the Engine Unit # prefix that identifies the engine type. For this example it means this engine was intended for a 6039, 6329, 6339, 6357, 6367, 6267 with air.
2076 denotes the numerical order in which this engine was built.
A decode card for Prefix codes is located on page 1-2 of the 1963 and 1964 shop manuals.
Decode Info for 1963 390 Engines
| Body Styles | Engine Unit No. Prefix |
6039, 6229, 6257, 6267, 6239, 6329, 6339, 6357, 6367, 6389 without air cond |
36X |
| 6039, 6229, 6257, 6267, 6239, 6329, 6339, 6357, 6367, 6389 with air cond | 36K |
| 6723, 6733, 6890 without air | 37X |
| 6723, 6733, 6890 with air | 37K |
Decode Info for 1964 429 Engines
| Body Styles | Engine Unit No. Prefix |
6039, 6329, 6339, 6357, 6367, 6267 without air |
44X |
| 6039, 6329, 6339, 6357, 6367, 6267 with air cond. | 44K |
| 6229, 6257, 6239 without air | 46X |
| 6229, 6257, 6239 with air | 46K |
| 6723, 6733, 6890 without air | 47X |
| 6723, 6733, 6890 with air | 47K |
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Hi Robert,
I emailed you more pictures for the Authenticity Manual.
Dennis DiBari
Posted by SK on June 2, 2025 at 2:20pm 2 Comments 0 Likes
Could someone post front and back photos of the 1963 right-hand kick panel with A/C?
My car didn’t come with the original kick panels, so it's a bit of a mystery to me how I should cut the backing board and carpet to fit around the A/C.
Many thanks,
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I bought this seat material thinking that it’s…
November 15, 2026 from 7pm to 8:30pm – Zoom
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