Decoding Engine, Carburetor, Manifolds
Short answer: Here’s how that set of engine/carb/manifold markings decodes:
- YR — engine usage/type code
- 33202 — Engine Unit Number
- 23N108627 — partial VIN, unique to the car the engine came from
- E220 (on the intake) — a date code (e.g., May 22, 1970?)
- 9796155 (on the exhaust manifold) — a part/casting number
- 17054905 — Rochester carburetor usage code
- 2738 — carburetor build-date code (e.g., 273rd day of 1968?)
Any proposed updates, changes, pictures, and/or corrections, please use our comment section below (may need to click on permalink to access comments feature). Information is subject to change and offered as is without any warranties or guarantees. Please review our Term's Of Use for more information.
Content last modified: June 13, 2026 at 10:06 am
← Frequently Asked Questions
