GM engine stamps | Engine Code sets

What's In The Kit

✔ Number set 0–9
✔ 4 letters of your choice

⚡ Fits These Vehicles (1969)

1969 Camaro Z/28 DZ302

📋 Product Notes & Details

GM engine Code stamps are found on most if not all early Chevy V8s.

The Engine code stamps are the larger stamps located on the ID PAD of the engine. Commonly machined off when decking the block during rebuilding.

The Partial code is the smaller font,To completely stamp the engine both engine code and partial stamps are needed. (see other listing, GM engine stamp | Partial Code)

There are a lot of options and variations of these stamps. What we have listed here is the most commonly used options. If you do not see the font or stamp you are looking for please reach out as its too difficult and confusing to list it all.

Kit Options:

-Number set only** (0-9)

-Stage 1 - Numbers** and 4 letters of your choice

-Stage 1.5 - Full Numbers and 4 letters of your choice

-Stage 2 - Full number set and number set

**We will need to know what 0 and 1 you need, noted at checkout.

Per numbers photo...Square 0 (Bottom), Rounded 0 (Top), standard 1 (Bottom), Roman 1 (Top).

Found on engines, but not limited to the following GM, Pontiac, Oldsmobile, and Buick

- 1965–1967 Chevrolet 327/365 hp L76 (or L79 hydraulic version)

- 1965–1969 Chevrolet 327/350–375 hp variants (e.g., L79, L46, L89 aluminum heads)

- 1967–1969 Chevrolet 302 MO/MP (pre-DZ versions)

- 1968–1969 Chevrolet 350 (L48/L46)

-1969 Chevrolet 302 DZ

- 1964–1967 Oldsmobile 330 (high-performance variants, e.g., 4-barrel)

- 1968–1970s Oldsmobile 350 (e.g., W-30/W-31 packages)

- 1963–1967 Pontiac 326 (high-output 4-barrel)

-1968+ Pontiac 350 (HO variants)

- 1959–1966 Pontiac 389 (Tri-Power/HO)

-1967+ Pontiac 400 (HO)

- 1966–1967 Buick 340 (high-output)

-1968+ Buick 350 (HO/GS variants)

💡 Need Help or Have Questions?

Contact us — we help restorers and makers every day and are happy to walk you through your project.