- OHV, 16 Valves
- FI, Naturally Aspirated, Gas
- LM4 Aluminum Block & Heads
- Oval Exhaust Ports w/ .8570″
- Width Rear Flange
- 3Bolt Cam Gear
- Advisory: check PCV operation at risk of oil consumption TSB# PIP4492K
| Block | Long Block |
|---|---|
| Cylinder | V8 |
| Eng pn | CH1655 |
| Liter cid | 5.3 / 325 |
| Vin | P |
| Yr | 2003, 2004 |
| Blk cast | 66910 |
| Eng type | Auto |
| Model | SSR, Trailblazer EXT |