What Is the Pontiac 473 EJR
The Pontiac 473 EJR is a rare V8 performance package built by Pontiac for the 1967 model year. It is not a standalone model but a specific engine and option code combination that appeared on mid-level and higher trims such as the Catalina, Lemans, and Grand Prix. The 473 designation refers to a 400 cubic-inch V8 equipped with a single Rochester 4GC Carter carburetor, mild performance cam, and a 9:1 compression ratio. The EJR code covers engine, axle, and interior trim options that were often grouped for convenience. This profile explains the mechanical details, visual cues, build dates, and common market confusion so you can distinguish a true 473 EJR from lookalikes.
473 EJR Engine Specifications
Mechanical Details
At the core of the 473 EJR package is a 400 cubic-inch (6.6L) V8 derived from Pontiac’s larger displacement architecture, but tuned for moderate performance and everyday drivability. Unlike the hotter 455 HO, the 473 uses a milder cam profile and a single 4GC carburetor calibrated for economy and reliability. Compression is set at 9:1, allowing the use of regular leaded or low-lead gasoline available in 1967. The valvetrain follows Pontiac’s traditional wedge-style heads, designed for a balance of top-end breathing and low-end torque.
| Attribute | Verified Detail | Source Type |
|---|---|---|
| Displacement | 400 cubic inches (6.6L) | Factory specification sheet |
| Bore x Stroke | 4.126 in x 3.75 in | Engineering records |
| Compression | 9.0:1 | Service manual |
| Carburetor | Rochester 4GC single | Parts catalog |
| Horsepower (SAE gross) | 325 hp | GM/Divisional release |
| Torque (SAE gross) | 445 lb-ft | GM/Divisional release |
| Application | Catalina, Lemans, Grand Prix | Build sheets |
Visual Identification and Matching
Identifying a Pontiac 473 EJR requires checking both mechanical and trim cues. Under the hood, look for the 400 engine painted with the standard Pontiac blue, a correct-style Rochester 4GC carburetor, and appropriate emission controls for 1967. The exhaust should exit through a dual-outlet mid-back configuration typical of mid-year models, and the engine mount bosses should align with the frame’s 400-family placement. Inside the car, the EJR package includes deluxe trims, specific gauge faces, and bench or reclining front seats depending on the body. To confirm a factory match, compare the partial VIN on the engine block and the body tag; the suffix codes should align with 1967 and the 473/EJR designation.
Performance and Driving Dynamics
With 325 hp and 445 lb-ft, the 473 EJR delivers strong mid-range torque suitable for classic muscle car behavior, with brisk mid-gear pull rather than peaky top-end performance. The 400ci derivative keeps the engine compact enough for near-stock fitment in full-size B-body cars such as the Catalina and intermediate A-body cars like the Lemans. The mild cam and 9:1 compression allow for predictable throttle response and reduced cam lift noise, making the 473 EJR livelier than base 400 engines yet more manageable than high-compression offerings. Expect brisk 0 to 60 mph times in the low 6-second range for contemporary estimates, with top speeds near 120 mph on rear-axle ratios in the 3.23 to 3.42 range.
Market Rarity and Collectibility
The 473 EJR is uncommon because it was offered for only one model year and not across all Pontiac lines, which limits surviving numbers relative to higher-volume trims. Many 473 EJR cars were optioned with automatic transmissions and luxury-oriented trim, further reducing their prevalence in driver-focused builds today. Original window stickers, build sheets, and title information can significantly affect value, as numbers-matching examples in correct specification attract premium prices among collectors. Condition, originality, and documentation together are the primary drivers of long-term value for 473 EJR-equipped vehicles.
Common Misconceptions and Confusion
Because the 473 EJR package includes several visual and mechanical options, it is often mistaken for either base 400 cars or the more powerful 455 HO. The EJR coding can also be confused with appearance or interior packages that share similar letter combinations in other Pontiac trim hierarchies. Another frequent mix-up is pairing the 473 engine with incorrect axle ratios or rear-gear tags that do not reflect the original build. Relying on factory documentation, engine block castings, and the partial VIN in the dashboard or trunk can resolve most of these identification issues.
Summary Checklist
- Engine: 400 cubic-inch V8 (6.6L) with Rochester 4GC single carburetor
- Power: 325 hp / 445 lb-ft torque (SAE gross)
- Compression: 9.0:1, suitable for regular gasoline
- Applications: Catalina, Lemans, Grand Prix (1967)
- Identification: Verify partial VIN, engine block code, and axle tag match
- Rarity: One-year package, narrower trim availability than base 400
Preservation and Maintenance Tips
Maintaining a 473 EJR benefits from period-correct or reproduction components, especially ignition and fuel system parts that match the original setup. Rebuilds should retain correct ratios and mild cam specifications to preserve the intended balance of drivability and performance. When documenting value, keep factory paperwork, service records, and photographs of matching numbers. For daily use, verify that emissions adaptations are sympathetic to the 400ci engine so that reliability is not compromised by overly aggressive tuning.
Closing Note
The Pontiac 473 EJR represents a concise snapshot of 1967 muscle car engineering: a well-balanced 400 cubic-inch V8 paired with specific interior and axle options that distinguish it from both base and high-performance variants. For enthusiasts and collectors, the combination of factory documentation, clear visual cues, and moderate power output makes the 473 EJR a verifiable and enduring example of Pontiac’s performance lineup.