Four models of the Firebird were available:
| VIN Location | Left front door post | ||
|---|---|---|---|
| Position | Character | Description | |
| 1 | 2 | General Motors: Pontiac Division | |
| 2 & 3 | 23 | body series: Firebird | |
| 4 & 5 | 67 | convertible | |
| 37 | hardtop | ||
| 6 | 1 | 1971 | |
| 7 | V | Assembled in Lordstown, Ohio | |
| 8 to 13 | 100001 and up | production sequence | |
| Model Number | Style Number | Body Type | Seating | Factory Price | Shipping Weight | Production Total |
|---|---|---|---|---|---|---|
| 223 | 22387 | 2-door Hardtop Base Firebird | 4 | $3047 | 3164 | 23,021 |
| 224 | 22487 | 2-door Hardtop Esprit | 4 | $3416 | 3423 | 20,185 |
| 226 | 22687 | 2-door Hardtop Formula | 4 | $3445 | 3473 | 7,802 |
| 228 | 22887 | 2-door Hardtop Trans Am | 4 | $4594 | 3578 | 2,116 |
| FEATURE | Base 6 | Sprint 6 | Tempest 8 | GTO 8 | HO 8 |
|---|---|---|---|---|---|
| Configuration | Inline | Inline | Vee | Vee | Vee |
| Cylinders | Six | Six | 8 | 8 | 8 |
| Valves | Overhead | Overhead | Overhead | Overhead | Overhead |
| Camshaft | Overhead | Overhead | Pushrod | Pushrod | Pushrod |
| Block | Cast Iron | Cast Iron | Cast Iron | Cast Iron | Cast Iron |
| Displacement | 250 cid | 250 cid | 350 cid | 350 cid | 400 cid |
| Bore & Stroke | 3.875"x3.531" | 3.875"x3.531" | 3.875"x3.75" | 3.875"x3.75" | 4.125"x3.746" |
| Compression Ratio | 10.5:1 | 10.5:1 | 9.2:1 | 10.5:1 | 10.75:1 |
| Brake HP | 175 @ 4800 rpm | 215 @ 4800 rpm | 265 @ 4600 rpm | 320 @ 5100 rpm | 330 @ 4800 rpm |
| Main bearings | 5 | 5 | |||
| Valve Lifters | Hydraulic | Hydraulic | Hydraulic | Hydraulic | Hydraulic |
| Carburetor |
Rochester one-barrel |
Rochester four-barrel |
Rochester model 7028071 two-barrel |
Rochesterfour-barrel | Rochester four-barrel |
| Two-speed automatic | $195 |
|---|---|
| Heavy-duty three-speed manual with floor shift | $84 |
| Wheelbase | 108 in. |
| Overall length | 191.6 in. |
| Front tread | 60 in. |
| Rear tread | 60 in. |

1971 Firebird

1971 Firebird

1971 Firebird Formula

1971 Firebird Formula

1971 Firebird Formula

1971 Firebird Formula

1971 Firebird Trans Am