Poll for Minimum Torque for a performance street Machine?
On the dyno a stock 340 only dyno'd 328 lbs-ft with bolt-ons got up to 411, it's safe to say a stock 340 is a performance engine.
https://www.motortrend.com/how-to/mopp-0102-1970-340-high-performance-mill-dyno/
Phase 1: Stock 340 baseline, Chrysler electronic ignition
Phase 2: Replace small production AVS with Edelbrock 800 CFM carb
Phase 3: Replace factory HP manifolds with Hooker 151/48-inch headers
Phase 4: Replace factory iron 340 HP intake with Edelbrock Performer RPM Air Gap
Phase 5: Replace SSI springs and retainers with Engle #604LS retainers and #993 springs
Phase 6: Replace stock 340 HP cam with Comp Xtreme Energy 268
| Dyno Results | | | | | | |
| Westech Performance Group | | | | | | |
| Superflow Dyno | | | | | | |
| Horsepower | | | | | | |
| RPM | Phase 1 | Phase 2 | Phase 3 | Phase 4 | Phase 5 | Phase 6 |
| 3000 | 185.2 | 195.5 | 199.6 | 206.4 | 206.2 | 214.7 |
| 3200 | 195.4 | 206.1 | 213.9 | 220.7 | 220.8 | 229.3 |
| 3400 | 208.9 | 224.6 | 233.0 | 240.6 | 240.5 | 251.5 |
| 3600 | 224.8 | 238.7 | 252.7 | 260.8 | 259.9 | 275.7 |
| 3800 | 236.4 | 253.7 | 266.6 | 277.0 | 276.9 | 298.1 |
| 4000 | 249.5 | 267.6 | 280.0 | 291.8 | 291.8 | 311.7 |
| 4200 | 259.3 | 278.9 | 292.9 | 306.0 | 306.2 | 327.1 |
| 4400 | 265.0 | 287.1 | 304.3 | 321.3 | 321.3 | 344.6 |
| 4600 | 268.8 | 297.2 | 313.3 | 335.2 | 334.7 | 355.9 |
| 4800 | 274.7 | 306.8 | 321.1 | 343.1 | 342.5 | 366.7 |
| 5000 | 278.5 | 312.7 | 329.1 | 352.6 | 350.4 | 377.0 |
| 5100 | 280.2 | 316.9 | 330.6 | 354.5 | 352.4 | 381.3 |
| 5200 | 281.3 | 316.9 | 330.8 | 353.6 | 353.6 | 384.3 |
| 5400 | 273.7 | 314.9 | 329.3 | 350.8 | 355.4 | 386.1 |
| 5500 | 273.5 | 313.9 | 330.4 | 350.7 | 355.9 | 387.4 |
| 5600 | 269.3 | 314.5 | 330.2 | 350.9 | 353.5 | 389.4 |
| 5700 | | 312.7 | 329.3 | 348.6 | 353.3 | 391.6 |
| 5800 | | 308.8 | 326.2 | 347.6 | 351.4 | 387.2 |
| 6000 | | | | 329.2 | 353.4 | 383.7 |
| 6200 | | | | | 314.8 | 373.7 |
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| Torque | | | | | | |
| RPM | Phase 1 | Phase 2 | Phase 3 | Phase 4 | Phase 5 | Phase 6 |
| 3000 | 324.2 | 342.3 | 349.5 | 361.4 | 361.0 | 375.8 |
| 3200 | 320.7 | 338.3 | 351.1 | 362.3 | 362.3 | 376.4 |
| 3400 | 322.7 | 347.0 | 359.9 | 371.6 | 371.5 | 388.4 |
| 3600 | 328.0 | 348.2 | 368.7 | 380.4 | 379.1 | 402.2 |
| 3800 | 326.8 | 350.7 | 368.4 | 382.9 | 382.7 | 412.0 |
| 4000 | 327.6 | 351.3 | 367.6 | 383.1 | 383.1 | 409.3 |
| 4200 | 324.3 | 348.8 | 366.3 | 382.7 | 382.9 | 409.0 |
| 4400 | 316.4 | 342.7 | 363.2 | 383.5 | 383.6 | 411.4 |
| 4600 | 306.9 | 339.3 | 357.7 | 382.7 | 382.1 | 406.3 |
| 4800 | 300.6 | 335.7 | 351.4 | 375.4 | 374.8 | 401.3 |
| 5000 | 292.6 | 328.5 | 345.7 | 370.4 | 368.1 | 396.0 |
| 5200 | 284.1 | 320.1 | 334.1 | 357.2 | 357.1 | 388.1 |
| 5400 | 266.2 | 306.3 | 320.3 | 341.2 | 345.6 | 375.5 |
| 5600 | 252.6 | 295.0 | 309.7 | 329.1 | 331.7 | 365.2 |
| 5800 | | 279.6 | 295.4 | 314.8 | 318.2 | 350.6 |
| 6000 | | | | 288.1 | 309.3 | 335.8 |
| 6200 | | | | | 266.7 | 316.6 |
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