3-Way Small-Block Showdown
| Camshaft Specifications | | Manufacturer | Isky | | Part Number | 201292 | | Type | Hydraulic flat-tappet | | Valve lift | 0.505/0.505-inch intake/exhaust | | Duration at 0.050 | 244 degrees /244 degrees intake/exhaust | | Lobe center | 108 | | Dyno Details | | Headers | 23/4 long tubes | | Advance | 38 | | Fuel | 91-octane unleaded | | On the Motor | | Max torque at rpm | 481 at 4,100 | | Max power at rpm | 439 at 5,400 | | Average torque | 450 | | Average power | 386 | | Nitrous Works Plate | 125-Shot | | Advance | 31 degrees | | Max torque at rpm | 663 at 4,400 | | Max power at rpm | 579 at 5,200 | | Average torque | 492 | | Average power | 421 | | 396ci Buildsheet | | Specifications not listed are the same as stock. Except as noted, all dimensions are in inches or fractions thereof. All prices sourced through Larry's Performance. | | Displacement | 396 ci | | Bore x Stroke | 4.030 x 3.8750 | | Compression | 11:1 | | Rod center-to-center | 6.00 | | Piston deck height | 0.015 | | Compression height | 1.062 | | Chamber volume | 64cc | | Rod-bearing clearance | 0.0020 | | Crank endplay | 0.0060 | | Piston-ring endgap | 0.020 top; 0.030, second | | Main bearing-cap torque | 65 lb-ft (moly-lube) | | Rod-bolt torque | 50 lb-ft (moly-lube) | | Head-bolt torque | 65/70 lb-ft (moly-lube) |
| Motor Only |
|---|
| RPM | lb-ft | Hp | | 3,200 | 448.2 | 273 | | 3,300 | 450.7 | 283 | | 3,400 | 452.4 | 293 | | 3,500 | 458.6 | 306 | | 3,600 | 466 | 319 | | 3,700 | 472.2 | 333 | | 3,800 | 476.8 | 345 | | 3,900 | 479.1 | 356 | | 4,000 | 478.7 | 365 | | 4,100 | 480.6 | 375 | | 4,200 | 478.1 | 382 | | 4,300 | 477.4 | 391 | | 4,400 | 473.1 | 396 | | 4,500 | 469.8 | 403 | | 4,600 | 465.7 | 408 | | 4,700 | 462.2 | 414 | | 4,800 | 459.2 | 420 | | 4,900 | 453.5 | 423 | | 5,000 | 448.8 | 427 | | 5,100 | 441.4 | 429 | | 5,200 | 437.3 | 433 | | 5,300 | 432.5 | 436 | | 5,400 | 427.3 | 439 | | 5,500 | 416.9 | 437 | | 5,600 | 408.2 | 435 | | 5,700 | 399.4 | 433 | | 5,800 | 390.9 | 432 | | 5,900 | 381.4 | 428 |
| With Nitrous |
|---|
| RPM | lb-ft | Hp | | 3,000 | 392.7 | 224 | | 3,100 | 393.9 | 232 | | 3,200 | 396 | 241 | | 3,300 | 401.2 | 252 | | 3,400 | 406.3 | 263 | | 3,500 | 414 | 276 | | 3,600 | 426.5 | 292 | | 3,700 | 441.8 | 311 | | 3,800 | 446.2 | 323 | | 3,900 | 447.4 | 332 | | 4,000 | 452.6 | 345 | | 4,100 | 452.7 | 353 | | 4,200 | 465.4 | 372 | | 4,300 | 482.3 | 395 | | 4,400 | 662.6 | 555 | | 4,500 | 653.3 | 560 | | 4,600 | 644.8 | 565 | | 4,700 | 632.5 | 566 | | 4,800 | 622.6 | 569 | | 4,900 | 613.4 | 572 | | 5,000 | 605.8 | 577 | | 5,100 | 594.4 | 577 | | 5,200 | 585 | 579 | | 5,300 | 572.1 | 577 | | 5,400 | 561 | 577 | | 5,500 | 422.2 | 442 | | 5,600 | 410 | 437 | | 5,700 | 396.9 | 431 | | 5,800 | 384.7 | 425 | | 5,900 | 376.4 | 423 |
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