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Small Block Chevy Engines - 3-Way Small-Block Showdown
| Camshaft Specifications | | Manufacturer | Comp Cams | | Part Number | 12-678-4 | | Type | Solid flat-tappet | | Valve lift at 0.050 | 0.520/0.540-inch intake/exhaust | | Duration at 0.050 | 244 degrees/252 degrees intake/exhaust | | Lash (cold) | 0.012/0.012 intake/exhaust | | Lash (hot) | 0.016/0.016 intake/exhaust | | Intake centerline | 106 degrees | | Lobe separation | 110 degrees | | Dyno Details | | Headers | 23/4 Hedman long tubes | | Advance | 38 degrees | | Fuel | 91-octane unleaded | | 725-cfm Road Demon | | Max torque at rpm | 398 at 4,900 | | Max power at rpm | 417 at 6,500 | | Average torque | 371 | | Average power | 379 | | 750-cfm Mighty Demon | | Max torque at rpm | 415 at 4,800 | | Max power at rpm | 434 at 6,600 | | Average torque | 389 | | Average power | 397 | | Nitrous Works Plate | 175-Shot | | Advance | 31 degrees | | Max torque at rpm | 581 at 5,300 | | Max power at rpm | 607 at 5,700 | | Average torque | 452 | | Average power | 467 | | Engine Balance | | Rod (rotating) | 449 g | | Rod insert | 39 g | | Oil allowance | 4 g | | Piston | 517 g | | Piston pin | 113 g | | Locks | 4.5 g | | Rings | 47 g | | Rod (reciprocating) | 152.5 g | | Total rotating | 984 g | | Total reciprocating | 834 g | | Total bob-weight | 1818 g | | 355ci Buildsheet | | Specifications not listed are the same as stock. Except as noted, all dimensions are in inches or fractions thereof. All prices sourced through Summit Racing and JEG's. | | Displacement | 355 ci | | Bore x Stroke | 4.030 x 3.480 | | Compression | 10.25:1 | | Rod center-to-center | 5.700 | | Piston deck height | -0.012 | | Chamber volume | 64cc | | Rod-bearing clearance | 0.0027 | | Crank endplay | 0.0060 | | Piston-ring endgap | 0.022 top; 0.024 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) | | W/DEMON 725 | | rpm | Lb-Ft | HP | | 4,000 | 370.6 | 282 | | 4,100 | 369.1 | 288 | | 4,200 | 375.2 | 300 | | 4,300 | 389.7 | 319 | | 4,400 | 394.1 | 330 | | 4,500 | 393.4 | 337 | | 4,600 | 397.2 | 348 | | 4,700 | 397.6 | 356 | | 4,800 | 397.9 | 364 | | 4,900 | 398 | 371 | | 5,000 | 397.1 | 378 | | 5,100 | 396.7 | 385 | | 5,200 | 394.6 | 391 | | 5,300 | 391 | 395 | | 5,400 | 386.9 | 398 | | 5,500 | 384.9 | 403 | | 5,600 | 383 | 408 | | 5,700 | 378.8 | 411 | | 5,800 | 373.3 | 412 | | 5,900 | 366.4 | 412 | | 6,000 | 357.3 | 408 | | 6,100 | 352.1 | 409 | | 6,200 | 346.6 | 409 | | 6,300 | 341.7 | 410 | | 6,400 | 339.4 | 414 | | 6,500 | 337 | 417 | | 6,600 | 331.1 | 416 | | 6,700 | 325.7 | 415 | | 6,800 | 317.7 | 411 | | W/DEMON 750 | | RPM | Lb-Ft | HP | | 4,000 | 407.1 | 310 | | 4,100 | 409 | 319 | | 4,200 | 410.6 | 328 | | 4,300 | 412.9 | 338 | | 4,400 | 411.9 | 345 | | 4,500 | 412.7 | 354 | | 4,600 | 413.6 | 362 | | 4,700 | 415 | 371 | | 4,800 | 415.3 | 380 | | 4,900 | 413.9 | 386 | | 5,000 | 413.6 | 394 | | 5,100 | 412.5 | 401 | | 5,200 | 409.4 | 405 | | 5,300 | 406.3 | 410 | | 5,400 | 403 | 414 | | 5,500 | 401 | 420 | | 5,600 | 397.7 | 424 | | 5,700 | 394.1 | 428 | | 5,800 | 389.8 | 430 | | 5,900 | 378.2 | 425 | | 6,000 | 372.8 | 426 | | 6,100 | 367.4 | 427 | | 6,200 | 362.3 | 428 | | 6,300 | 357.7 | 429 | | 6,400 | 353.9 | 431 | | 6,500 | 349.8 | 433 | | 6,600 | 345.2 | 434 | | 6,700 | 339.7 | 433 | | 6,800 | 331.2 | 429 | | W/Nitrous | | RPM | Lb-Ft | HP | | 4,000 | 384.8 | 293 | | 4,100 | 385.9 | 301 | | 4,200 | 397 | 317 | | 4,300 | 402.4 | 329 | | 4,400 | 404.8 | 339 | | 4,500 | 407.8 | 349 | | 4,600 | 410.1 | 359 | | 4,700 | 408.3 | 365 | | 4,800 | 409.3 | 374 | | 4,900 | 409.4 | 382 | | 5,000 | 409.7 | 390 | | 5,100 | 409.8 | 398 | | 5,200 | 416.8 | 413 | | 5,300 | 580.6 | 586 | | 5,400 | 576.3 | 593 | | 5,500 | 573.1 | 600 | | 5,600 | 568.8 | 606 | | 5,700 | 558.9 | 607 | | 5,800 | 547.6 | 605 | | 5,900 | 532.9 | 599 | | 6,000 | 523.5 | 598 | | 6,100 | 516.3 | 600 | | 6,200 | 510.6 | 603 | | 6,300 | 503.7 | 604 | | 6,400 | 494.9 | 603 | | 6,500 | 355.1 | 439 | | 6,600 | 346.5 | 435 | | 6,700 | 335.3 | 428 | | 6,800 | 325.2 | 421 |
Chevrolet Corvette Research
Review in-depth reviews on the new Chevrolet Corvette, featuring test drives, comparisons, options, features and more. The 2010 Corvette is equipped with a V8 engine, generating 505 horsepower, and it has drivers side crash test ratings of 8 stars and passengers side crash test ratings of 8 stars.
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