THE LOWDOWN
FLOW FIGURES
Lift Intake Exhaust
0.200 137 110
0.300 196 158
0.400 243 190
0.500 274 207
0.550 280 211
CFM at 28 inches H2O
CAMSHAFT SPECS
Manufacturer Comp Cams
PN 12-415-8
Grind Number NX276HR
Type hydraulic roller
Valve lift at 0.050 0.502/0.520-inch
intake/exhaust
Duration at 0.050 224/236°
intake/exhaust
Lobe separation 113°
DYNO DETAILS
Headers 1 3/4-inch Hedman
long tubes
Advance 36°
Fuel 91-octane unleaded
750-CFM STREET HP
Jets 72/78 primary/secondary
Max torque @ rpm 489 @ 4,600
Max power @ rpm 491 @ 6,000
Average torque 451
Average power 387
383 PULLS
RPM LB-FT HP
2700 398 204
2800 397 212
2900 400 221
3000 408 233
3100 422 249
3200 432 263
3300 443 279
3400 452 293
3500 459 306
3600 466 320
3700 473 333
3800 476 344
3900 481 357
4000 483 368
4100 487 380
4200 489 391
4300 489 400
4400 489 410
4500 489 419
4600 489 428
4700 489 437
4800 487 445
4900 485 452
5000 484 461
5100 481 467
5200 477 472
5300 473 477
5400 469 482
5500 462 484
5600 455 485
5700 450 488
5800 444 490
5900 437 490
6000 429 491
6100 422 490
6200 415 489
6300 406 486
6400 397 484
6500 391 484