THE LOWDOWN
FLOW FIGURES
Lift Intake Exhaust
0.200 139 114
0.300 193 145
0.400 231 164
0.500 249 172
0.550 253 173
CFM at 28 inches H2O
CAMSHAFT SPECS
Manufacturer Elgin
PN E920P
Type hydraulic flat tappet
Valve lift at 0.050 0.480/0.480-inch intake/exhaust
Duration at 0.050 230/230° intake/
exhaust
Lobe separation 114°
DYNO DETAILS
Headers 1 3/4-inch Hedman
  long tubes
Advance 39°
Fuel 91-octane unleaded
650-CFM STREET HP
Jets 67/73 primary/
  secondary
Max torque @ rpm 382 @ 4,500
Max power @ rpm 391 @ 5,600
Average torque 361
Average power 298
327 PULLS
RPM LB-FT HP
2600 316 156
2700 314 161
2800 315 168
2900 320 177
3000 330 189
3100 343 202
3200 351 214
3300 358 225
3400 365 236
3500 369 246
3600 370 254
3700 374 263
3800 377 273
3900 380 282
4000 380 290
4100 380 297
4200 381 305
4300 382 313
4400 382 320
4500 382 327
4600 381 334
4700 381 341
4800 381 348
4900 381 356
5000 380 362
5100 378 367
5200 376 372
5300 375 378
5400 374 384
5500 371 389
5600 366 391
5700 359 390
5800 352 389
5900 345 388
6000 339 387
6100 331 385