Dyno Test Results
Stock Three-Valve short-block
Stock: Stock heads and cams
Heads: Livernois CNC-ported Three-Valve Heads
Cam + Heads: Livernois CNC-ported heads and Comp Cams Stage 4 camshafts
| Horsepower | Torque |
| RPM | Stock HP | Heads HP | Cam + | RPM | Stock TQ | Heads TQ | Cam + |
| | Heads HP | | Heads TQ |
| 2500 | | 130 | 150 | 2500 | | 249 | 301 |
| 2600 | 134 | 154 | 2600 | 255 | 302 |
| 2700 | 142 | 161 | 2700 | 261 | 304 |
| 2800 | 158 | 166 | 2800 | 267 | 305 |
| 2900 | 166 | 171 | 2900 | 272 | 306 |
| 3000 | 171 | 178 | 3000 | 276 | 307 |
| 3100 | 163 | 174 | 184 | 3100 | 258 | 282 | 312 |
| 3200 | 171 | 182 | 211 | 3200 | 261 | 288 | 322 |
| 3300 | 182 | 201 | 222 | 3300 | 261 | 289 | 331 |
| 3400 | 193 | 215 | 232 | 3400 | 263 | 292 | 340 |
| 3500 | 204 | 226 | 241 | 3500 | 266 | 293 | 345 |
| 3600 | 213 | 238 | 246 | 3600 | 272 | 295 | 348 |
| 3700 | 217 | 245 | 252 | 3700 | 278 | 298 | 351 |
| 3800 | 221 | 250 | 260 | 3800 | 279 | 298 | 355 |
| 3900 | 224 | 254 | 271 | 3900 | 285 | 301 | 357 |
| 4000 | 232 | 260 | 276 | 4000 | 292 | 308 | 359 |
| 4100 | 241 | 265 | 282 | 4100 | 301 | 312 | 361 |
| 4200 | 247 | 271 | 291 | 4200 | 308 | 319 | 362 |
| 4300 | 252 | 278 | 302 | 4300 | 314 | 324 | 362 |
| 4400 | 259 | 288 | 311 | 4400 | 314 | 329 | 364 |
| 4500 | 264 | 299 | 322 | 4500 | 312 | 335 | 365 |
| 4600 | 271 | 310 | 332 | 4600 | 309 | 338 | 366 |
| 4700 | 276 | 322 | 341 | 4700 | 307 | 342 | 366 |
| 4800 | 279 | 331 | 350 | 4800 | 304 | 346 | 368 |
| 4900 | 284 | 336 | 354 | 4900 | 303 | 349 | 370 |
| 5000 | 292 | 344 | 362 | 5000 | 303 | 351 | 371 |
| 5100 | 296 | 351 | 370 | 5100 | 302 | 352 | 373 |
| 5200 | 301 | 354 | 376 | 5200 | 301 | 354 | 376 |
| 5300 | 306 | 363 | 382 | 5300 | 298 | 349 | 384 |
| 5400 | 310 | 369 | 387 | 5400 | 297 | 346 | 394 |
| 5500 | 313 | 374 | 391 | 5500 | 294 | 342 | 401 |
| 5600 | 309 | 380 | 394 | 5600 | 290 | 339 | 388 |
| 5700 | 302 | 385 | 398 | 5700 | 286 | 333 | 365 |
| 5800 | 301 | 390 | 406 | 5800 | 280 | 330 | 362 |
| 5900 | | 398 | 410 | 5900 | | 326 | 360 |
| 6000 | | 408 | 414 | 6000 | 320 | 358 |
| 6100 | | 420 | 421 | 6100 | 315 | 355 |
| 6200 | 408 | 433 | 6200 | 309 | 341 |
| 6300 | 412 | 439 | 6300 | 302 | 336 |
| 6400 | 410 | 445 | 6400 | 296 | 322 |
| 6500 | 405 | 451 | 6500 | 291 | 310 |
| 6600 | 404 | 445 | 6600 | 284 | 299 |
| 6700 | 401 | 440 | 6700 | 280 | 291 |
| 6800 | 398 | 439 | 6800 | 276 | 285 |
 Once we dyno'd the engine...  Once we dyno'd the engine with the ported heads and stock cams, it was time to take off the valve covers and front cover. We had to remove the chains and then extract the stock cams from the top of the heads. |  Here is the cam sprocket that...  Here is the cam sprocket that includes a special oiling system and a huge spring. It is required in order to change camshaft timing while the engine is running. |  Cam caps hold the cam in place,...  Cam caps hold the cam in place, much like a main cap on an engine block. |