| Test 1 Stock Baseline | Test 2 Weiand 8004 | Test 3 COMP 1.5 rockers | Test 4 Retard cam -2 degrees |
| RPM | TQ | HP | TQ | HP | TQ | HP | TQ | HP |
| 2600 | 389 | 193 | 384 | 190 | 385 | 190 | 379 | 188 |
| 2800 | 385 | 205 | 381 | 203 | 382 | 203 | 377 | 201 |
| 3000 | 388 | 222 | 384 | 219 | 389 | 222 | 384 | 219 |
| 3200 | 395 | 241 | 391 | 238 | 396 | 241 | 395 | 241 |
| 3400 | 393 | 255 | 391 | 253 | 399 | 258 | 398 | 257 |
| 3600 | 393 | 270 | 394 | 270 | 402 | 276 | 401 | 275 |
| 3800 | 389 | 282 | 394 | 285 | 404 | 292 | 405 | 293 |
| 4000 | 383 | 292 | 390 | 297 | 404 | 307 | 403 | 307 |
| 4200 | 374 | 299 | 384 | 307 | 398 | 318 | 398 | 319 |
| 4400 | 363 | 304 | 375 | 314 | 391 | 327 | 395 | 331 |
| 4600 | 351 | 307 | 367 | 322 | 384 | 336 | 388 | 340 |
| 4800 | 337 | 308 | 354 | 324 | 374 | 342 | 380 | 347 |
| 5000 | 322 | 306 | 339 | 323 | 356 | 339 | 366 | 349 |
| Max | 395 | 308 | 394 | 325 | 404 | 342 | 405 | 349 |
| Avg | 376 | 266 | 380 | 270 | 390 | 278 | 390 | 278 |
| Test 5 ? Headers | Test 6 Full roller 1.5 rockers | Test 7 COMP XE256H | | RPM | TQ | HP | TQ | HP | TQ | HP |
| 2600 | 377 | 187 | 380 | 188 | 387 | 191 |
| 2800 | 381 | 203 | 382 | 204 | 394 | 210 |
| 3000 | 390 | 222 | 391 | 223 | 401 | 229 |
| 3200 | 396 | 241 | 401 | 244 | 411 | 250 |
| 3400 | 400 | 260 | 403 | 261 | 413 | 267 |
| 3600 | 403 | 276 | 405 | 277 | 413 | 283 |
| 3800 | 407 | 294 | 406 | 294 | 413 | 298 |
| 4000 | 405 | 308 | 407 | 310 | 412 | 314 |
| 4200 | 401 | 321 | 402 | 322 | 406 | 325 |
| 4400 | 395 | 331 | 367 | 332 | 402 | 337 |
| 4600 | 387 | 339 | 388 | 340 | 394 | 345 |
| 4800 | 380 | 347 | 380 | 347 | 385 | 352 |
| 5000 | 368 | 350 | 368 | 350 | 375 | 357 |
| 5200 | 354 | 350 | 353 | 349 | 348 | 354 |
| 5400 | N/A | N/A | 339 | 349 | 348 | 357 |
| 5600 | N/A | N/A | N/A | N/A | 334 | 356 |
| Max | 407 | 351 | 407 | 351 | 413 | 357 |
| Avg | 388 | 287 | 389 | 288 | 396 | 293 |
| Test 9 Speed Demon 750 | Test 10 Air Gap intake | Test 12 COMP XE262H | | RPM | TQ | HP | TQ | HP | TQ | HP |
| 2600 | 393 | 194 | 411 | 203 | 396 | 196 |
| 2800 | 395 | 211 | 413 | 220 | 404 | 215 |
| 3000 | 403 | 230 | 420 | 240 | 416 | 237 |
| 3200 | 413 | 252 | 430 | 262 | 429 | 261 |
| 3400 | 416 | 269 | 436 | 282 | 429 | 278 |
| 3600 | 415 | 284 | 438 | 300 | 435 | 298 |
| 3800 | 416 | 301 | 437 | 316 | 437 | 316 |
| 4000 | 414 | 315 | 437 | 333 | 438 | 334 |
| 4200 | 408 | 327 | 435 | 348 | 436 | 348 |
| 4400 | 402 | 337 | 429 | 359 | 432 | 362 |
| 4600 | 394 | 345 | 421 | 369 | 424 | 371 |
| 4800 | 386 | 352 | 411 | 376 | 417 | 381 |
| 5000 | 373 | 356 | 398 | 379 | 405 | 386 |
| 5200 | 359 | 355 | 380 | 376 | 389 | 385 |
| 5400 | 346 | 356 | 365 | 375 | 375 | 386 |
| 5600 | 331 | 353 | 347 | 370 | 360 | 384 |
| Max | 418 | 356 | 438 | 380 | 438 | 386 |
| Avg | 398 | 294 | 416 | 315 | 416 | 316 |