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Big Torque 383 Build - Build A 475hp 383 For $4,719.67

Big Torque 383 Build Camshaft
Dyno test 2 used the Camshaft... 
   
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Big Torque 383 Build Camshaft
Dyno test 2 used the Camshaft Innovations mechanical flat-tappet cam with a steeper 1.7:1 rocker ratio and the suggested 0.016-inch lash. This stout rocker ratio accelerates the valve very quickly, which means it might float the valves sooner than a 1.6:1 ratio, but that extra lift definitely pumped the torque and horsepower all the way to 6,500 rpm.
TEST 1 TEST 2
RPM TQ HP TQ HP
2,500 375 179 345 164
2,700 374 192 348 179
2,900 381 210 356 197
3,100 398 235 375 221
3,300 417 262 398 250
3,500 434 289 416 277
3,700 445 313 435 306
3,900 451 335 447 332
4,100 458 357 458 357
4,300 460 377 464 380
4,500 461 395 467 400
4,700 459 410 466 417
4,900 452 421 464 433
5,100 443 430 461 448
5,300 434 438 454 458
5,500 419 439 445 466
5,700 403 437 434 471
5,900 389 437 423 475
6,100 410 477
6,300 396 475
6,500 383 474
Peak 461 439 467 477
Averages 425.2 345.8 426.4 350.7


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