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Do we believe in the mathematics behind the Wilson tapered spacer? The numbers don't lie, and the Wilson spacer works as good or better than promised. It should be under the hood of every carburetor-equipped Pontiac. Dyno Testing
| Test 1 | | Holley 850 #83/80 jets, 36-degrees timing | | RPM | HP | Torque | | 3,900 | 371.1 | 501.5 | | 4,000 | 380.8 | 499.7 | | 4,100 | 389.3 | 498.7 | | 4,200 | 399.7 | 499.8 | | 4,300 | 411.2 | 500.3 | | 4,400 | 421.0 | 500.0 | | 4,500 | 428.3 | 497.9 | | 4,600 | 437.6 | 496.9 | | 4,700 | 443.7 | 495.6 | | 4,800 | 453.2 | 493.9 | | 4,900 | 461.3 | 494.0 | | 5,000 | 469.4 | 490.1 | | 5,100 | 472.9 | 486.2 | | 5,200 | 475.8 | 477.7 | | 5,300 | 477.7 | 472.3 | | 5,400 | 483.7 | 468.1 | | 5,500 | 483.6 | 461.5 | | 5,600 | 482.7 | 451.1 | | 5,700 | 482.7 | 442.2 | | 5,800 | 483.5 | 434.7 | | 5,900 | 481.5 | 427.6 | | 6,000 | 478.0 | 417.0 | | 6,100 | 473.6 | 406.3 | | 6,200 | 462.4 | 390.8 |
| Test 2 | | Holley 850 #83/80 jets, 36 degrees timing, 1-inch spacer | | RPM | HP | Torque | | 4,000 | 393.9 | 516.3 | | 4,100 | 402.4 | 515.1 | | 4,200 | 410.5 | 512.6 | | 4,300 | 420.3 | 512.4 | | 4,400 | 429.4 | 511.9 | | 4,500 | 441.5 | 512.5 | | 4,600 | 449.2 | 512.5 | | 4,700 | 459.0 | 510.7 | | 4,800 | 468.3 | 510.5 | | 4,900 | 473.5 | 505.8 | | 5,000 | 479.1 | 501.2 | | 5,100 | 485.0 | 497.4 | | 5,200 | 490.1 | 492.6 | | 5,300 | 492.7 | 485.6 | | 5,400 | 494.7 | 478.8 | | 5,500 | 496.8 | 472.0 | | 5,600 | 497.0 | 464.4 | | 5,700 | 498.5 | 457.7 | | 5,800 | 500.3 | 451.8 | | 5,900 | 496.5 | 441.5 | | 6,000 | 493.6 | 430.4 | | 6,100 | 492.0 | 423.2 | | 6,200 | 490.7 | 415.6 |
| Test 3 | | Holley 850 # 83/80 jets, 36 degrees timing, 2-inch spacer | | RPM | HP | Torque | | 4,000 | 391.9 | 508.8 | | 4,100 | 397.3 | 508.3 | | 4,200 | 406.7 | 508.4 | | 4,300 | 416.9 | 508.3 | | 4,400 | 427.3 | 509.0 | | 4,500 | 435.2 | 507.7 | | 4,600 | 446.4 | 507.9 | | 4,700 | 453.8 | 506.6 | | 4,800 | 461.0 | 504.4 | | 4,900 | 467.2 | 500.7 | | 5,000 | 471.7 | 495.4 | | 5,100 | 476.2 | 500.7 | | 5,200 | 484.0 | 484.0 | | 5,300 | 486.1 | 479.8 | | 5,400 | 489.1 | 473.4 | | 5,500 | 491.8 | 464.4 | | 5,600 | 492.6 | 459.4 | | 5,700 | 494.5 | 453.3 | | 5,800 | 494.2 | 445.2 | | 5,900 | 493.5 | 437.6 | | 6,000 | 489.6 | 427.8 | | 6,100 | 486.6 | 418.8 |
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