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A jet change for the Demon... A jet change for the Demon was needed, so the fuel bowls were drained. The carburetor had No. 84 jets in the primary metering block and No. 88 jets in the secondary side. Mark Erney changed them to No. 88/No. 94 primary and secondary, respectively. The performance now equaled the Holley at 483.4 hp. | Test 3 | | Jim Taylor Holley 850 DP, No. 83/80 jets, 36 deg timing, 1-inch Wilson spacer | | RPM | Corr. HP | Corr. Torque | | 4,000 | 395.4 | 516.6 | | 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 |
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