| Spring Description | Manley 221423 | |||||||
| Rated Install Height | 1.75 | Max Lift | Spring Rate Slope | |||||
| Coil Bind Height | 1.175 | 0.575 | 4.09 | |||||
| Rated Seat Pressure | 115 | Load Increase | ||||||
| Coil Bind Pressure | 350 | 235 | ||||||
| Spring Rate | 409 | 408.6956522 | ||||||
| Rocker Ratio | 1.6 | 1.7 | 1.8 | 1.84 | 1.9 | |||
| Engine Installed Height | 1.75 | |||||||
| Slope | 4.086956522 | 6.539130435 | 6.947826087 | 7.356521739 | 7.52 | 7.765217391 | ||
| Install Height | PSI @ Valve | PSI @ Cam 1.6 | PSI @ Cam 1.7 | PSI @ Cam 1.8 | PSI @ Cam 1.84 | PSI @ Cam 1.9 | Valve Lift | Lobe Lift |
| 1.80 | 94.56521739 | 151.3043478 | 160.7608696 | 170.2173913 | 174 | 179.673913 | ||
| 1.79 | 98.65217391 | 157.8434783 | 167.7086957 | 177.573913 | 181.52 | 187.4391304 | ||
| 1.78 | 102.7391304 | 164.3826087 | 174.6565217 | 184.9304348 | 189.04 | 195.2043478 | ||
| 1.77 | 106.826087 | 170.9217391 | 181.6043478 | 192.2869565 | 196.56 | 202.9695652 | ||
| 1.76 | 110.9130435 | 177.4608696 | 188.5521739 | 199.6434783 | 204.08 | 210.7347826 | ||
| 1.75 | 115 | 184 | 195.5 | 207 | 211.6 | 218.5 | 0.000 | 0.000 |
| 1.74 | 119.0869565 | 190.5391304 | 202.4478261 | 214.3565217 | 219.12 | 226.2652174 | 0.010 | 0.006 |
| 1.73 | 123.173913 | 197.0782609 | 209.3956522 | 221.7130435 | 226.64 | 234.0304348 | 0.020 | 0.013 |
| 1.72 | 127.2608696 | 203.6173913 | 216.3434783 | 229.0695652 | 234.16 | 241.7956522 | 0.030 | 0.019 |
| 1.71 | 131.3478261 | 210.1565217 | 223.2913043 | 236.426087 | 241.68 | 249.5608696 | 0.040 | 0.025 |
| 1.70 | 135.4347826 | 216.6956522 | 230.2391304 | 243.7826087 | 249.2 | 257.326087 | 0.050 | 0.031 |
| 1.69 | 139.5217391 | 223.2347826 | 237.1869565 | 251.1391304 | 256.72 | 265.0913043 | 0.060 | 0.038 |
| 1.68 | 143.6086957 | 229.773913 | 244.1347826 | 258.4956522 | 264.24 | 272.8565217 | 0.070 | 0.044 |
| 1.67 | 147.6956522 | 236.3130435 | 251.0826087 | 265.8521739 | 271.76 | 280.6217391 | 0.080 | 0.050 |
| 1.66 | 151.7826087 | 242.8521739 | 258.0304348 | 273.2086957 | 279.28 | 288.3869565 | 0.090 | 0.056 |
| 1.65 | 155.8695652 | 249.3913043 | 264.9782609 | 280.5652174 | 286.8 | 296.1521739 | 0.100 | 0.063 |
| 1.64 | 159.9565217 | 255.9304348 | 271.926087 | 287.9217391 | 294.32 | 303.9173913 | 0.110 | 0.069 |
| 1.63 | 164.0434783 | 262.4695652 | 278.873913 | 295.2782609 | 301.84 | 311.6826087 | 0.120 | 0.075 |
| 1.62 | 168.1304348 | 269.0086957 | 285.8217391 | 302.6347826 | 309.36 | 319.4478261 | 0.130 | 0.081 |
| 1.61 | 172.2173913 | 275.5478261 | 292.7695652 | 309.9913043 | 316.88 | 327.2130435 | 0.140 | 0.088 |
| 1.60 | 176.3043478 | 282.0869565 | 299.7173913 | 317.3478261 | 324.4 | 334.9782609 | 0.150 | 0.094 |
| 1.59 | 180.3913043 | 288.626087 | 306.6652174 | 324.7043478 | 331.92 | 342.7434783 | 0.160 | 0.100 |
| 1.58 | 184.4782609 | 295.1652174 | 313.6130435 | 332.0608696 | 339.44 | 350.5086957 | 0.170 | 0.106 |
| 1.57 | 188.5652174 | 301.7043478 | 320.5608696 | 339.4173913 | 346.96 | 358.273913 | 0.180 | 0.113 |
| 1.56 | 192.6521739 | 308.2434783 | 327.5086957 | 346.773913 | 354.48 | 366.0391304 | 0.190 | 0.119 |
| 1.55 | 196.7391304 | 314.7826087 | 334.4565217 | 354.1304348 | 362 | 373.8043478 | 0.200 | 0.125 |
| 1.54 | 200.826087 | 321.3217391 | 341.4043478 | 361.4869565 | 369.52 | 381.5695652 | 0.210 | 0.131 |
| 1.53 | 204.9130435 | 327.8608696 | 348.3521739 | 368.8434783 | 377.04 | 389.3347826 | 0.220 | 0.138 |
| 1.52 | 209 | 334.4 | 355.3 | 376.2 | 384.56 | 397.1 | 0.230 | 0.144 |
| 1.51 | 213.0869565 | 340.9391304 | 362.2478261 | 383.5565217 | 392.08 | 404.8652174 | 0.240 | 0.150 |
| 1.50 | 217.173913 | 347.4782609 | 369.1956522 | 390.9130435 | 399.6 | 412.6304348 | 0.250 | 0.156 |
| 1.49 | 221.2608696 | 354.0173913 | 376.1434783 | 398.2695652 | 407.12 | 420.3956522 | 0.260 | 0.163 |
| 1.48 | 225.3478261 | 360.5565217 | 383.0913043 | 405.626087 | 414.64 | 428.1608696 | 0.270 | 0.169 |
| 1.47 | 229.4347826 | 367.0956522 | 390.0391304 | 412.9826087 | 422.16 | 435.926087 | 0.280 | 0.175 |
| 1.46 | 233.5217391 | 373.6347826 | 396.9869565 | 420.3391304 | 429.68 | 443.6913043 | 0.290 | 0.181 |
| 1.45 | 237.6086957 | 380.173913 | 403.9347826 | 427.6956522 | 437.2 | 451.4565217 | 0.300 | 0.188 |
| 1.44 | 241.6956522 | 386.7130435 | 410.8826087 | 435.0521739 | 444.72 | 459.2217391 | 0.310 | 0.194 |
| 1.43 | 245.7826087 | 393.2521739 | 417.8304348 | 442.4086957 | 452.24 | 466.9869565 | 0.320 | 0.200 |
| 1.42 | 249.8695652 | 399.7913043 | 424.7782609 | 449.7652174 | 459.76 | 474.7521739 | 0.330 | 0.206 |
| 1.41 | 253.9565217 | 406.3304348 | 431.726087 | 457.1217391 | 467.28 | 482.5173913 | 0.340 | 0.213 |
| 1.40 | 258.0434783 | 412.8695652 | 438.673913 | 464.4782609 | 474.8 | 490.2826087 | 0.350 | 0.219 |
| 1.39 | 262.1304348 | 419.4086957 | 445.6217391 | 471.8347826 | 482.32 | 498.0478261 | 0.360 | 0.225 |
| 1.38 | 266.2173913 | 425.9478261 | 452.5695652 | 479.1913043 | 489.84 | 505.8130435 | 0.370 | 0.231 |
| 1.37 | 270.3043478 | 432.4869565 | 459.5173913 | 486.5478261 | 497.36 | 513.5782609 | 0.380 | 0.238 |
| 1.36 | 274.3913043 | 439.026087 | 466.4652174 | 493.9043478 | 504.88 | 521.3434783 | 0.390 | 0.244 |
| 1.35 | 278.4782609 | 445.5652174 | 473.4130435 | 501.2608696 | 512.4 | 529.1086957 | 0.400 | 0.250 |
| 1.34 | 282.5652174 | 452.1043478 | 480.3608696 | 508.6173913 | 519.92 | 536.873913 | 0.410 | 0.256 |
| 1.33 | 286.6521739 | 458.6434783 | 487.3086957 | 515.973913 | 527.44 | 544.6391304 | 0.420 | 0.263 |
| 1.32 | 290.7391304 | 465.1826087 | 494.2565217 | 523.3304348 | 534.96 | 552.4043478 | 0.430 | 0.269 |
| 1.31 | 294.826087 | 471.7217391 | 501.2043478 | 530.6869565 | 542.48 | 560.1695652 | 0.440 | 0.275 |
| 1.30 | 298.9130435 | 478.2608696 | 508.1521739 | 538.0434783 | 550 | 567.9347826 | 0.450 | 0.281 |
| 1.29 | 303 | 484.8 | 515.1 | 545.4 | 557.52 | 575.7 | 0.460 | 0.288 |
| 1.28 | 307.0869565 | 491.3391304 | 522.0478261 | 552.7565217 | 565.04 | 583.4652174 | 0.470 | 0.294 |
| 1.27 | 311.173913 | 497.8782609 | 528.9956522 | 560.1130435 | 572.56 | 591.2304348 | 0.480 | 0.300 |
| 1.26 | 315.2608696 | 504.4173913 | 535.9434783 | 567.4695652 | 580.08 | 598.9956522 | 0.490 | 0.306 |
| 1.25 | 319.3478261 | 510.9565217 | 542.8913043 | 574.826087 | 587.6 | 606.7608696 | 0.500 | 0.313 |
| 1.24 | 323.4347826 | 517.4956522 | 549.8391304 | 582.1826087 | 595.12 | 614.526087 | 0.510 | 0.319 |
| 1.23 | 327.5217391 | 524.0347826 | 556.7869565 | 589.5391304 | 602.64 | 622.2913043 | 0.520 | 0.325 |
| 1.22 | 331.6086957 | 530.573913 | 563.7347826 | 596.8956522 | 610.16 | 630.0565217 | 0.530 | 0.331 |
| 1.21 | 335.6956522 | 537.1130435 | 570.6826087 | 604.2521739 | 617.68 | 637.8217391 | 0.540 | 0.338 |
| 1.20 | 339.7826087 | 543.6521739 | 577.6304348 | 611.6086957 | 625.2 | 645.5869565 | 0.550 | 0.344 |
| 1.19 | 343.8695652 | 550.1913043 | 584.5782609 | 618.9652174 | 632.72 | 653.3521739 | 0.560 | 0.350 |
| 1.18 | 347.9565217 | 556.7304348 | 591.526087 | 626.3217391 | 640.24 | 661.1173913 | 0.570 | 0.356 |
| 1.17 | 352.0434783 | 563.2695652 | 598.473913 | 633.6782609 | 647.76 | 668.8826087 | 0.580 | 0.363 |
| 1.16 | 356.1304348 | 569.8086957 | 605.4217391 | 641.0347826 | 655.28 | 676.6478261 | 0.590 | 0.369 |
| 1.15 | 360.2173913 | 576.3478261 | 612.3695652 | 648.3913043 | 662.8 | 684.4130435 | 0.600 | 0.375 |