Spring Description GM LS6 Yellow
Rated Install Height 1.8 Max Lift  Spring Rate Slope
Coil Bind Height 1.2 0.6 3.70
Rated Seat Pressure 90 Load Increase
Coil Bind Pressure 312 222
Spring Rate 370 370
Rocker Ratio 1.6 1.7 1.8 1.84 1.9
Engine Installed Height 1.8
Slope 3.7 5.92 6.29 6.66 6.808 7.03
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
1.85 71.5 114.4 121.55 128.7 131.56 135.85
1.84 75.2 120.32 127.84 135.36 138.368 142.88
1.83 78.9 126.24 134.13 142.02 145.176 149.91
1.82 82.6 132.16 140.42 148.68 151.984 156.94
1.81 86.3 138.08 146.71 155.34 158.792 163.97
1.80 90 144 153 162 165.6 171 0.000 0.000
1.79 93.7 149.92 159.29 168.66 172.408 178.03 0.010 0.006
1.78 97.4 155.84 165.58 175.32 179.216 185.06 0.020 0.013
1.77 101.1 161.76 171.87 181.98 186.024 192.09 0.030 0.019
1.76 104.8 167.68 178.16 188.64 192.832 199.12 0.040 0.025
1.75 108.5 173.6 184.45 195.3 199.64 206.15 0.050 0.031
1.74 112.2 179.52 190.74 201.96 206.448 213.18 0.060 0.038
1.73 115.9 185.44 197.03 208.62 213.256 220.21 0.070 0.044
1.72 119.6 191.36 203.32 215.28 220.064 227.24 0.080 0.050
1.71 123.3 197.28 209.61 221.94 226.872 234.27 0.090 0.056
1.70 127 203.2 215.9 228.6 233.68 241.3 0.100 0.063
1.69 130.7 209.12 222.19 235.26 240.488 248.33 0.110 0.069
1.68 134.4 215.04 228.48 241.92 247.296 255.36 0.120 0.075
1.67 138.1 220.96 234.77 248.58 254.104 262.39 0.130 0.081
1.66 141.8 226.88 241.06 255.24 260.912 269.42 0.140 0.088
1.65 145.5 232.8 247.35 261.9 267.72 276.45 0.150 0.094
1.64 149.2 238.72 253.64 268.56 274.528 283.48 0.160 0.100
1.63 152.9 244.64 259.93 275.22 281.336 290.51 0.170 0.106
1.62 156.6 250.56 266.22 281.88 288.144 297.54 0.180 0.113
1.61 160.3 256.48 272.51 288.54 294.952 304.57 0.190 0.119
1.60 164 262.4 278.8 295.2 301.76 311.6 0.200 0.125
1.59 167.7 268.32 285.09 301.86 308.568 318.63 0.210 0.131
1.58 171.4 274.24 291.38 308.52 315.376 325.66 0.220 0.138
1.57 175.1 280.16 297.67 315.18 322.184 332.69 0.230 0.144
1.56 178.8 286.08 303.96 321.84 328.992 339.72 0.240 0.150
1.55 182.5 292 310.25 328.5 335.8 346.75 0.250 0.156
1.54 186.2 297.92 316.54 335.16 342.608 353.78 0.260 0.163
1.53 189.9 303.84 322.83 341.82 349.416 360.81 0.270 0.169
1.52 193.6 309.76 329.12 348.48 356.224 367.84 0.280 0.175
1.51 197.3 315.68 335.41 355.14 363.032 374.87 0.290 0.181
1.50 201 321.6 341.7 361.8 369.84 381.9 0.300 0.188
1.49 204.7 327.52 347.99 368.46 376.648 388.93 0.310 0.194
1.48 208.4 333.44 354.28 375.12 383.456 395.96 0.320 0.200
1.47 212.1 339.36 360.57 381.78 390.264 402.99 0.330 0.206
1.46 215.8 345.28 366.86 388.44 397.072 410.02 0.340 0.213
1.45 219.5 351.2 373.15 395.1 403.88 417.05 0.350 0.219
1.44 223.2 357.12 379.44 401.76 410.688 424.08 0.360 0.225
1.43 226.9 363.04 385.73 408.42 417.496 431.11 0.370 0.231
1.42 230.6 368.96 392.02 415.08 424.304 438.14 0.380 0.238
1.41 234.3 374.88 398.31 421.74 431.112 445.17 0.390 0.244
1.40 238 380.8 404.6 428.4 437.92 452.2 0.400 0.250
1.39 241.7 386.72 410.89 435.06 444.728 459.23 0.410 0.256
1.38 245.4 392.64 417.18 441.72 451.536 466.26 0.420 0.263
1.37 249.1 398.56 423.47 448.38 458.344 473.29 0.430 0.269
1.36 252.8 404.48 429.76 455.04 465.152 480.32 0.440 0.275
1.35 256.5 410.4 436.05 461.7 471.96 487.35 0.450 0.281
1.34 260.2 416.32 442.34 468.36 478.768 494.38 0.460 0.288
1.33 263.9 422.24 448.63 475.02 485.576 501.41 0.470 0.294
1.32 267.6 428.16 454.92 481.68 492.384 508.44 0.480 0.300
1.31 271.3 434.08 461.21 488.34 499.192 515.47 0.490 0.306
1.30 275 440 467.5 495 506 522.5 0.500 0.313
1.29 278.7 445.92 473.79 501.66 512.808 529.53 0.510 0.319
1.28 282.4 451.84 480.08 508.32 519.616 536.56 0.520 0.325
1.27 286.1 457.76 486.37 514.98 526.424 543.59 0.530 0.331
1.26 289.8 463.68 492.66 521.64 533.232 550.62 0.540 0.338
1.25 293.5 469.6 498.95 528.3 540.04 557.65 0.550 0.344
1.24 297.2 475.52 505.24 534.96 546.848 564.68 0.560 0.350
1.23 300.9 481.44 511.53 541.62 553.656 571.71 0.570 0.356
1.22 304.6 487.36 517.82 548.28 560.464 578.74 0.580 0.363
1.21 308.3 493.28 524.11 554.94 567.272 585.77 0.590 0.369
1.20 312 499.2 530.4 561.6 574.08 592.8 0.600 0.375