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Home of the Red Headed Stepchildren of the 2nd gen Camaros!
It started with my rebuilding the front suspension on my camaro. I wanted to match the spring rates from a WS6 Trans Am to my WS6 swaybars. I could not find the info anywhere. At all. I found some snippets on NastyZ28.com and some other chevy sites, but no comprehensive listing. I hope to provide this here.
Most of us just want to know what Moog spring we need to do what we want to do. TRW/Moog are easily available and inexpensive. These numbers are from the TRW/Federal Mogul Coil Springs Catalog X-4010, dated 1997. TRW's web site lists this as their latest catalog. Since leaving TRW, Federal-Mogul has reportedly been dropping spring numbers from their catalogs. I hope to find older Moog catalogs to see if they list more spring numbers, just for grins.
Moog Chart - Camaro 2nd Generation Camaro Moog part numbers
Rate
Chart - Camaro 2nd Generation Camaro Moog spring
rates
Moog
Chart - Firebird 2nd Generation Firebird Moog
part numbers
Rate
Chart - Firebird 2nd Generation Firebird Moog
spring rates
Spring
Comparison A chart comparing popular spring
installed heights
These are the twelve springs listed for the 70-81 F-Body Camaros
| Part | Spring | Load | Install | Free | Inside | Bar |
| Number | Rate (lbs) | lbs. | Height | Height | Diameter | Diameter |
| 574 | 329 | 2184 | 10.5 | 17.14 | 4.09 | 0.672 |
| 576 | 329 | 2310 | 10.5 | 17.52 | 4.09 | 0.672 |
| 580 | 340 | 2485 | 10.0 | 17.31 | 4.08 | 0.69 |
| 586 | 432.6 | 2705 | 10.0 | 16.31 | 4.08 | 0.718 |
| 590 | 399.2 | 2374 | 10.5 | 16.35 | 4.08 | 0.705 |
| 5006 | 355 | 2480 | 10.0 | 16.99 | 4.08 | 0.69 |
| 5276 | 303 | 1983 | 10.5 | 17.05 | 4.09 | 0.656 |
| 5278 | 298 | 2083 | 10.5 | 17.05 | 4.09 | 0.656 |
| 5384 | 294 | 1942 | 11.5 | 18.11 | 4.09 | 0.672 |
| 6450 | 406 | 1881 | 11.25 | 15.93 | 4.08 | 0.705 |
| 6486 | 343 | 1935 | 11.0 | 16.63 | 4.08 | 0.672 |
| 8002 | 414 | 2329 | 10.5 | 16.12 | 4.04 | 0.705 |
Here is a chart listing a grouping of similar springs, straight from the catalog. These were listed by Inside Diameter; for the 2nd gen F-bodies, mostly 4.080" and 4.090".These are listed for reference ONLY, I do not know for certain if they would work. I do know, however, that the 75-79 Novas used the 2nd gen subframe and they used the CS5276 and CS5278 springs for V-8's, but they used the CS5604 (347 lbs.) for the standard duty 6 cylinder cars, and the CS5642 (420 lbs) for the Heavy Duty 6 cylinder cars. Stock Camaro springs are in bold.
| Part | Inside | Bar | Install | Load | Spring | Free |
| Number | Diameter | Diameter | Height | lbs. | Rate | Height |
| CR578 | 4.080 | 0.700 | 11.00 | 2325.0 | 357.6 | 17.50 |
| CR580 | 4.080 | 0.690 | 10.00 | 2485.0 | 340.0 | 17.31 |
| CR584 | 4.080 | 0.718 | 10.00 | 2800.0 | 441.0 | 16.40 |
| CR586 | 4.080 | 0.718 | 10.00 | 2705.0 | 432.6 | 16.31 |
| CR590 | 4.080 | 0.705 | 10.50 | 2374.0 | 399.2 | 16.35 |
| C650 | 4.080 | 0.906 | 13.00 | 2669.0 | 1090.0 | 15.44 |
| C650 | 4.080 | 0.906 | 13.00 | 2170.0 | 1025.0 | 15.00 |
| CR5006 | 4.080 | 0.690 | 10.00 | 2480.0 | 355.0 | 16.99 |
| CR5030 | 4.080 | 0.718 | 10.00 | 2900.0 | 419.0 | 17.05 |
| CR5032 | 4.080 | 0.750 | 10.00 | 3125.0 | 460.0 | 16.65 |
| CR5044 | 4.080 | 0.690 | 11.00 | 2360.0 | 334.0 | 18.06 |
| CR5268 | 4.080 | 0.705 | 11.00 | 2450.0 | 370.0 | 17.62 |
| CR5270 | 4.080 | 0.705 | 11.00 | 2550.0 | 362.0 | 18.04 |
| CS396 | 4.080 | 0.718 | 12.00 | 2050.0 | 389.0 | 17.39 |
| CS402 | 4.080 | 0.690 | 12.00 | 1907.0 | 337.5 | 17.65 |
| CS404 | 4.080 | 0.690 | 12.00 | 1840.0 | 352.0 | 17.28 |
| CS406 | 4.080 | 0.690 | 11.50 | 2249.0 | 321.0 | 18.66 |
| CS534 | 4.080 | 0.750 | 11.00 | 2552.0 | 500.0 | 15.87 |
| CS5556 | 4.080 | 0.750 | 11.00 | 2842.0 | 441.5 | 17.14 |
| CS5606 | 4.080 | 0.687 | 11.00 | 1530.0 | 421.0 | 14.63 |
| CS5608 | 4.080 | 0.687 | 11.00 | 1640.0 | 421.0 | 14.88 |
| CS5610 | 4.080 | 0.687 | 11.00 | 1750.0 | 421.0 | 15.19 |
| CS5612 | 4.080 | 0.718 | 12.00 | 2265.0 | 388.0 | 17.96 |
| CS5642 | 4.080 | 0.690 | 11.00 | 1860.0 | 420.0 | 15.39 |
| CS5660 | 4.080 | 0.718 | 10.75 | 1538.0 | 598.0 | 13.26 |
| CS6450 | 4.080 | 0.705 | 11.25 | 1881.0 | 406.0 | 15.93 |
| CS6486 | 4.080 | 0.672 | 11.00 | 1935.0 | 343.0 | 16.63 |
| CS5662 | 4.085 | 0.750 | 10.75 | 1690.0 | 649.0 | 13.23 |
| CS5664 | 4.085 | 0.765 | 10.75 | 1863.0 | 707.0 | 13.50 |
| CS574 | 4.090 | 0.672 | 10.50 | 2184.0 | 329.0 | 17.14 |
| CS576 | 4.090 | 0.672 | 10.50 | 2310.0 | 329.0 | 17.52 |
| CS5276 | 4.090 | 0.656 | 10.50 | 1983.0 | 303.0 | 17.05 |
| CS5278 | 4.090 | 0.656 | 10.50 | 2083.0 | 298.0 | 17.05 |
| CS5330 | 4.090 | 0.672 | 11.00 | 2300.0 | 306.0 | 18.52 |
| CS5332 | 4.090 | 0.656 | 10.50 | 2308.0 | 298.0 | 18.25 |
| CS5376 | 4.090 | 0.672 | 12.00 | 1886.0 | 319.0 | 17.92 |
| CS5378 | 4.090 | 0.672 | 11.50 | 2062.0 | 294.0 | 18.51 |
| CS5384 | 4.090 | 0.672 | 11.50 | 1942.0 | 294.0 | 18.11 |
| CS5596 | 4.090 | 0.672 | 11.00 | 1440.0 | 346.0 | 15.19 |
| CS5598 | 4.090 | 0.672 | 11.00 | 1520.0 | 346.5 | 15.38 |
| CS5600 | 4.090 | 0.672 | 11.00 | 1600.0 | 347.0 | 15.63 |
| CS5602 | 4.090 | 0.672 | 11.00 | 1680.0 | 347.0 | 15.88 |
| CS5604 | 4.090 | 0.672 | 11.00 | 1760.0 | 347.0 | 16.00 |