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Home of the Red Headed Stepchildren of the 2nd gen Camaros!
I created this sheet in order to get an idea of what were the stock spring rates for a given model and year.
FIREBIRD | FRONT | ||||||
Manual Trans. | Auto Trans. | ||||||
Year | Cyl. | Eng. | Description | No A/C | With A/C | No A/C | With A/C |
1981 | 6 | All | All | 406 lbs* | 298 lbs | 406 lbs* | 298 lbs |
8 | 4.3 | All, Incl. Esprit | 298 lbs | 355 lbs | 298 lbs | 355 lbs | |
8 | 4.3 | All, Incl. Esprit | 406 lbs* | 414 lbs* | 406 lbs* | 414 lbs* | |
8 | 4.3 | Formula, All | 329 lbs | 355 lbs | 329 lbs | 355 lbs | |
8 | 4.3 | Formula, All | 414 lbs* | 414 lbs* | |||
8 | 4.9 | All, Incl. Esprit | 298 lbs | 355 lbs | 298 lbs | 355 lbs | |
8 | 4.9 | All, Incl. Esprit | 406 lbs* | 414 lbs* | 406 lbs* | 414 lbs* | |
8 | 4.9 | Formula & Trans Am, All | 329 lbs | 355 lbs | 329 lbs | 355 lbs | |
8 | 4.9 | Formula & Trans Am, All | 414 lbs* | 414 lbs* | |||
8 | 5.0 | All | 298 lbs | 355 lbs | 298 lbs | 355 lbs | |
8 | 5.0 | All | 406 lbs* | 414 lbs* | 406 lbs* | 414 lbs* | |
8 | 5.0 | Formula & Trans Am, All | 329 lbs | 355 lbs | 329 lbs | 355 lbs | |
8 | 5.0 | Formula & Trans Am, All | 414 lbs* | 399.2 lbs* | 414 lbs* | 399.2 lbs* | |
8 | 4.9 | Formula & Trans Am, All, Turbo | 340 lbs | 340 lbs | |||
8 | 4.9 | Formula & Trans Am, All, Turbo | 414 lbs* | 399.2 lbs* | 414 lbs* | 399.2 lbs* | |
1980 | 6 | 3.8 | All, Incl. Esprit | 406 lbs* | 298 lbs | 406 lbs* | 298 lbs |
8 | 4.3 | All, Incl. Esprit | 298 lbs | 355 lbs | 298 lbs | 355 lbs | |
8 | 4.3 | All, Incl. Esprit | 406 lbs* | 414 lbs* | 406 lbs* | 414 lbs* | |
8 | 4.9 | All, Incl. Esprit | 298 lbs | 355 lbs | 298 lbs | 355 lbs | |
8 | 4.9 | All, Incl. Esprit | 406 lbs* | 414 lbs* | 406 lbs* | 414 lbs* | |
8 | 4.9 | Formula & Trans Am, All | 329 lbs | 355 lbs | 329 lbs | 355 lbs | |
8 | 4.9 | Formula & Trans Am, All | 414 lbs* | 414 lbs* | |||
8 | 4.9 | Formula & Trans Am, All, Turbo | 340 lbs | 340 lbs | |||
8 | 4.9 | Formula & Trans Am, All, Turbo | 414 lbs* | 399.2 lbs* | 414 lbs* | 399.2 lbs* | |
8 | 5.0 | All, Incl. Esprit | 298 lbs | 355 lbs | 298 lbs | 355 lbs | |
8 | 5.0 | All, Incl. Esprit | 406 lbs* | 414 lbs* | 406 lbs* | 414 lbs* | |
8 | 5.0 | Formula & Trans Am, All | 329 lbs | 355 lbs | 329 lbs | 355 lbs | |
8 | 5.0 | Formula & Trans Am, All | 414 lbs* | 399.2 lbs* | 414 lbs* | 399.2 lbs* | |
1979 | 6 | 3.8 | All, Incl. Esprit | 343 lbs | 329 lbs | 343 lbs | 329 lbs |
6 | 3.8 | All, Incl. Esprit | 406 lbs* | 406 lbs* | |||
8 | 4.9 | All, Incl. Esprit | 329 lbs | 355 lbs | 329 lbs | 355 lbs | |
8 | 4.9 | Formula & Trans Am, All | 329 lbs | 298 lbs | 329 lbs | 298 lbs | |
8 | 4.9 | Formula & Trans Am, All | 406 lbs* | 406 lbs* | |||
8 | 5.0 | All | 329 lbs | 355 lbs | 329 lbs | 355 lbs | |
8 | 5.0 | Formula, All | 343 lbs | 329 lbs | 343 lbs | 329 lbs | |
8 | 5.0 | Formula, All | 406 lbs* | 406 lbs* | |||
8 | 5.7 | All, Incl. Esprit | 329 lbs | 340 lbs | 329 lbs | 340 lbs | |
8 | 5.7 | All, Incl. Esprit | 399.2 lbs* | 399.2 lbs* | |||
8 | 5.7 | Formula, All | 343 lbs | 329 lbs | 343 lbs | 329 lbs | |
8 | 5.7 | Formula, All | 406 lbs* | 406 lbs* | |||
8 | 400 | Formula, All | 340 lbs | 340 lbs | |||
8 | 400 | Formula, All | 414 lbs* | 399.2 lbs* | 414 lbs* | 399.2 lbs* | |
8 | 403 | Formula, All | 355 lbs | 355 lbs | |||
8 | 403 | Formula, All | 406 lbs* | 414 lbs* | 406 lbs* | 414 lbs* | |
1978 | 6 | All | All | 303 lbs | 343 lbs | 303 lbs | 343 lbs |
6 | All | All | 406 lbs* | 406 lbs* | |||
8 | 305 | All, Incl. Esprit | 329 lbs | 355 lbs | 329 lbs | 355 lbs | |
8 | 305 | All, Incl. Esprit | 406 lbs* | 414 lbs* | 406 lbs* | 414 lbs* | |
8 | 305 | Formula, All | 343 lbs | 355 lbs | 343 lbs | 355 lbs | |
8 | 305 | Formula, All | 406 lbs* | 406 lbs* | |||
8 | 350 | Esprit, All | 329 lbs | 355 lbs | 329 lbs | 355 lbs | |
8 | 350 | Esprit, All | 414 lbs* | 414 lbs* | |||
8 | 350 | Formula, All | 329 lbs | 355 lbs | 329 lbs | 355 lbs | |
8 | 350 | Formula, All | 406 lbs* | 329 lbs | 406 lbs* | 329 lbs | |
8 | 403 | Formula, All | 406 lbs* | 414 lbs* | 406 lbs* | 414 lbs* | |
8 | 400 | Trans Am, All | 355 lbs | 355 lbs | |||
8 | 400 | Trans Am, All | 414 lbs* | 414 lbs* | |||
8 | 403 | Trans Am, All | 343 lbs | 355 lbs | 343 lbs | 355 lbs | |
8 | 403 | Trans Am, All | 406 lbs* | 414 lbs* | 406 lbs* | 414 lbs* | |
1977 | 6 | All | All | 343 lbs | 329 lbs | 343 lbs | 329 lbs |
6 | All | All | 406 lbs* | 414 lbs* | 406 lbs* | 414 lbs* | |
8 | 301 | Formula, All | 329 lbs | 355 lbs | 329 lbs | 355 lbs | |
8 | 301 | Formula, All | 399.2 lbs* | 399.2 lbs* | |||
8 | 305 | Formula, All | 329 lbs | 355 lbs | 329 lbs | 355 lbs | |
8 | 305 | Formula, All | 399.2 lbs* | 399.2 lbs* | |||
8 | 305 | All (Ex. Formula) | 329 lbs | 355 lbs | 329 lbs | 355 lbs | |
8 | 305 | All (Ex. Formula) | 414 lbs* | 399.2 lbs* | 414 lbs* | 399.2 lbs* | |
8 | 350 | All (Ex. Formula), L-34 | 329 lbs | 355 lbs | 329 lbs | 355 lbs | |
8 | 350 | All (Ex. Formula), L-34 | 414 lbs* | 399.2 lbs* | 414 lbs* | 399.2 lbs* | |
8 | 350 | All (Ex. Esprit & Formula), L-76 | 355 lbs | 329 lbs | 355 lbs | 329 lbs | |
8 | 350 | All (Ex. Esprit & Formula), L-76 | 399.2 lbs* | 436 lbs* | 399.2 lbs* | 436 lbs* | |
8 | 350 | Formula, All, L-34 | 329 lbs | 340 lbs | 329 lbs | 340 lbs | |
8 | 350 | Formula, All, L-34 | 414 lbs* | 399.2 lbs* | 414 lbs* | 399.2 lbs* | |
8 | 350 | Esprit, All, L-76 | 355 lbs | 352 lbs | 355 lbs | 352 lbs | |
8 | 350 | Esprit, All, L-76 | 399.2 lbs* | 436 lbs* | 399.2 lbs* | 436 lbs* | |
8 | 350 | Formula, All, L-76 | 355 lbs | 352 lbs | 355 lbs | 352 lbs | |
8 | 350 | Formula, All, L-76 | 414 lbs* | 436 lbs* | 414 lbs* | 436 lbs* | |
8 | 400 | All | 355 lbs | 352 lbs | 355 lbs | 352 lbs | |
8 | 400 | All | 414 lbs* | 436 lbs* | 414 lbs* | 436 lbs* | |
8 | 403 | All | 329 lbs | 340 lbs | 329 lbs | 340 lbs | |
8 | 403 | All | 414 lbs* | 399.2 lbs* | 414 lbs* | 399.2 lbs* | |
1971-76 | 6 | All | All | 303 lbs | 298 lbs | 303 lbs | 298 lbs |
8 | 350 | All | 294 lbs | 319 lbs | 294 lbs | 319 lbs | |
8 | 400 | All | 294 lbs | 319 lbs | 294 lbs | 319 lbs | |
8 | 455 | All | 319 lbs | 337.5 lbs | 319 lbs | 337.5 lbs | |
1970 | 6 | All | 2 Dr Hrdtp Cpe Before 2-10-70, | 337 lbs | 337 lbs | ||
4 bbl carb. | |||||||
6 | All | All After 2-10-70 | 303 lbs | 298 lbs | 303 lbs | 298 lbs | |
6 | All | Cpe Before 2-10-70, | 251 lbs | 251 lbs | |||
Single bbl carb. | |||||||
8 | 350 | All After 2-10-70 | 294 lbs | 319 lbs | 294 lbs | 319 lbs | |
8 | 350 | Conv Before 2-10-70, 2 bbl carb. | 298 lbs | 314.5 lbs | 298 lbs | 314.5 lbs | |
8 | 350 | Cpe Before 2-10-70, 2 bbl carb. | 298 lbs | 298 lbs | |||
8 | 400 | All After 2-10-70 | 294 lbs | 319 lbs | 294 lbs | 319 lbs | |
8 | 400 | Conv Before 2-10-70 | 314.5 lbs | 315 lbs | 314.5 lbs | 315 lbs | |
8 | 400 | Cpe Before 2-10-70 | 298 lbs | 314.5 lbs | 298 lbs | 314.5 lbs | |
8 | 455 | All After 2-10-70 | 319 lbs | 337.5 lbs | 319 lbs | 337.5 lbs | |
*=Heavy Duty |