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74-77Camaro.com



Rate Chart - Firebird

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