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4 Cyl, 151 cid (2.5L, VIN 2, 8th digit)
6 Cyl, 173 cid (2.8L)
- VIN 1 (8th digit)
- VIN L (8th digit)
8 Cyl, 305 cid (5.0L)
- 4-barrel carburetor
  - VIN 7 (8th digit)
  - VIN H (8th digit)
- EFI (VIN S, 8th digit)

Engine Assembly for 1983 Pontiac Firebird

Fits: 8 Cyl, 305 cid 5.0L EFI VIN S, 8th digit (change)

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