Information about the 1977 Pontiac Firebird Formula
What is the Bolt Pattern (PCD) for a 1977 Pontiac Firebird Formula?
5x120.65
What is the Center Bore / Hub Bore on a 1977 Pontiac Firebird Formula?
70.3mm
Does the 1977 Pontiac Firebird Formula use Lug Nuts or Lug Bolts?
Lug Nuts
What is the Thread Size on a 1977 Pontiac Firebird Formula?
7/16 UNF
What mods are other 1977 Pontiac Firebird Formula owners running?
Check out our Pontiac Firebird Build Threads to see real-world examples of how other enthusiasts are customizing their cars. From wheels and tires to performance upgrades.