This listing covers model years 1970, 1971, 1972, 1973, and 1974 Firebird, Firebird Trans Am, and Firebird Formula’s stock with the V8 (except 455ci Super Duty) and dual exhaust.
Photo depicts the system for 1970-72 Firebirds (Non HO or Ram Air).
- Dual exhaust system consists of LS/RS front exhaust pipes, LS/RS rear (over-axle) exhaust pipes, dual in/dual out transverse muffler, and LS/RS tailpipes. Designed to fit with the stock chrome tips which are not included with the system.
- The standard engines take a system that starts out at 2″OD on the front exhaust pipes (with 2blt flanges), then increases to 2¼”OD on the rear exhaust pipes, and reduces back to 2″OD on the tailpipes.
- The Ram Air or HO systems are 2¼”OD up to the muffler inlets and then reduces to 2″OD on the tailpipes.
- You will be asked to report with or without RA or HO manifolds along with bolt pattern needed for RA/HO systems in the check out process. There will be an additional cost of $89.00 for the Ram Air / HO systems. If you need the cast iron flanges, you may add them to your order in the check out process. If you already have the need set, you will need to mail them to us in advance (address is shown in the check out form).