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This listing covers model years 1967, 1968, 1969, 1970, 1971, 1972, 1973, and 1974 Firebird, Firebird Trans Am, and Firebird Formula's with the stock V8. For model years 1967-69 this listing eliminates both the stock resonators and transverse muffler, for model years 1970-74 this listing eliminates the transverse mufflers and puts mufflers forward of the rear axle. This is not a stock set up and your OEM hangers will not work on this alternative design. For the OE correct system refer to listing 453239. Photos depicts a system for a 1967-68 Pontiac Firebird Alternative Design. Exhaust pipes will vary depending on engine. Report with or without HO or RA in the order form below. If you have a RA or HO set-up and need the cast iron flanges, you may add them to the cart. -
This listing covers model years 1967, 1968, and 1969 Firebird's with the stock V8 and stock dual exhaust. Photos depicts the exhaust system for MY's 1967-68 Firebirds stock V8 (except 400HO & Ram Air).- Dual exhaust system consists of the LS/RS exhaust pipes, LS/RS resonators, LS/RS connector pipes, dual in/dual out transverse muffler, and LS/RS tailpipes.
- The system for the Non HO or RA engines starts out at 2"OD, increases to 2¼"OD at the connector pipes, then decreases back to 2"OD.
- The system exhaust pipes for HO & RA engines are 2¼"OD flared to 2½"OD at the manifolds, connector pipes are 2¼"OD and then reduces to 2"OD on the tailpipes.
- Regarding HO & RA setups: We are no longer able of offer the stock cast iron flanges. The exhaust pipes will come with universal flanges. If you have the stock cast iron flanges, keep them and reuse them.
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This listing covers 1982, 1983, and 1984 Trans Am's with the stock 305H.- Single to dual cat-back system consists of the rear Y pipe, H pipe (sits between), single in/single out LS/RS transverse mufflers, and LS/RS tailpipes. Y pipe and H pipe may be NORS.
- Split chrome tips were not an option on these vehicles.
- If front Y pipe and/or converter are needed, please contact us for pricing and availability.
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