1967 GTO Automatic Transmission Exhaust System

The 1967 GTO with automatic transmission could have been equipped with two different exhaust systems depending on the performance. Std. Duty cars came standard with 2″ head pipes and 2 1/4″ tail pipes, HO cars had 2 1/4″ head pipes with a flat, and 2 1/4″ tail pipes. All automatic cars used a resonator that slid on the end of the tail pipe. The resonator was interesting in concept. A portion of the gases went directly through the resonator and exited out the back of the car through a double angle cut tips while the remaining portion bounced around for a while before they found there way out.. This mush have given the GTO some uniques sound Pontiac was looking for. Stainless steel tips were on option on the car and when used pointed down at the back of the bumper fairly significantly. The mufflers were unequal length on these cars. Our reproduction exhaust systems come with the correct head pipes with correct flanges on std. duty cars and available flanges on HO cars, correct tail pipes with correct flanges, front hangers, tail hangers, clamps installation instructions, diagrams sealant are standard as well. Ask about our concourse show package for the customer who wants their system to be a little more real than real and have all the exact correct components.

Ask about our turbo mufflers for those customers who want a little more Roar in their Tiger!

1967 GTO Std. Duty Automatic Exhaust System

1967 GTO HO Automatic Exhaust System

1966 - 1967 GTO Muffler Hangers

These hangers are correct for 1966 - 1967 GTO's the hangers originally had a small bulge to correspond to the bulge in the clamps that Pontiac used during the day. These clamps and hangers are an exclusive Gardner Exhaust reproduction and will put your GTO over the top in exhaust restoration correctness. The hanger pictured here comes zinc plated, and hand built with corded rubbers and button head rivets to simulate the original and are availble with any of our 1966 - 1967 GTO exhaust systems.

1966 - 1972 GTO Round Bottom Clamp

These clamps are absolutely correct for any 1966 to 1972 GTO restoration. There has never been a high quality reproduction of this clamp or the hanger above that corresponds to it. These clamps are a Gardner Exhaust exclusive reproduction they come zinc plated and are available with any of our Pontiac exhaust systems

1964 - 1969 GM A - Body Tail Pipe Hangers:

These hangers are a reproduction of the orginal hangers used on a good portion of the GM A - Body Muscle Cars. These are our handbuilt hangers with corded rubbers and our reproduction button head rivets and are for those who have to have it just the way the car came from the factory. The hangers pictured here are a Gardner Exhaust Exclusive Reproduction. A similar hanger comes standard with our kits along with the correct screws pictured here.

1966 GTO and 1967 GTO Automatic Tips

These tips were an option on any 1966 GTO and 1967 GTO Automatic Exhaust Systems. They come stainless steel. We believe the original may have been chrome plated with stainless underneath.They are not our reproduction but we have compared them with our original tips and are pleased to offer them with our 1966 and 1967 GTO exhaust systems.

1964 - 1972 GM A - Body Retainer

These retainers were used on the GM A - Body Muscle cars on the muffler hangers. The attaching screw first went through this reatiner and then through the rubber. The reatainer functioned as a washer to protect the rubber on the hanger. Our retainers have been reproduced from the orginal in the picture and come zinc plated. They are a Gardner EXhaust exclusive reproduction and come standard with our concours show pkg. or can be optioned for with one of our entire systems.