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I run the TTI 2" headers and the full 3" exh system out to the rear bumber. I went with the X-pipe and it fit great and was simple to install. Ron

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x2, .

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has anyone bought one of the TTI exhaust systems?i am looking at buying one for my 72 roadrunner with headers.notice the kit listed is for 71-74 b-bodys,all engines and tranny combos.how is the fit and ease of putting it on,any mods had to be done?also looking to cut it for the machine gun tips i have.

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I’m running 3” X-pipe TTI system with tips on my 72’ RR/GTX, exhaust system fits well but as mentioned does not use some of the hangers originally used. Besides the need to add a floor mounted muffler hanger brackets as needed, the tail pipes have hanger tabs using a factory style tail pipe hanger forward of where the factory tips/hangers would locate. TTI’s repo tips don’t have hanger tabs and are designed to clamp to their “cut off” turn down tail pipes. The tips exit in the same position as the originals and will require a cut out or modified rear valance to fit perfectly. Other repo tips matching whatever pipe size tail pipe should work as well, may have to choose which hanger configuration. I’m planning to add some resonators to mine after recently going back to manifolds and will be reworking my tips and hangers to accommodate them.

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so, let me get this right.. you cant use TTI exhaust with the original hangers at all? Id really like to utilize my original hangers if I can..

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so, let me get this right.. you cant use TTI exhaust with the original hangers at all? Id really like to utilize my original hangers if I can..

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I’m not sure how you read that into any of my posts. The OP’s question was about a 72’ b-body specifically, I have only seen/installed the TTI 3” kit for that application, and it comes with heaver duty hanging hardware than any factory stuff I’ve seen. Originally, the 72’ b-body didn’t have a muffler hanger on the passenger side as the previous years had. The weight of the passenger side factory muffler, single or dual, was carried at hanger clamped to the tail pipe above the axle. TTI kit uses a HD hanger at the rear of both mufflers. Driver’s side factory dual exhaust had an additional hanger bracket bolted to the floor. The TTI kit comes with two of these brackets, again, heaver construction than original. The same tail pipes are used with and without their tips. Again a HD hanger similar to the factory design is used to support the tail pipe, mounted in the holes forward of where a tip hanger would be located, same location for a factory non-tip tail pipe hanger.


Here's the factory muffler hanger bracket for dual exhaust driver's side;


And a TTI bracket added to support the passenger side muffler;

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so, let me get this right.. you cant use TTI exhaust with the original hangers at all? Id really like to utilize my original hangers if I can..

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I’m not sure how you read that into any of my posts. The OP’s question was about a 72’ b-body specifically, I have only seen/installed the TTI 3” kit for that application, and it comes with heaver duty hanging hardware than any factory stuff I’ve seen. Originally, the 72’ b-body didn’t have a muffler hanger on the passenger side as the previous years had. The weight of the passenger side factory muffler, single or dual, was carried at hanger clamped to the tail pipe above the axle. TTI kit uses a HD hanger at the rear of both mufflers. Driver’s side factory dual exhaust had an additional hanger bracket bolted to the floor. The TTI kit comes with two of these brackets, again, heaver construction than original. The same tail pipes are used with and without their tips. Again a HD hanger similar to the factory design is used to support the tail pipe, mounted in the holes forward of where a tip hanger would be located, same location for a factory non-tip tail pipe hanger.


Here's the factory muffler hanger bracket for dual exhaust driver's side;


And a TTI bracket added to support the passenger side muffler;

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Hey Jim,
Are you running tips or turn downs? Are those the 2” primary headers? Have you run into any ground clearance problems at the collectors or the adapter pipes? It does appear you may be running a little higher ride height than I am currently.

"Great stuff, very well made and excellent customer service."

Couldn't agree more.

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