Joined: Fri Dec 22 2006, 08:41PM
Location: Warrenton, Virginia
Posts: 1366
My 67 300 has the 440 hi po engine. It came with the HP manifolds, not sure or the part numbers, but the passenger side mani is much more "squished" and very close to the valve covers, and the driver's side is a nice "sweeping" affair. Just like shown in the pics of the HP manifolds.
I had my mechanic install TTI's 2 1/2" system with an H pipe. He said there were no fitment issues and was VERY impressed with the system. That was about a year and a half and 10K miles ago, and the system still sounds and looks good and there have been no issues with it at all. Not even any adjustments......just good to go from the start.
Joined: Thu Mar 22 2007, 08:13AM
Location: In the workshop
Posts: 1063
I certainly cant complain about the service form TTi, personally I find the contact that I have had with a couple of their employees excellent. Quality though, I am not so sure about. Sure, the pipes are well made, and after two years still look like new. I do have a couple of negative comments though. For some reason, my tailpipes were to long, I had to shorten them to fit. There is a really bad resonance at about 30mph. Bd enough to make one passenger throw up...Finally, I find them a little inflexible. for some reason, they only have head pipes to fit the right hand HP that was fitted to C bodies. Unless of course one of the two left hand casting numbers that they make head pipes for is identical to the one needed...
TTI makes the left side pipe that fits manifold #2863409 --They made the pipes for my car and that is the manifold I have. What type of car do you have? TTI makes the pipes long enough to fit the 123" wheelbase Chryslers, and so if you have the shorter wheelbase Fury the pipes may be too long. If you are having a lot of resonance at 30mph you may have cut the pipes off too much--try a longer tailpipe extension that sticks out beyond the bottom of the car to see if that fixes the problem.
I used to rattle the windows at my brothers house when i drove up and i don't want to try and count the car alarms that i set off before i extended and angled my pipes different!
Joined: Fri Dec 22 2006, 08:41PM
Location: Warrenton, Virginia
Posts: 1366
There WAS a noticable resonance in the 35 to 45 mph range for the first 1,000 miles or so. It was quite noticable and I can understand how some may find it objectionable. But once reaching 55 mph, everything quieted down nicely!!
It does NOT resonate anymore....I guess it takes a while to "carbon-up" the pipes and mufflers. After that it's barely noticeable at all.