The tti instructions called for milling down the head. If you scroll up a bit you can see that I accomplished that with a hand saw. Probably not the best way to do it, but it worked...Never seen one of those bolts with that skinny of a head. I wonder if it's been milled down for clearance?
Hi Dibbons, I've been following your build and noticed that you are apparently the only one on FABO who has installed the tti exhaust on a '65 Barracuda. Thanks for your tips - I will probably still have a few questions. I checked and per tti instructions/ specs the engine should be in the right position. I'll shim it if I run into further issues. One question I have right away: How much did you have to shorten the H-pipe? The same exhaust is supposed to also fit a Dart, which has a 2" longer wheelbase. When I mocked it up, it looked like it needed to be shortened more than that though.On my '65 when installing the TTI exhaust, I did not agree with starting at the rear-that just won't work at all if you ask me. It was near impossible fitting in the passenger side head pipe, but I finally found a way to do it (and now I forget what my strategy was, unfortunately). Then to prevent the same header pipe from rubbing on the Torqueflite transmission (near the oil pan) I did have to shim the passenger side motor mount up a little bit with a small metal plate (I think it was only 1/8" or so-not any more than 1/4" for sure). Holes behind the rear seat do have to be drilled for the large muffler brackets. Then I had to find a longer rubber brake line hose (rear) to prevent the driver's side tail pipe from rubbing on it (but that might have been an interference problem only because a previous owner had swapped in an 8 3/4" differential).
and 90 degree oil filter adaptor
A few years later I tore the entire exhaust system loose when the clamp on the H-pipe got hung up on a huge speed bump (the clamp was installed with the ends of the "u" and the nuts pointing straight down, which limited clearance just enough to cause a problem. Photo #1 shows the passenger side motor mount shim I used. The other photos show the tight clearances with the passenger side torsion bar, Torqueflite oil pan, (probably before the shim was placed), the oil filter adaptor bolt, and the transmission crossmember clearance on the passenger side.
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Unfortunately, the first time the TTI system was installed was by a local shop, if they did any cutting I am not aware of it. When I shimmed the passenger side motor mount, I used a carpenter's level in order to get the motor just right (photo #1). The shop never used a shim and they set it up so the whole system hung too low. I re-installed everything TTI and improved the fit during the recent restoration. Here is a photo of the "H" pipe from my build thread if that helps (photo #2).One question I have right away: How much did you have to shorten the H-pipe?
My transmission shift cables got melted by the driver's side TTI head pipe. The factory clamp that retains the cable is too close and the cable will get burned. I ended up clamping the cables onto the floorboard after having wrapped them in high-temp silicone sheathing. Even now the clearance is minimal and I will have to keep an eye on things. Not really necessary, but I fabricated driver's side exhaust manifold braces (last photo).
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Here's a couple pics of the same tab on my 66. It curves under and serves as the mount for the radiator.