Help with installing Flowmaster Am. Thndr exhaust

[19stang66]

Is this what yours looked like after installing it? Nothing is tight, all clamps are loose and it isnt attached to headers yet.

It just seems like the mufflers make an akward angle towards the driveshaft. Will this all straighten out to fit nice once the h-pipe gets attached to the headers?

I called a muffler center in my city and he said that they nor anyone else in town does mandrel pipe, but he would be able to make something up to fit the h-pipe to the collectors. The city isnt small, like 90,000 people. It seems weird that a city of this size wouldnt have a muffler center that works with mandrel pipe.

Also, i will be replacing my new prothane motor mounts with stock ones once they get here because my headers arent fitting right with the prothane mounts. Should I have them finish installing the system before the stock mounts are installed or is it alright to have them install the exhaust now and then install the mounts after? SORRY FOR THE LOOONG POST.

 

[red65]

The mufflers do make a bit of an angle with the driveshaft, but that's what the H-pipe is bent for. The mufflers should sit flat when all is said and done, but from a top view, they angle in toward the front. I found the fit on my '65 to be pretty good, with the h-pipe tucked pretty nicely into the tunnel, except for the very front end. There, the h-pipe which made a couple of wierd jogs that neither I nor the muffler shop understood. They ended up cutting off the front 12-18" and welding in their own head pipes to connect to my collectors (I've got shorty JBAs). 'course they made a hack-job of it - make sure you're standing there when they do it, and that someone who gives a rat's butt is working on it. There's no IQ test to work at a muffler shop.