Here are the TTS equal length headers before installation. Notice the extra-thick 5/8"
fly-cut anti-warping flanged included.
Here's a shot of the inside of the ports themselves. Each header is first tack welded
to the flange, then individually welded from the backside to eliminate leaks.
The first order of business is to remove the stock manifolds, which is no easy task
on an F-body. Most of the work is done from the bottom. Here you can see the stock passengers side cast iron manifold
in place.
Here's the view from the drivers' side. A little more room, but not much. Notice the
AIR fittings...those are the stock pieces. The TTS headers are the only ones I know of that utilize all the stock
fittings and hoses.
Just to the left of the white oil filter, you can see the drivers' side cat. This cat
uses just under a 2¼" crossover pipe.
Here is the configuration of the stock Y-pipe. The drivers' side cat is connected directly
to the manifold (depicted in the previous picture), while the passenger side cat is beside the transmission. The
two crossover pipes "Y" together after that point. The cats and pipes are all just under 2¼"
diameter, and the Y-pipe exits as a 2½" pipe before meeting up with my 3" Borla system.
Here's a view of the stock cats and Y-pipe from the other side of the car.
The TTS supplied catalytics are much nicer than the stock units. These were bullet
shaped units of roughly 3½" diameter with their own integral heat shields.
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Here is the measurement of the I.D. of the stock catalytic converter. A measly 2¼" diameter! |
Here is the measurement of the TTS supplied catalytic converters. I.D. measurement showed 2½" diameter. |