Pypes Performance Exhaust SGG22 - Manual

SGG20 / SGG22
409 Stainless steel cross-member back exhaust system
for 1978-1988 GM G-bodies El Camino’s
SGG20: 2-½” System w/ x-pipe, side-exit tailpipes *
SGG22: 2-½” System w/ x-pipe, rear-exit tailpipes *
* Double hump cross-member required
Thanks again for purchasing your new 409 stainless steel Pypes Perfor-
mance Exhaust header/cross-member back system. Please be sure to
confirm all the components in the kit were received in your shipment before
beginning installation. These kits will include (1) X-pipe kit, (2) x-pipe angled
extensions (2) Mufflers (if purchased), (2) tailpipes, (2) collector exten-
sions, (2) muffler hangers, (2) tailpipe hangers, (8) clamps, and (1) bonus
pack. If you purchased a kit including 409 stainless mufflers you will see
the following notation after the system number: (S) Street Pro, (R) Race
Pro, and (V) Violator. If you find any component missing, please contact our
office at 800-421-3890 for replacement. Installation of this kit will require
some simple hand tools; box wrenches, deep sockets w/ ratchet, exten-
sion, a saws-all and some penetrating lubricant. For a quicker and tighter
installation, air tools are recommended. Fully welding the system is always
recommended when possible. Technical assistance is available both online
at www.pypesexhaust.com or 800-421-3890. Also our online Installation
Gallery is a great assistant during your installation,
www.pypesexhaust.com/pictures.html .
Pypes Performance Exhaust
2705 Clemens Road Bldg 105A Hatfield, PA 19440
800-421-3890 (voice) 267-638-3507 (fax)
www.pypesexhaust.com
(A) X-pipe Front Legs
(B) X-pipe Assembly
(C) X-pipe Extensions
(D) Mufflers
(E) Tailpipes
(B)
(C)
(D)
1. Begin by placing the vehicle on a lift or four jack stands at maximum height
to aid in an easier installation. To help ease the installation, pre-fit all the compo-
nents into a complete system on your garage floor, using the diagram provided.
2. Remove the existing exhaust system from the headers, exhaust manifolds
back or the catalytic converter. You can also remove any hanger mounted to the
frame as your new kit includes new hangers.
3. Now, install your new components. You will be starting from the back of
the car and working your way forward. Begin by installing the new tailpipes. Your
new tailpipes will not require trimming unless installing tips.
• Side exit style: Temporarily hang the tailpipes over the rear axle. These
tailpipes utilize factory mounting holes located on the frame rails near the rear
tires. Place the rubber tailpipe grommets onto the “L” shaped hangers, slide the
bolt through the hole and thread them into the frame rails. If factory holes are not
present, new ones will need to be drilled. Slide the mufflers onto the tailpipes plac-
ing a support under them. You will be clamping a hanger to the back of the muffler
neck and attaching it to the under body of the car. In some applications, your factory
hangers may be used.
4. You have just slid the mufflers on to the tailpipes. The inlet should be clos-
est to the drive shaft and the outlet should be towards the rockers of the car. The
clamp attached to the hanger at the backside of the muffler will be the only connec-
tion clamp used.
5. Next, install the x-pipe or converter back Y-pipe. This is where trimming of
the front legs and rear legs may be required for the optimum fit. Install the rear leg
extensions into the mufflers first. Your center “X” should land approx 8-12 inches
behind the tail shaft of your transmission and centered under the driveshaft. Also,
the center plate in the “X” has an arrow stamp which must point forward. Slide the
fixed rear legs into the read leg extensions. Length trimming will be necessary.
The approx amount of material to be trimmed off will be 6-9 inches depending on
transmission, cross member and header location. Next, slide the front legs into
the x-pipe. They should end somewhere close to the humps in your transmission
cross-member. These may need to be trimmed to fit the width of your headers or
optional down-pipes. Be extra careful when measuring and cutting. A helpful tip:
Line up the front legs under the center “X” to mark your cut lines making sure to line
them up with you headers or down pipes. Finish the system by connecting the front
legs of the x-pipe to the headers (collector reducers) utilizing the two 1ft connection
pipes. Trimming the length may be required. If down pipes are used, make sure
they end close to the rear side of the transmission cross member. If they are too
long they must be trimmed. Some header applications require custom collectors
due to the header not ending square and parallel in the car. For proper system
fit, your collectors must run parallel with your rocker panels.
6. Finish the system by making all your final adjustments to position the
mufflers and piping. Now tighten all the clamps or for the best fit weld all
the slip joints. 409 stainless steel can be welded with your standard mig
welder.
Now it’s time to fire up that muscle car and enjoy your
new Pypes Performance Exhaust.
(A) (A)
(C)
(D)
(E) (E)