5672 Manuals

See Vehicle Applications Below
Catalog #5672 & #5673
Please study these instructions carefully before installing your new Cat-Back Exhaust System. If you have any questions, please
contact our Technical Hotline at: 1-800-416-8628, 7:00 am to 5:00 pm, Monday through Friday, Pacific Standard Time or
e-mail us at [email protected].
Vehicle Applications:
Catalog #5672 - 1986-1992 Camaro / Firebird 5.0L/5.7L Engine Codes G, F, & 8
Catalog #5673 - 1983-1992 Camaro / Firebird 5.0L Engine Codes H & E
Suggested Tools for Installation:
❑ 3/8” rachet set and metric sockets
❑ 15mm wrench
❑ Jackstands and jack
❑ Liquid penetrant and rubber lubricant
Proper installation is the responsibility of the installer.  Improper installation will void warranty and may
result in poor performance and engine or vehicle damage.  
4. Install elbow #25-3224 on the left side outlet of the
1. Raise vehicle and support with the proper jackstands for
muffler and elbow #25-3225 on the right side outlet using
the weight, leaving the suspension hanging.
2-1/2” band clamps.
2. Use caution around hot exhaust systems to avoid burns.
5. Install left hanger clamp #23-4068 onto O.E. rubber
isolator using supplied bolt, nut, and washers. Larger
3. Use penetrating oil on all nuts and bolts.
fender washer goes against isolator. Snug clamp.
4. Remove all nuts, bolts, and hanger lances from the rear of
6. Install tailpipes onto elbows, snug the hanger clamp on
the catalytic converter to the tailpipes and save them.
the left side. Install a 3” band clamp on the right side
5. Remove the old system. In some cases, you will find it
elbow and snug the clamp.
easier to cut the overaxle pipe to remove it.
7. Now begin at the front of the vehicle, align the system,
paying particular attention to the overaxle area. When
you have the overaxle pipe centered between the inner
1. Install the intermediate pipe to the catalytic converter
panel and the gas tank shield, tighten up the band clamp
with the stock bolts and just snug them so you can adjust
behind converter and 3” band clamp on the overaxle
the pipe easily.
connection. Make sure that you rotate the band clamp to
2. Slip the overaxle pipe in over the axle from the rear. As
clear suspension-to-chassis movement.
you rotate it into position, slip the hanger bracket on the
8. Rotate the muffler up at the rear (about 10 degrees), align
tube onto the stock frame mounted rubber hanger. Line
the tailpipes and tighten everything up as you align.
the intermediate pipe rear outlet up with the front of the
NOTE: Due to large production tolerances on GM F-Body
overaxle pipe and slip them together. Install one of the 3”
cars, it may be necessary to trim overaxle pipe at the
band clamps on the connection and just snug it so that
muffler inlet. CAUTION: There needs to be a minimum of
you can adjust.
2” slipped into muffler for proper clamping.
3. Install muffler onto outlet of overaxle pipe along with a 3”
centering can be affected by how muffler is positioned on
band clamp.
vehicle; muffler should be parallel to the rear axle.
Trimming of the elbows at the muffler can also be used to
adjust tailpipe centering.
9. Check for leaks and correct as needed.
WARNING: Exhaust gas contains carbon monoxide, a deadly invisible gas.  Correct any leaks before driving!
©2007 Edelbrock Corporation
Catalog #5672 & #5673
Brochure #63-5672
Page 1 of 2
Rev. 3/07 - DA/mc

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