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ASSEMBLY OF EXHAUST PIPE FINAL INSPECTION
1. Check all lines (hydraulic, vacuum, air
conditioning and fuel) to ensure there is
adequate clearance to headers.
2. Re-connect battery.
3. At this point, it is a good idea to look
everything over and make sure that nothing
was missed in assembly.
Note: The stock donut on 4.8L & 5.3L gasket on
right exhaust manifold will be re-used with
headers.
This system comes with 2 exhaust crush
rings. On 4.8L & 5.3L V8s, one will be
used on the left side collector. 6.0L
vehicles will use one on the left side and
one on the right side to replace factory-
installed crush rings.
1. On 4.8L & 5.3L V8s - Remove the donut gasket
from right side exhaust manifold. Using a pair of
pliers, remove the retaining ring from the donut
gasket and place the donut gasket in flare of
factory exhaust pipe.
2. Using supplied hardware, re-attach the factory
exhaust pipes to the headers and tighten bolts
evenly to ensure a tight seal. (Note: The 7/16 x 2
bolts are to be used on the right side of 4.8L &
5.3L V8s and the 7/16 x 1 ¾ are for the left side of
4.8L & 5.3L V8s, or both sides on 6.0L V8).
4. Start vehicle and bring up to normal operating
temperature. Check for possible leaks.
5. Turn engine off and let cool. Tighten all bolts
again.
HARDWARE SUPPLIED
Qty. Description Qty. Description
1 #25-9174 Header left side 6 7/16” Lock washers
1 #25-9156 Header right side 6 7/16” Hex Nuts
4 Hex header bolts; 8mm x 1.25 x 30mm 6 7/16” Flat washers
8 Hex header bolts; 8mm x 1.25 x 25mm 14 5/16” Lock washers (header flange)
2
3
Port gaskets
7/16” x 2 Hex bolts
4 Hardened washers (for header flange) slotted
holes
6 7/16” x 1 ¾ Hex bolts
2 Exhaust crush rings
PLEASE complete and mail your warranty card. Be sure to write the model number of this product in the “Part
#______” space. Thank you.
Edelbrock Corporation
2700 California Street
Torrance, California 90503
Toll-Free Tech Line (800) 416-8628
Tech E-mail: edelbrock@edelbrock.com
2002 Edelbrock Corporation Rev. 8/02
C:\WINWORD\Installation Instruction - Temp Folder\6502 - Shorty Headers.Doc