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©2007 Edelbrock Corporation
Catalog #65022 & 65023
Page 2 of 2
Brochure #63-0364
Rev. 8/07 - DA/mc
Edelbrock Corporation, 2700 California St., Torrance, CA 90503
Tech Line: 1-800-416-8628
Office: 310-781-2222
Tech Fax: 310-972-2730
E-Mail: Edelbrock@Edelbrock.com
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 4.8L, 5.3L, & some 6.0L V8s. The 7/16 x 1 ¾ are for
the left side of 4.8L & 5.3L V8s, and on the 6.0L V8 that
do not have OE donut gaskets.
3. After the factory exhaust pipes have been tightened to
the collector flange of the header, tighten the port flange
bolts to recommended factory specifications.
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.
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.
Note: Thick washers are to be used on slotted holes
of port flange.
4. Re-install spark plug wires. Note: Due to production
tolerance, it may be necessary to bend the motor
mount heat shield for better clearance.
ASSEMBLY OF EXHAUST PIPE
Note: Some 2007 model year vehicles will have a donut
gasket on the right side OE exhaust manifold. If your vehicle
has that donut gasket, it will be re-used with your shorty
headers (see below).
This system comes with 2 exhaust crush rings. On 2001-
2006 4.8L & 5.3L V8s, one will be used on the left side
collector. On 2001-2006 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, & 6.0L V8s with donut gasket -
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.
Qty. Part # Description
1 25-9223 Manifold Left Side (#65022)
1 25-9224 Manifold Right Side (#65022)
1 25-9229 Manifold Left Side (#65023)
1 25-9230 Manifold Right Side (#65023)
4 - Hex header bolts; 8mm x 1.25 x 30mm
8 - Hex header bolts; 8mm x 1.25 x 25mm
2 - Port gaskets
3 - Hex bolts; 7/16” x 2
PARTS LIST
Catalog #65022 (Ceramic-Coated)
Catalog #65023 (Ti-Tech Coated)
Qty. Part # Description
6 - Hex bolts; 7/16” x 1-3/4”
2 - Exhaust crush rings
6 - Lockwashers; 7/16”
6 - Hex nuts; 7/16”
6 - Flat washers; 7/16”
14 - Lock washers; 5/16” (header flange)
4 -
Hardened washers (for header flange)
for slotted holes