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©2008 Edelbrock Corporation
Brochure #63-65172
Catalog #65172, #65173
Rev. 3/08 - AJ/mc
Page 1
®
UNIVERSAL FIT STREET ROD HEADERS
For LS Series V8s in Early Street Rods
Catalog #65172 & 65173
INSTALLATION INSTRUCTIONS
Please study these instructions carefully before installing your new Edelbrock Universal Fit LS1 Headers. If you have any questions,
please contact our Technical Hotline at: 1-800-416-8628 , 7am - 5pm, Monday-Friday, Pacific Standard Time or e-mail us at
Edelbrock@Edelbrock.com.
DESCRIPTION: These headers are designed to improve the exhaust efficiency of the LS series engine and have a universal design
to accomodate a wide variety of street rod, musclecar and custom applications.
Suggested Tools for Installation:
❑ SAE and metric sockets, ratchets, and wrenches
❑ Floor jack and load rated jackstands
KIT CONTENTS:
#65172 #65173
IMPORTANT NOTE:
Proper installation is the responsibility of the
installer. Improper installation will void
warranty and may result in poor performance
and engine or vehicle damage.
Part Number Quantity Description
25-9819 1 Left Side Header
25-9820 1 Right Side Header
25-9677 2 Extension Pipes
22-6517 1 Installation Kit
Part Number Quantity Description
25-9817 1 Left Side Header
25-9818 1 Right Side Header
25-9677 2 Extension Pipes
22-6517 1 Installation Kit
Make Sure There
is Equal Spacing
All The Way Around
Donut Gasket
FIGURE 1
1. Raise and support vehicle off the ground.
2. Remove any existing exhaust manifold and or pipes that
will interfere with the installation of the headers.
3. Install the headers on to the engine using the supplied
gaskets, bolts, and washers. Install all the header bolts in
the header before tightening them. Removal of the starter
will make header installation easier in some applications.
4. Install supplied donut on to the collector outlet of the
header.
5. Install collector extension pipes on to headers using
supplied hardware (
See Figure 1
).
INSTALLATION PROCEDURE
WARNING!!!
Exhaust gas contains carbon monoxide, a deadly
invisible gas. Correct any leaks before driving!
Edelbrock Corporation, 2700 California St., Torrance, CA 90503
Tech Line: (800) 416-8628 Office: (310) 781-2222
E-Mail: Edelbrock@Edelbrock.com