Edelbrock 65012 Installation Instructions

©2005 Edelbrock Corporation

Catalog #65012 & #65013

Page 1 of 2

Rev. 1/05

DA/mc

Edelbrock Header

For 1999-2005 GM, 1500/2500 Series Pick Up,

Suburban, Tahoe, Yukon 4.8L/5.3L/6.0L V8 Auto,

2 & 4 WD, Dual Catalytic with A.I.R. and EGR

Catalog #65012 (Ceramic) & #65013 (Ti-Tech)

INSTALLATION INSTRUCTIONS

Please study these instructions carefully before installing your new Header.  If you have any questions or problems, please contact

our 

Technical Hotline at : 1-800-416-8628 from 7 am - 5pm, Monday-Friday, Pacific Standard Time or e-mail us at

edelbrock@edelbrock.com.  Please fill out and mail your warranty card.

HEADERS:  These components are designed to improve the exhaust efficiency of the GM C.P.I. (Central Port Injection) V8 engine.  This

system does not require welding for installation and retains all O.E.M. emissions equipment.  These Edelbrock headers are

street legal in all 50 states.

Suggested Tools Needed for Installation. This vehicle has metric fasteners:

❑ 

3/8" ratchet socket set with extensions and universal 13mm and 15mm swivel sockets

❑ 

Set of combination wrenches

❑ 

Jackstands, screwdrivers, pliers, crescent wrench, etc.

❑ 

Liquid penetrant, (GM #1052627) anti-seize compound (GM #5613695)

SPECIAL NOTICE: This Edelbrock part has received an Executive Order number (E.O.#) from the California Air Resources Board

(C.A.R.B.) making it legal for street use in all 50 states.  To assist you with emission equipment certification, we have included a silver

fan shroud decal to help testing personnel verify the this part is a legal replacement on the vehicle for which it is cataloged.  The

adhesive-backed decal should be affixed next to the existing emission and engine specifications decal.  Do not cover any part of your

original emission decal.

WARNING: The use of "Thermal Wrap" or any aftermarket coating process will void the warranty on your Edelbrock Headers.

Those products will cause excessive heat and moisture buildup resulting in corrosion and failure of the header.

NOTE:  High temperature spark plug wires and boots are recommended to withstand heat from Headers.

INSTALLATION INSTRUCTIONS

DISASSEMBLY

1. Disconnect negative battery cable.

2. Unbolt exhaust pipes from manifolds.

Right Side

1. Disconnect and remove spark plug wires.

2. Disconnect E.G.R. flange.

3. Disconnect A.I.R. flange.

4. Unbolt dip stick tube.

5. Unbolt and remove manifold.

6. Install flange gasket and header from top.  Install

header bolts, lock washers, and thick flat washers

supplied, ensure proper alignment and tighten bolts.

Note: Thick washers are to be used on slotted holes

of port flange.

7. Install E.G.R. flange using supplied gasket.

8. Install A.I.R. flange using supplied gasket (use factory

hardware).

Left Side

1. Disconnect and remove spark plug wires.

2. Disconnect A.I.R. flange.

3. Unbolt and remove manifold.

4. Install flange gasket and header from top.  Install

header bolts, lock washers, and thick flat washers

supplied, ensure proper alignment and tighten bolts.

Note: Thick washers are to be used on slotted holes

of port flange.

5. Re-install spark plug wires.

6. Install A.I.R. flange using supplied gasket (use factory

hardware).

Note: Due to production tolerances, it may be

necessary to bend the motor mount heat shield for

better clearance.

ASSEMBLY OF EXHAUST PIPE

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, only 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.