Edelbrock 66662 Installation Instructions

Catalog #s 66662, 66672, 66663, 66673, 68012, & 68013

©2005 Edelbrock Corporation

Page 1 of 3

Brochure #63-0447

Rev. 9/05 - DA/mc

TUBULAR EXHAUST SYSTEM

Catalog #s 66662, 66663, 66672, 66673, 68012, 68013

Vehicle Applications - See Below

INSTALLATION INSTRUCTION

Please study these instructions carefully before installing your new  Tubular Exhaust System (TES).  If you have any

questions, 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.

APPLICATIONS:  

#66662, #66663:  

1992-1993 Blazer 5.7L TBI

1988-1995 GM Pick-Up 5.0L & 5.7L TBI

1992-1995 Suburban 5.0L & 5.7L TBI

#66672, #66673:

1988-1995 GM Pick-Up 5.0L & 5.7L TBI

NOTE:  All of the following vehicle applications are for 2 & 4 WD, Automatic and Standard

Transmission without A.I.R., Clamp-On Catalytic Converter:

#68012, #68013:

For lowered trucks - fits same application as #66662, #66663

TUBULAR EXHAUST SYSTEM: These components are designed as a system to improve the exhaust efficiency of the GM

T.B.I. (Throttle Body Injection) V8 engine.  A performance gain can be expected by the installation of the system.  This

system requires no welding for installation and retains all O.E. M. emissions equipment. 

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

❑

3/8” rachet socket set with extensions and universal 13mm and 15mm swivel sockets

❑ 

Combination set of open-end wrenches

❑ 

Jackstands, screwdrivers, pliers, crescent wrench, etc.

❑

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

NOTE: Some models will require special power steering pulley puller, K-D 2897 or equivalent.

SPECIAL NOTICE: This Edelbrock Tubular Exhaust System 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 that 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

Tubular Exhaust Systems.  Those products can cause excessive heat and moisture buildup resulting in corrosion and

failure of the system.  

INSTALLATION INSTRUCTIONS

DISASSEMBLY

1. Disconnect negative battery cable from battery.

2. Raise vehicle and support with jackstands.

3. Use penetrating oil on all nuts and bolts to be

removed.  This will prevent the possibility of broken

or stipped nuts and bolts.

4. Making sure the converter is cool, remove the

exhaust crossover pipe.

5. Lower vehicle to the ground.

DISASSEMBLY - LEFT SIDE

6. Remove air cleaner system (note position of line and

hose connections).

7. Disconnect A.I.R. (Air Injection Reactor) tube from

exhaust manifold (#66672, & 66673 only).

8. Remove airconditioner compressor rear support

bracket (ir airconditioning equipped).

9. Remove power steering pump support bracket (if

power steering is applicable).  In order to remove the