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
. 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
