Edelbrock 66332 Installation Instructions
Catalog #66332, #66333
©2006 Edelbrock Corporation
Page 1 of 2
Brochure #63-66332
Rev. 8/06 - DA/mc
TUBULAR EXHAUST SYSTEM
For 1999-2002 GM, 2500 Series Pick-Up & Suburban,
6.0L V8 Auto, 2 & 4 WD with Dual Catalytic Converters
Catalog #66332, #66333
INSTALLATION INSTRUCTIONS
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.
TUBULAR EXHAUST SYSTEM: These components are designed to improve the exhaust efficiency of the GM C.P.I. (Central Port
Injection) V8 engine. A performance gain can be expected by the installation of the system. This system does require welding
for installation and retains all O.E.M. emissions equipment.
Suggested Tools Needed for Installation: This vehicle has metric fasteners.
❑ Mig welder (recommended) or gas welder—Professional welding is highly recommended
❑ 3/8” ratchet socket set with extensions and universal 13mm and 15mm swivel sockets
❑ Combination set of open-end wrenches
❑ Jackstands, screwdrivers, pliers, crescent wrench, etc.
❑ Hacksaw or Sawz-all
❑ Liquid penetrant, (GM #1052627) anti-seize compound (GM #5613695)
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 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 Tubular
Exhaust Systems. Those products can cause excessive heat and moisture buildup resulting in corrosion and failure of the system.
NOTE: High temperature spark plug wires and boots are recommended to withstand heat from T.E.S.
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.
KIT CONTENTS
Catalog #66332 (Ceramic-Coated), #66333 (Ti-Tech Coated)
Qty.
Description
❑ 1
Header left side #25-9464 (#66332)
❑ 1
Header right side #25-9463 (#66332)
❑ 1
Header left side #25-9146 (#66333)
❑ 1
Header right side #25-9147 (#66333)
❑ 1
Extension pipe left #25-9660
❑ 1
Extension pipe right #25-9661
❑ 12
Hex bolts; 8mm x 1.25
❑ 12
Hardened washers; 5/16”
Qty.
Description
❑ 14
Lock washers; 5/16”
❑ 2
Hex bolts (EGR); 5/16” - 18 x 3/4”
❑ 4
Hex bolts; 3/8” - 16 x 2-1/2”
❑ 4
Lock washers; 3/8”
❑ 4
Flat washers; 3/8”
❑ 2
Donut gaskets; 3”
❑ 2
Port flange gaskets
❑ 1
EGR gasket