EDELBROCK HEADER - CATALOG #6566
for 1988-1995 Pick-Up 5.0L, 5.7L V8 TBI without A.I.R. &
1992-1995 Suburban, Blazer, Tahoe, Jimmy, Yukon, 5.0L,
5.7L TBI without A.I.R.
INSTALLATION INSTRUCTIONS
PLEASE study these instructions carefully before installing your Headers. If you have any questions or problems, please
call our Technical Hotline at: 1-800-416-8628 from 7:00 am - 5:00 pm, 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 T.B.I. (Throttle Body 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 FOR INSTALLATION: This vehicle has metric fasteners.
K 3/8" ratchet socket set with extensions and universal 13mm and 15mm swivel sockets
K Combination set of open-end wrenches
K Jackstands, screwdrivers, pliers, crescent wrench, etc.
K Liquid penetrant, (GM #1052627) anti-seize compound (GM #5613695)
Note: Some models will require a special steering pulley, K-D #2897 or equivalent
SPECIAL NOTICE: This Edelbrock part has received an Executive Order (E.O. #) from the California Air Resources Board
(C.A.R.B.) making it legal for street use on pollution-controlled motor vehicles in all 50 states. To assist you with emissions
equipment certification, we have included a silver fan shroud decal to help testing personnel verify that this part is a legal
replacement part on the vehicle for which it is cataloged. The adhesive-backed decal should be affixed to your fan shroud
next to the existing emission and engine specification decal. Do not cover your original equipment specification decal with
the Edelbrock fan shroud decal.
WARNING: The use of "Thermal Wrap" or any aftermarket coating process will void the warranty on your
headers. Those products can cause excessive heat and moisture buildup resulting in corrosion and early
failure of the system.
NOTE: High temperature spark plug wires and boots are recommended to withstand heat from Headers.
DISASSEMBLY
1. Disconnect negative battery cable.
NOTE: Thick washers are to be used on slotted
holes of port flange.
2. Raise vehicle and disconnect 02 sensor.
3. Unbolt stock exhaust pipes from manifolds.
6. Re-install spark plug wires.
7. Re-fasten dip stick tube using spacer and bolt
supplied in kit (if needed).
Right Side
8. Replace air intake assembly.
1. Disconnect air intake assembly.
2. Disconnect and remove spark plug wires.
3. Unbolt dip stick tube.
9. With wire ties, route any hoses, wires or lines away
from headers as necessary.
10. If your vehicle is equipped with a hot air tube,
install the supplied heat stove stack with the
clamps to #1 primary tube of right side header.
4. Unbolt and remove manifold.
5. Install flange gasket and header from top. Install
header bolts, lock washers, and thick flat washers
supplied, ensure proper alignment and tighten
bolts.
©2000 Edelbrock Corporation
Rev. 12/00
Page 1 of 2
Catalog #6566
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