Edelbrock 6566 Manual de usuario

Rev. 12/00 Catalog #6566

Page 1of 2

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 [email protected]. 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.

❑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.

❑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.)makingitlegalforstreetuseonpollution-controlledmotorvehiclesinall50states. Toassistyouwithemissions

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.

2. Raise vehicle and disconnect 02 sensor.

3. Unbolt stock exhaust pipes from manifolds.

Right Side

1. Disconnect air intake assembly.

2. Disconnect and remove spark plug wires.

3. Unbolt dip stick tube.

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.

NOTE: Thick washers are to be used on slotted

holes of port flange.

6. Re-install spark plug wires.

7. Re-fasten dip stick tube using spacer and bolt

supplied in kit (if needed).

8. Replace air intake assembly.

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.

Rev. 12/00 Catalog #6566Page 2of 2

Left Side

1. Disconnect and remove spark plug wires.

2. Remove power steering pump support bracket.

In order to remove the OEM bracket, attach with

the two front manifold bolt. It may be necessary

to remove the power steering pump pulley. This

requires the use of a special power steering

pulley puller, such as K-D #2897.

3. Disconnect temperature sensor wire.

4. Unbolt and remove manifold from top side.

5. Install flange gasket and one 3/8"-16 x 1" bolt,

lock washer, and flat washer at rearmost bolt

hole (leave bolt loose enough to accept Header).

6. Install left side Header from top side.

7. Install all but the front two bolts and washers on

left side (do not tighten at this time).

8. Re-install rear power steering support bracket.

Do not tighten at this time.

9. Re-install accessory bracket which mounts to

the first two bolt holes on left side with 2-3/4"

ferry bolts, lock washers, and 1-1/2" spacers

supplied. Use the spacers only between the

manifold flange and the accessory bracket; use

a 3/8" lockwasher under the head of the ferry

bolt.

10. Align all parts and tighten left side bolts and nuts

at this time.

11. Re-install spark plugs and re-connect wires on

left side.

12. Re-install temperature sensor wire to

temperature sensor.

13. Re-install O2 sensor. Use anti-sieze on threads

of sensor and torque to 30 ft./lbs. Re-route O2

sensor wire from loom to O2 sensor making sure

all wires are clear of exhaust (O2 sensor

extension wire is included in kit).

ASSEMBLY OF EXHAUST PIPE

1. Usingsuppliedhardware and new donut gaskets

on both sides, re-attach the factory extension

pipes to the headers, and tighten bolts evenly to

ensure a tight seal.

FINAL INSPECTION

1. Check all lines (hydraulic, vacuum, air

conditioning and fuel) to ensure there is

adequate clearance to headers. Use wire ties as

needed.

2. Re-connect battery.

3. At this point, it is a good idea to look everything

over and make sure that nothing was missed in

assembly.

4. Start vehicle and bring up to normal operating

temperature. Check for possible leaks.

5. Turn engine off and let cool. Tighten all bolts

again.

HARDWARE SUPPLIED

Qty. Description Qty. Description

❑1#25-9151 Header left side ❑4Hardened washers (for header flange slotted holes)

❑1#25-9152 Header right side ❑1Heat stove stack

❑12 Hex header bolts ❑21 3/4” Hose clamps

❑2Port gaskets ❑63/8” Hex nuts

❑2Donut gaskets ❑25/8” O.D. spacers

❑63/8” Hex capscrews ❑13/8” O.D. spacers

❑18 3/8” Lock washers ❑1O2 Sensor plug

❑63/8” Flat washers ❑1O2 Sensor wire

❑23/8” CB bolts ❑3 Wire ties

❑11/4 Hex capscrew

Edelbrock Corporation

2700 California St.

Torrance, CA 90503

Tech Line: (800) 416-8628

Office: (310) 781-2222

E-Mail: [email protected]

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