Edelbrock 68272 Manual de usuario

Catalog #68272, #68273

Page 1 of 3 Brochure #63-68272

Rev. 8/06 - DA/mc

TUBULAR EXHAUST SYSTEM

Vehicle Applications: See Below

Catalog #68272, #68273

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 [email protected].

APPLICATIONS:

• For 1979-1980 Chev./GMC Pick-Up Trucks 1500 Series , 350 C.I.D. V8, 2 WD, Auto Transmission, with A.I.R.

•For 1981-1987 Chev./GMC Pick-Up Trucks & Suburban, 1500/2500 Series, 305 & 350 C.I.D. V8, 2 WD, Auto &

Standard Transmission with A.I.R.

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

305/350 c.i.d. V8 engines. A performance gain can be expected by the installation of the system. This system retains all

O.E.M. emissions equipment. This system requires welding an extension (supplied) to the heat riser valve actuating rod

(1979-80 only). If welding equipment is not available, use the services of a professional for installation of the extension.

Suggested Tools Needed 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)

❑Gas welding equipment

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.

Catalog #68272, #68273

Page 2 of 3 Brochure #63-68272

Rev. 8/06 - DA/mc

• DISASSEMBLY

1. Disconnect battery negative 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 stripped nuts and bolts.

4. Making sure the converter is cool, remove the

exhaust crossover pipe.

5. Remove Heat Riser valve from right side manifold.

Put aside for re-use.

6. Remove exhaust pipes from manifold and catalytic

converter.

• LEFT SIDE

7. Remove air cleaner system (note position of line

and hose connections).

8. Disconnect A.I.R. (air injection reactor) tube from

exhaust manifold .

9. Remove air conditioner compressor rear support

bracket (if air conditioning equipped).

10. Remove power steering pump support bracket (if

power steering is applicable).

11. Disconnect spark plug wires and remove spark

plugs.

12. Disconnect temperature sensor wire.

13. Remove bolts and exhaust manifold from top side.

• RIGHT SIDE

14. Disconnect A.I.R. injection tube from exhaust

manifold.

15. Disconnect spark plug wires and remove spark

plugs.

16. Remove bolts and exhaust manifold from top side.

17. Clean exhaust flange surfaces on cylinder heads at

this time.

• ASSEMBLY - LEFT SIDE

1. Install O2 sensor plug in left side manifold (1979-80

only).

2. Install T.E.S. 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 T.E.S.).

3. Install left side T.E.S. manifold from top side.

4. Install all but the front two bolts and washers on left

side (do not tighten at this time).

5. Re-install rear power steering support bracket. Do

not tighten at this time.

INSTALLATION INSTRUCTIONS

6. Install rear A/C support bracket with bolts, lock

washers, and spacers supplied. Spacer required for

long compressor only.

7. Align all parts and tighten left side bolts and nuts at

this time.

8. Re-install spark plugs and re-connect wires on left

side.

9. Re-install temperature sensor wire to temperature

sensor.

• RIGHT SIDE PREPARATION (1979-80 applications

only)

1. Prepare right side manifold prior to installation as

shown in

Fig. 1 and Fig. 2.

2. Cut the heat riser valve actuating rod with a hack

saw about 5” from the bottom of the vacuum unit.

3. Install vacuum unit and bracket to T.E.S. manifold

on bench. Use nuts, bolts and spacers supplied in

kit

(See Fig. 1).

4. Use extension supplied to connect the two halves of

the actuating rod as shown in

Fig. 2

Fig. 1

Assemble heat riser valve vacuum pod and bracket to

manifold (1979 - 1980 Only)

Fig. 2

Cut and extend actuating rod as shown (1979-1980 Only)

Catalog #68272, #68273

Page 3 of 3 Brochure #63-68272

Rev. 8/06 - DA/mc

Edelbrock Corporation, 2700 California St., Torrance, CA 90503

Tech Line: 1-800-416-8628

E-Mail: [email protected]

Fig. 3

Cut heat riser tube as shown for use with

extended hose (1981 & Later only)

5. Bend rod/extension as necessary so that rod comes

straight out of vacuum pod with no binding.

6. Weld extension to actuating rod.

7. Disassemble components and continue installation.

• ASSEMBLY - RIGHT SIDE

1. Install T.E.S. 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 T.E.S.).

2. Install right side T.E.S. manifold from top side.

3. Install vacuum pod and bracket using bolts and

1-1/8”spacers supplied (1979-80 only). For 1981

and later, cut heat riser metal tube as shown in

Fig.

Install remaining bolts and lock washers.

4. Align all parts and tighten all right side bolts at this

time.

5. Re-install spark plugs and re-connect wires.

6. Remove A.I.R. check valves from original manifolds

and re-install them on T.E.S. With 3/4” hose

supplied in kit, re-connect all A.I.R. injection hoses

at this time (1979-80). For 1981-1986

applications, remove OEM formed hose from left

side and use on the right side TES manifold; use

5/8” hose supplied on left side TES manifold.

7. Raise vehicle and support with jackstands.

• CROSSOVER PIPE ASSEMBLY

1. Install heat riser valve and extended actuating rod

(1979-80 only). On 1981-1986, connect heat riser

vacuum pod using 1/4" vacuum hose supplied.

2. Carefully align and tap adapter tube into converter

using a piece of wood or a mallet to protect the end

of the adapter. NOTE: Be sure adapter goes all the

way in, approximately 2-1/2”.

3. Install crossover pipe assembly on vehicle using

four 3/8” x 2” bolts with lock washers and donut

gaskets supplied.

4. Install U-clamps and tighten all nuts and bolts.

KIT CONTENTS

Catalog #68272 (Ceramic-Coated), #68273 (Ti-Tech Coated)

Qty. Description

❑1Header left side #25-9443 (#68272)

❑1Header right side #25-9442 (#68272)

❑1Header left side #25-9061 (#68273)

❑1Header right side #25-9062 (#68273)

❑1Extension Y-pipe #25-9565

❑1Extension crossover pipe #25-9567

❑1Extension adapter pipe #25-9566

❑2Chevy V8 port gaskets

❑1Donut gasket

❑1Heat riser gasket

❑1O2 Sensor plug

❑1U-clamp; 3”

❑1U-clamp; 2-1/4”

❑4Flat washers; 3/8”

❑9Hex header bolts; 3/8” x 1”

Qty. Description

❑2Hex header bolts; 3/8” x 2”

❑1Hose connector; 3/4”

❑1Spacer tube; 5/8” O.D. x 3/4” long

❑3Spacer tubes; 5/8” O.D. x 1-1/8” long

❑3Hex nuts; 3/8” - 16

❑2Hex bolts; 3/8” x 2”

❑212-point head bolts

❑1Vacuum hose; 1/4” x 15”

❑1Hose (A.IR.); 5/8” x 16”

❑1Hose (A.I.R.); 3/4” x 13”

❑3Hex bolts; 3/8” x 3-1/4”

❑3Hex bolts; 3/8” x 2-1/2”

❑1Air conditioning bracket

❑1Heat riser extension tube; 3/8” x 6”

❑17 Lock washers; 3/8”

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