Edelbrock 8820 User Manual

©2010 Edelbrock Corporation

Part #8810-8812, 88104, 88114, 88124, 8816, 8817, 8820-8822

Rev. 3/10 - AJ/mc

Page 1 of 3

Brochure #63-0303

PLEASE study these instructions carefully before installing your new water pump. If you have any questions or problems, do not hesitate to contact
our Technical Hotline at: 1-800-416-8628.

• DESCRIPTION

The high performance Edelbrock water pump is designed for both street and racing applications. It is compatible with all O.E.M. accessories and
pulleys. It offers weight savings along with increased durability and cooling potential. An additional feature is the threaded tab for a cam stop that
can be used to pre-load the front cover and limit camshaft forward thrust. #8810 is a short leg pump for 1955-68 passenger cars and light duty
trucks, and 1969-70 Corvettes. #8811 is a long leg design for 1969-88 passenger cars and light duty trucks with small-block Chevrolet V8s and
4.3L 90° V6s (will not fit Corvette or vehicles with serpentine drive belt). #8812 is a short leg design for 1971-82 Corvettes with small-block V8s.
#8816, #8817, and #8819 are black anodized pumps for racing applications. #8819 also is equipped with -10 AN thread side outlets, rather than
NPT side water outlets. Polished Aluminum Water Pump #8820 fits the same applications as #8810; #8821 is the same as #8811; and #8822 is
the same as #8812.

• ACCESSORIES

Use #8830 Spacer Kit for short style pumps to clear competition camshaft gear drives and belt drives.
NOTE: Kit includes 1/2" thick water pump and crank pulley spacers.

• INSTALLATION

Installation is the same as for original equipment water pumps. Consult service manual for specific procedures, if necessary.

CAUTION: Be sure

that fan bolts don't protrude through the hub so far that they hit the water pump housing. NOTE: Removal of backing plate is not recommended,
as there are no user serviceable parts in the water pump. If backing plate is removed, use no sealer on O-ring equipped models, and use
conventional gasket sealer (not RTV silicone) on gasketed models.

Incorrect alignment or an unbalanced condition puts excessive
strain on the pump's shaft and/or bearing and will result in early
failure of the shaft and/or bearing. The balance of the assembly
depends primarily upon the concentricity of the fan clutch with the
pump shaft. Concentricity is not assured when universal type
clutches are used. The universal fan clutch has a 3/4" pilot hole,
so an adapter must be used when installing a water pump with a
5/8" shaft. This adapter bushing is supplied with the unit. These
adapter bushings add to the machine tolerances of the assembly,
so special care must be taken to maintain concentricity with the
shaft and the clutch fan.

• SPECIAL NOTES FOR #8811 & #8821

• #8811 & #8821 include power steering bracket spacer (.170"

thick) & alternator bracket spacer (5/8" thick).

• 1969-'76 vehicles (original pump casting #3853692) require the

included spacer to be placed between the pump and the
alternator bracket.

• Some applications (original pump casting #364790) require

power steering bracket spacer (included)

• Some vehicles (original pump casting #6263701) require a

through hole instead of the threaded hole for the power steering.
If this is the case, drill out the threads with a 3/8" drill bit.

• Check closely for any interference with drive belts; some filing for

clearance may be necessary with some applications.

• SPECIFICATIONS

Dimension from block surface to hub:
#8810

5-5/8"

#8811

6-15/16"

#8812/8816/8817

5-13/16"