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©2010 Edelbrock LLC

Brochure #63-1551

Page 1

Edelbrock E-Force Supercharger Kits
Rev. 7/10 - AJ/mc

EDELBROCK E-FORCE SUPERCHARGER KITS

Part #1551, 15511, 1552, 15521, 1553, 15531, 1554,

15541, 15611, 15621, 15631, 15641

INSTALLATION INSTRUCTIONS

®

PLEASE

study these instructions carefully before beginning this installation. Most installations can be accomplished with common tools and

procedures. However, you should be familiar with and comfortable working on your vehicle. If you do not feel comfortable performing this installation,
it is recommended to have the installation completed by a qualified mechanic. If you have any questions, please call our 

Technical Hotline at:

1-800-416-8628

, 7:00 am - 5:00 pm, Pacific Standard Time, Monday through Friday.

IMPORTANT NOTE: Proper installation is the responsibility of the installer.  Improper installation

will void your warranty and may result in poor performance and engine or vehicle damage.

DESCRIPTION:

Edelbrock E-Force Supercharger kits are designed for 302-400 C.I.D. small-block Chevrolet engines. These kits are capable of

producing over 500 HP on most applications. Superchargers will accept standard flange 4-bbl carburetors. Some kits include an 800 CFM Thunder
Series AVS carburetor (See “Applications” below). Kit includes all items necessary for installation on most small-block Chevrolet applications. Some
modification or aftermarket parts may be required for your particular application such as throttle/kickdown bracketry and cables, waterneck, and
accessory pulleys.

Kits will work on LONG-STYLE water pump applications ONLY (unless otherwise mentioned) and are not compatible

with HEI distributors due to clearance.

Please read “Before Beginning Installation” section for additional details.

APPLICATIONS:

For Small Block Chevrolet Using Stock V-Belt Driven Accessories

#1551 (As Cast) / 15511 (Polished):

Engines with 1986 and earlier (standard bolt-pattern) cylinder heads.

#1552 (As Cast) / 15521 (Polished):

Engines with Vortec/E-Tec style cylinder heads.

#1553 (As Cast) / 15531 (Polished):

Engines with 1986 and earlier (standard bolt-pattern) cylinder heads. Includes carburetor.

#1554 (As Cast) / 15541 (Polished):

Engines with Vortec/E-Tec style cylinder heads. Includes carburetor.

For Small Block Chevrolet Using Billet Specialties Tru Trac Pulley System

**

#15611 (Polished):

Engines with 1986 and earlier (standard bolt-pattern) cylinder heads.

#15621 (Polished):

Engines with Vortec/E-Tec style cylinder heads.

#15631 (Polished):

Engines with 1986 and earlier (standard bolt-pattern) cylinder heads. Includes carburetor.

#15641 (Polished):

Engines with Vortec/E-Tec style cylinder heads. Includes carburetor.

**Kits require short-style, reverse-rotation water pump

.

BEFORE BEGINNING INSTALLATION

WARNING: EXPOSED FUEL AND OIL WILL BE PRESENT DURING THIS INSTALLATION.  WHEN WORKING AROUND 

GASOLINE OR OIL, ALWAYS WORK IN A WELL VENTILATED AREA, AND KEEP ALL OPEN FLAMES, SPARKS, AND OTHER 

SOURCES OF IGNITION AWAY FROM THE WORK AREA.  FAILURE TO DO SO CAN RESULT IN A FIRE OR EXPLOSION.

WARNING: SOME PROCEDURES IN THIS INSTALLATION MAY REQUIRE THE VEHICLE TO BE RAISED ON JACKSTANDS OR A LIFT.

WHEN RAISING A VEHICLE, MAKE SURE THE VEHICLE IS ON LEVEL GROUND AND SUPPORTED SECURELY BY JACKSTANDS.  

NEVER WORK UNDER A VEHICLE THAT IS SUPPORTED BY A JACK ONLY!

BEFORE BEGINNING:

Someone who has a basic knowledge of automobile repair and modification and is familiar with and comfortable with working

on their vehicle can accomplish the mechanical installation of this kit using common tools and procedures. However, successful operation of the engine
with this supercharger kit requires a working knowledge of the set-up and tuning of an engine. Keeping a service manual for your vehicle on hand for
reference is helpful. This supercharger kit is capable of supporting over 500 HP and will substantially increase the power output of your engine.

Before installing this kit, you should ensure that your engine is in good condition and is capable of supporting these power levels

.

Consult a Factory Service Manual for the proper compression test procedure and acceptable in-service limits. This kit is intended to be used on
modified street/strip engines. The required modifications to your engine and fuel delivery system are dependent on the boost pressure and power
output. Aftermarket pistons, connecting rods, and valves are recommended to assure engine durability. See “Boost and Ignition Timing” on the next
page for further information. The higher power output will require an aftermarket high-volume fuel pump such as Edelbrock #1711 (130 gal/hr), 1721
(110 gal/hr), 17000 (175 gal/hr), 1791 (120 gal/hr, electric), or 1792 (160 gal/hr, electric). The valve lash or lifter preload should be properly adjusted.

Summary of Contents for 1551

Page 1: ...ecialties Tru Trac Pulley System 15611 Polished Engines with 1986 and earlier standard bolt pattern cylinder heads 15621 Polished Engines with Vortec E Tec style cylinder heads 15631 Polished Engines with 1986 and earlier standard bolt pattern cylinder heads Includes carburetor 15641 Polished Engines with Vortec E Tec style cylinder heads Includes carburetor Kits require short style reverse rotati...

Page 2: ...being less able to consume the air flow being provided by the supercharger As RPMs increase this effect is more noticeable as pressure builds up in the intake manifold Higher flowing engines may see less boost pressure due to their ability to use more of the air being pushed into the engine by the supercharger It is possible to look for this effect by reading boost pressure midway through the engi...

Page 3: ...Standard Bolt Pattern Kits Only 2 3 8 16 x 1 75 Long 625 Shoulder Bolt Intake Manifold Standard Bolt Pattern Kits Only 4 5 16 18 x 1 75 Long Bolt Intake Manifold Vortec E Tec Bolt Pattern Kits Only 4 5 16 18 x 2 5 Long Bolt Intake Manifold Vortec E Tec Bolt Pattern Kits Only 8 1 4 20 x 1 Long Bolt Manifold Top Plate to Intake Manifold 4 5 16 18 x 1 Long Bolt Manifold Top Plate to Intake Manifold S...

Page 4: ...int C Note position of distributor vacuum canister and place one type of mark on valve cover or firewall in line with the vacuum outlet This will be used as a reference However you may have to re align the distributor to clear the supercharger after installation D Note position of points or magnetic trigger wheel if open how much if closed note the distance from point block to cam lobe See Figure ...

Page 5: ...ll prevent the possibility of bolts backing out and falling into the intake manifold resulting in severe engine damage Make sure to clean bolt threads and bolt hole threads prior to applying thread locking compound Torque bolts to 25 ft lbs Follow the sequence shown in Figure 6 For E Tec Vortec applications install the four 4 outermost bolts ONLY and DO NOT TIGHTEN Snug these bolts by hand with a ...

Page 6: ...ulder bolts and 3 8 lock washers See Figure 12 Install the supplied 7 16 20 x 2 75 balancer bolt with a 7 16 lock washer first and snug the bolt down until the pulley is flush Do not fully tighten at this time Slip the drive belt over the top and bottom pulleys and make sure the pulleys are in line If they are not aligned remove the drive belt and pulley from the crankshaft and use the provided sh...

Page 7: ...o the Edelbrock intake manifold and connect any wires Connect vacuum lines replacing with longer or shorter vacuum hoses as required 15 Reinstall valve covers Replace gaskets if necessary 16 Reinstall the radiator hoses thermostat and thermostat housing NOTE Some applications may require using a different thermostat housing to clear the supercharger snout This may also require using a different up...

Page 8: ...28 VACUUM ROUTING Bypass Valve Vacuum Supply DO NOT REMOVE Standard Vacuum Ports Any accessory that is vacuum driven should be connected here This includes brake boosters some transmission kickdowns and any vacuum actuated servos such as windshield wipers power windows etc Manifold Vacuum Boost Port This port should be used for any boost indexed ignition retard device ...

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