Edelbrock 3581 Installation Instructions

Catalog #3581

Rev. 7/06 - RS/mc

©2006 Edelbrock Corporation

Brochure #63-3581

Page1 of 2

EDELBROCK SINGLE TANK FUEL PUMP KIT

For Performer MPFI Installations (Except 1995 Tahoe)

Catalog #3581

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 or e-mail us at Edelbrock@Edelbrock.com.

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: This Fuel Pump Kit is necessary to complete the installation of all Performer Multi-Point Fuel Injection (MPFI) systems for 1987-95 TBI-

equipped Chevy/GMCs with single fuel tank (except 1995 Tahoe, which may use the original equipment fuel pump). Dual fuel tank vehicles must use

Dual Fuel Pump Kit #3580. Installation of this part is covered in the Performer Multi-Point Fuel Injection System installation instructions. For your

convenience, we have re-printed the fuel pump installation portion of those instructions here.

INSTALLATION PROCEDURE

1.

FUEL PUMP INSTALLATION

For the TBI multipoint conversion, it is necessary to install a high-

pressure fuel pump (#3581 for single tank vehicles, sold separately).

IMPORTANT NOTE: On trucks with dual tank set-ups, it will be

necessary to install Edelbrock Dual Fuel Tank Conversion Kit

#3580, available from your Edelbrock dealer, or call Edelbrock

directly for sales or dealer assistance. Dual tank vehicles  do

not require removal of the tanks or pick-up bed, as the new fuel

pump kit #3580 mounts on the vehicle frame. See installation

instructions supplied in kit.

To install pump

#3581 on single

tank vehicles, you

must gain access

to the top of your

fuel tank.

If you

have a Suburban,

you will need to

drain the fuel tank

and drop from the

rear of the vehicle.

If you have a truck,

we recommend

removing the bed

to reach the fuel

tank.

On truck

beds,

you will

usually find eight

mounting bolts,

two ground wires,

a couple of

weather pack electrical connectors (near license plate area), and

you will need to disconnect your fuel fill neck from the bed. With all

bed bolts and wires disconnected, four people can lift off the bed.

This takes about 20-30 minutes, which is much faster than draining

and removing tank.

With bed removed

you will see top of

the fuel tank. Use a

cleaning brush and/

or compressed air

and clean the top of

fuel sending unit

area so no debris

enters the fuel tank

when removing this

assembly. Disconnect two fuel lines, two hoses, and an electrical

connection with a ground wire. There is a center fuel pump sending

unit assembly lock ring holding the assembly into the tank.

Using a hammer and brass punch, gently strike open edge of lock

ring in a counter clockwise direction. Keep hitting until lock ring

rotates enough to release. Again blow or brush top area clean and

carefully remove the entire assembly.

Be careful on removal!  Take your time!

Ground

Connections

Fuel Tank