HOOKER BH2583 Lackheart Mid Length Headers Installation Guide

: June 13, 2024
: HOOKER

Table of Contents

Installation Instructions
PRE-INSTALLATION CONSIDERATIONS
COMPATIBILITY INFORMATION:
References
Read User Manual Online (PDF format)
Download This Manual (PDF format)

**HOOKER BH2583 Lackheart Mid Length Headers Installation Guide

**

Installation Instructions

Thank you for choosing to use HOOKER™ headers as part of your HEMI swap project. These headers are part of the most comprehensively engineered system of mounting components, headers and exhaust systems available for this application. The entire Hooker™ swap system is designed to decrease your total swap installation effort and cost while increasing the engineered quality of your vehicle.

PRE-INSTALLATION CONSIDERATIONS

Check that the hardware package includes the following: (16) M8 x 1.25 header bolts

If you are missing any hardware, please contact Technical Service at 1-866-464-6553 or 270-781-9741.

NOTE: Will not work with factory column shift linkage. Aftermarket column linkage or cable kits such as those offered by IDIDIT™ and others will have to be used if you wish to maintain column shift capability of your vehicle.

NOTE: These headers are geometrically/functionally compatible with 727, 46RE/RH, 545RFE, NAG 1, and 8HP automatic transmissions, Tremec T56, aftermarket T56 Magnum and TR6060 manual transmissions.

NOTE: The collector outlets of these headers are designed to be connected to a specific-designed Hooker exhaust system for this application, if using other exhaust systems it is recommended to use HOOKER 42107HKR adapter kit to attach to the headers.

NOTE: Designed to be used in conjunction with BHS524 swap brackets and BHS525 Crossmember with adapter depending on transmission of choice.

The instructions contained in this document assume you have already installed the engine and transmission in the vehicle with the above mentioned HOOKER™ mounting components per their instructions.

An automotive lift or a jack and jack stands will be required to safely raise and support the vehicle. CAUTION! WORK ONLY ON A LEVEL SURFACE. USE JACKS /JACK STANDS OF SUFFICIENT CAPACITY TO LIFT AND SUPPORT YOUR VEHICLE. NEVER WORK UNDER A VEHICLE SUPPORTED BY A FLOOR OR BUMPER JACK.

COMPATIBILITY INFORMATION:

These headers were specifically designed to be installed with HOOKER™ HEMI swap engine and transmission mounting components and exhaust systems for this same application. Attempts to install these headers with any other type or combination of engine and transmission mounting components may cause them to not provide their intended ground or vehicle component clearances, or compatibility with the related HOOKER™ exhaust systems.

INSTALLATION

Disconnect the negative cable from the vehicle battery, if connected.
Remove the engine oil dipstick tube.
Remove any transmission linkage present between the transmission and steering column.
Using an automotive lift or floor jack, lift the entire vehicle or front of the vehicle a minimum of 12” to 15” off the ground.
Remove any existing header/manifold that is installed and clean the cylinder head sealing surface.
Install the right side headers from below using an OE replacement gasket, you may find it easier to start a rear bottom bolt and slide the header flange over it to help hold.
Complete installation of remaining header bolts and tighten. It is recommended to use anti-seize on all hardware.
Starting on the left side, unplug and remove the knock sensor for installation.
Install the header using an OE replacement gasket, you may find it easier to start a bottom bolt and slide the header flange over it.
Complete installation of remaining header and tighten all bolts, it is recommended to use anti-seize on all hardware.
Reinstall the knock sensor and plug the harness back in.
Reinstall the engine oil dipstick tube, and any other items removed.
Install the O2 sensors into bungs, if using. Install O2 plugs (user supplied), if not using O2 sensors.
Reconnect battery if previously disconnected.

LIMITATION OF LIABILITY – DISCLAIMER:

The regulation of emissions production, noise levels, and safety standards is undertaken by the federal government, each of the fifty state legislatures, and by many local municipalities, towns, and counties. HOOKER™ makes no warranties of merchantability, of fitness for particular purpose, or that its products are approved for general use, or that its products are approved for general use, or that its products comply with laws, regulations, or ordinances in the state where they may be sold to the ultimate purchaser, the consumer.

Unless expressly stated to the contrary in the catalog, instruction sheet; or price list, the entire risk as to the conformity of any company product in any such state and as to repair should the product prove to be defective or non- conforming, is on the retail purchaser, the buyer, the ultimate consumer, of such product and it is not upon the seller, distributor, or manufacturer.

In this connection, the retail purchaser, the buyer, the ultimate consumer assumes the burden of the entire cost of any and all necessary service, alterations, or repair.

THE FOREGOING STATEMENT LIMITS THE LIABILITY OF THE MANUFACTURER.
California vehicle code, sections 27156 and 38391, prohibits the advertising, offering for sale, or installation of any device, which modifies a vehicle’s emission control system, unless exempted, unless otherwise noted. HOOKER™ Headers that have not received an

Executive Order (E.O.) exemption from these code sections are not legal for sale or use in California on vehicles originally equipped with catalytic converters, except for racing vehicles, which may never be driven upon a highway. Check with your local authorities to determine if these headers are legal for use in your particular area.

Technical Service: 1-866-464-6553
For online help, please refer to the Tech Service section of our website: www.holley.com

199R12385
Date : 6-21-22