JBA 6611SJT User Manual

Corporate Ofce: PerTronix Inc. 440 E. Arrow Highway, San Dimas, California 91773 * Phone [phone] • FAX [phone]

Installation Instructions

and Warranty Information

For JBA Headers 1965-1973 289/302 Mustang

NOTE: This application is for vehicles with factory power steering.

You will need a new bracket to lower the power assist ram mount on the frame.

Use JBA bracket part no. 6656B or equivalent



P/N 6610S, 6611S

WARNING: The product accompanying this document is legal only for off-highway use (except in California or

states that have adopted California emission standards), racing use or for use on pre-emission-controlled motor

vehicles/motor vehicle engines (pre-1966 domestic vehicles certied to California standards, pre-1968 domestic

vehicles certied to federal standards and all pre-1968 foreign vehicles), per the manufacturer’s application guide.

Read all instructions carefully before attempting installation.

Rev. 06/11

PerTronix© thanks you for choosing JBA HEADERS, the best tting, highest quality
header on the market. In order to realize the full potential of our good t, please read and

understand these instructions completely prior to starting work.

Check to make sure you received the proper parts for your application. The header num-

ber will be stamped on the engine ange. If you are unsure you have received the proper

parts call before you start work.

Be sure to work safe! Whenever you work under the vehicle be sure that it is located on

level, solid ground and is supported by adequate safety stands! Remember: Hot asphalt

will not support most jack stands!

Many factors affect the installation of headers, some of which are broken or aftermarket

motor mounts, accidents that impact the conguration of the frame, and/or the installation

of different engines or aftermarket cylinder heads.

Attention Customers breaking in new engines: Due to the extreme heat generated dur­ing the break-in process, the appearance of the ceramic coating may be altered in certain
areas. The protection characteristics and thermal barrier properties of the coating is never
compromised. It is recommended that a cast iron manifold or old set of headers be used for
this process.

Notice: The coating of these headers can be marred or scratched during installation. If the

header needs to be returned and is damaged, you will be charged for recoat.

JBA uses sealing beads on all its headers. We have found that when installed correctly, the
raised bead around each port increases the pressure exerted on the gasket directly adjacent to
the port and effectively prevents leaking gaskets. It is normal for the ange to be raised off the

cylinder head the thickness of the sealing bead. It is important when installing the header, to in-

stall all bolts loosely, then tighten evenly to ensure the at installation of the ange. The torque
sequence from one ange to another will vary, but generally every bolt on a header should be
rst t snug, starting from the inside of the ange working out, alternating from top to bottom so
that the bolt connects the ange to the manifold to the point where they barely touch. Second,
using the same inside-out pattern, tighten each bolt until nished. This method will help prevent

leakage and will give the user the best possible performance out of their pair of headers.

Installation of these headers requires an adequate work space, general mechanic’s tools, general
mechanical “know-how” and a reasonable degree of experience. Most auto enthusiasts with
these resources will have little difculty installing these headers. However, you should carefully

read these instructions before attempting to install these headers. If in doubt, consult a profes-

sional mechanic. (Better to do it now than to get stuck half-way through the installation.)