PerTronix Dougs Headers D450 - Manual

Part No. 0110-003005
Page 1
Rev 5 -3-27-13 DSL
HEADER INSTALLATION INSTRUCTIONS
Part # D450
APPLICATION
1963-1966 Dodge Dart, Plymouth Barracuda, and Valiant
273-360 LA Motor
** Please Read All Instructions before attempting installation! **
PerTronix © thanks
you for choosing
DOUG’S HEADERS, the best fitting, highest quality header on the market. In
order to realize the full potential of our good fit, 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 NUMBER
WILL BE STAMPED ON THE ENGINE FLANGE. 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 configuration of the frame, and/or the installation of different engines or aftermarket cylinder heads. Most installations
require some welding. If you are uncomfortable with welding operations, we recommend that you contact a professional
exhaust system specialist to install your new headers.
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.
Note: It is recommended that you use the Mopar Mini Starter, Part# P5249644AC for added
clearance and ease of installation. Required for 727 transmission
Note: The Original Bellhousing and Clutch in these cars fo r the 9.5” Clutch. Many have been
upgraded to the Aluminum Bellhousing and 10.5” Clutch. If your car has been upgraded, a special
clutch fork is required for this header to work. Please see explanation at the end of these
instructions before beginning the installation.
Note: This is a multi piece header and a very tight installation. Please allow plenty of time
and exercise patience when installing this header. It will be easier if you have a friend to
help hold the headers during installation. The flanges for the slip tubes are not cut all the
way at the factory to prevent damage to the header during shipping. You will need to cut the
flanges the remaining portion before installing the headers.
Corporate Office: PerTronix Inc. 440 E. Arrow Highway, San Dimas, California 91773 * Phone 909.599.5955 * FAX 909.599.6424 * www.dougsheaders.com