PerTronix Dougs Headers D523 - Manual

Part No. 0110-003100
Page 1 of 3
7-15-2009 DSL
HEADER INSTALLATION INSTRUCTIONS
PART NUMBER: D523
1970-74 Pontiac Firebird 326-455
NOTE: These headers will ONLY work with Ram Air II/IV, Super Duty, HO, and Edelbrock
Performer RPM Heads. Some Pontiac Heads do not have bolt holes in the end of the
manifolds. These must be present for the headers to seal properly.
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.
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.
DISASSEMBLY
1. Disconnect the negative cable from the battery.
2. If a hoist is not available, raise the car 3 feet or higher and support with adequate jack
stands. Make sure the car is on a flat solid surface and is stable.
3. Unbolt the headpipes from the factory manifolds and move the exhaust out of the way.
4. Remove the spark plug wires and spark plugs. Remove the manifolds from the motor.
5. Remove the Oil Filter and Housing, the transmission/key interlocking device, the starter,
and clutch Linkage.
6. If equipped with Air Conditioning, loosen the bracket and slide the compressor out of the
way.
7. Remove the gaskets and any gasket material or any carbon deposits that remain on the
head surface. The use of a gasket removal agent will ease the removal of any gasket
material. Use care not to get debris into ports or spark plug holes.
Corporate Office: PerTronix Inc. 440 E. Arrow Highway, San Dimas, California 91773 * Phone 909.599.5955 * FAX 909.599.6424 * www.dougsheaders.com