PerTronix D332 User Manual

Corporate Office: PerTronix Inc. 440 E. Arrow Highway, San Dimas, California 91773 * Phone [phone] * FAX [phone] * www.dougsheaders.com

HEADER INSTALLATION INSTRUCTIONS

Part #D332

APPLICATION

1970-81 Camaro, 1970-81 Firebird

396-502 Big Block (Std. Deck Only)

NOTE: Camaro MUST have BIG BLOCK Motor Mounts and Stands (frame brackets). Small

block and universal aftermarket will NOT work.
NOTE: Firebirds must use Correct Camaro BIG BLOCK Motor Mounts and Stands (frame

brackets). Small block and universal aftermarket will NOT work.

NOTE: Will NOT fit with 825 Saginaw Power Steering box (will work with 625 box)
NOTE: This is a 2 1/8” racing header and as such will be very tight in your engine

compartment. Extreme Patience is recommended during installation.

PerTronix©

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.

thanks you for choosing

DOUG’S HEADERS

, the best fitting, highest quality header on the market. In

DISASSEMBLY

1. Disconnect the negative battery cable from the battery.

2. If a car lift is not available, raise the vehicle 2 feet or higher and support it with adequate safety
stands. Make sure the vehicle is on a flat solid surface and is stable.

0110-003109 Page 1 of 3 8-15-2011 DSL

3. Apply penetrating oil to all nuts and bolts to be removed.

4. Remove and mark all spark plug wires and then remove all spark plugs.
NOTE: Grasp spark plug boot, not the wire, and use a twisting motion while pulling the wire
from the plug.

5. Disconnect the exhaust pipes from the exhaust manifolds and remove the manifolds. Remove
the Dipstick, Oil Filter, Oil Pressure Sending unit, Clutch Linkage, and Air Conditioning
compressor. These headers will not work with A/C.

6. Remove the Bell crank and lower rod from the transmission to key locking device.

7. Remove 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. Be careful to not get
any debris in the spark plug holes or exhaust ports

8. At this point it may be necessary to cut or remove the exhaust pipes to allow room to install the
headers. If you plan to reuse your existing exhaust, it is recommended that you remove the
exhaust and then cut it to fit after the headers are installed.

INSTALLATION

LEFT SIDE

1. Starting from below, work the header up through the chassis and into position.

2. Start a bolt on each end of the header to hold in place. Do not tighten at this time.

3. With the header still loose, work the clutch linkage back into position.

4. Reinstall and fully tighten all linkages, the oil pressure sender, and the oil filter.

5. Slip the gasket into place and install all of the header bolts and lock washers supplied and
hand tighten. Tighten all the bolts evenly to a torque of approximately 35 Foot Pounds on iron
heads, working from the center outward.

RIGHT SIDE

1. Place a jack with a board between the jack and the oil pan to support the motor. Loosen the

transmission mount bolts or nuts. Remove the left side motor mount and jack the motor up 2”

minimum. Starting from below, work the header up through the chassis and into position. Start
a bolt on each end of the header to hold in place. Do not tighten at this time.

2. Lower the engine back into position and replace the motor mount.

3. Replace the Starter Motor.

4. Slip the gasket in place and install all of the header bolts and lock washers supplied and hand
tighten. Tighten all the bolts evenly to a torque of approximately 35 Foot Pounds on iron
heads, working from the center outwards.

5. On automatic transmission cars, check that the transmission cooler lines do not contact the
header tubes. Re route as necessary.

6. Install the reducers and determine the connection to the exhaust system.

7. Weld the reducers to the exhaust system and install them onto the headers utilizing the
gaskets and bolts supplied.

8. Install the spark plugs and wires.

9. Re install the dipstick and check the oil level since you removed the filter.

10. Check to make sure that all the wiring, fuel lines, transmission cooler lines, brake lines, hoses,
etc. are clear of the headers or any exhaust components and reroute or relocate those
components as necessary.

11. Connect the battery cable.

0110-003109 Page 2 of 3 8-15-2011 DSL