PerTronix Dougs Headers D3345 - Manual (Page 2)

Part No. 0110-003081
Page 2 of 3
rev 2 8-15-2011 DSL
4. Unplug the oxygen sensor from the left side manifold.
5. Remove spark plug wires, spark plugs, and oil dipstick.
6. Remove the 8 manifold bolts from each manifold and remove the manifolds and spark
plug heat shields.
7. On 4WD trucks, remove the oil filter.
8. Remove the starter motor.
9. Remove the heat shield from the floor on the right side. The lip on the floor where it
meets the firewall will need to be flattened with a hammer to make clearance for header
installation.
10. Remove the gaskets and any gasket material or carbon build up that remains on the
head surface.
11. Modify the Spark
Plug Heat Shields by cutting 5/16” from the end of the shields as
shown in Illustration A
INSTALLATION
1. Starting on the Right (Passenger) side working from below, slip the header into
position.
2. With the header loosely in position, reinstall the floor heat shield. You will only be able
to use the outside screws.
3. With the header still loose, reinstall the starter.
4. Apply a THIN film of Ultra Copper Hi-Temp, Sensor-Safe Silicone Sealer to each side
of the header gasket and stick the gasket to the header flange.
5. Install the right side header, modified spark plug shields, and gasket using the supplied
bolts and washers. Torque to 30-35 lbs/ft. Tighten the center two bolts first and then
work your way out.
6. Install the spark plugs, spark plug wires, and dipstick.
7. Working from below, slip the Left
(Driver’s) side header into position.
8. Apply a THIN film of Ultra Copper Hi-Temp, Sensor-Safe Silicone Sealer to each side
of the header gasket and stick the gasket to the header flange.
9. Install the Left side header, modified spark plug heat shields and gasket using the
supplied bolts and washers. Torque bolts to 30-35 lbs/ft. Tighten the center two bolts
first and then work your way out.
10. Install the spark plugs and plug wires.
11. Replace the Oil filter, if removed and check oil level.
12. Plug the Oxygen Sensor back in.
13. Double check that everything is tight and installed and then connect the negative
battery cable.
IMPORTANT CHECK LIST
Be sure that all brake lines and fuel lines are clear of headers and/or connector
pipes.
All spark plug wires, battery cables, or other electrical components should be clear
of headers and/or connector pipes.