PerTronix Dougs Headers D6670 - Manual (Page 2)

Part No. 0110-003058
Page 2
rev.1 11-19-13 DSL
3. Apply penetrating oil to all nuts and bolts to be removed.
4. Unbolt head pipes from stock exhaust manifolds.
5. Remove spark plugs, stock exhaust manifolds, bottom A-arm to frame brace (convertible
models), oil dipstick and tube.
6. Loosen the starter cable so it can be moved for clearance.
7. Replace the spark plugs finger tight so debris will not get into the cylinders while cleaning the
head surface.
8. Clean the cylinder head surface which mates to the header. Use a gasket scraper and wire
brush to make sure that the surface is absolutely clean.
9. After cleaning is complete remove the spark plugs again.
ASSEMBLY
1. Apply anti-seize to all header bolts being used.
2. Apply a THIN film of Ultra Copper Hi-Temp Sensor-Safe Silicone Sealer to the header side of
the 2 supplied gaskets and glue them to the headers. Masking tape can be used to help stick
the gasket to the manifold.
3. Apply a THIN film of Ultra Copper Hi-Temp Sensor-Safe Silicone Sealer to the engine side of
the left side header gasket.
4. If not using the O
2
sensors, screw in the provided plugs.
5. Starting from below, work the left side header up into place.
6. Start all of the header bolts for this header but leave header loose.
7. Apply a small amount of THIN film of Ultra Copper Hi-Temp Sensor-Safe Silicone Sealer to the
L-4 slip joint, install it and start those bolts.
8. Tighten all bolts evenly.
9. Apply a THIN film of Ultra Copper Hi-Temp Sensor-Safe Silicone Sealer to the engine side of
the right side header gasket.
10. On the right side, from the bottom, work the R-4 tube into position in front of the starter. Do not
start bolts yet.
11. Work tube R-3 on the outside of R-4, keeping it in front of the starter. Do not start the bolts yet.
12. Hold R-4 to the head at the correct exhaust port and tighten the cable on the starter with it
positioned for maximum clearance.
13. Apply a small amount of THIN film of Ultra Copper Hi-Temp Sensor-Safe Silicone Sealer to the
R-3 and R-4 slip joints.
14. Work the main body of header from the bottom up over the top of the starter. Insert tubes R-3
and R-4 into the slip joints.
15. Start all the bolts.
16. Apply a small amount of THIN film of Ultra Copper Hi-Temp Sensor-Safe Silicone Sealer to the
R-2 slip joint, install it and start the bolts. Torque all bolts evenly.
17. Re-install engine oil dipstick tube and dipstick. Note: It may be necessary to bend the dipstick
tube in order to clear the headers.
18. Tighten the header bolts evenly to a final torque of approximately 25 ft. lbs.
19. Reinstall spark plugs and plug wires.
20. Install reducers and attach exhaust system to reducers.
21. Make sure all of the other fasteners are tightened.
22. Connect the negative battery cable.