PerTronix Dougs Headers D741 - Manual (Page 2)

Part No. 0110-003083
Page 2 of 4
Rev. 2 7-1-13 DSL
8. 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. Be careful not to get any material into the exhaust ports.
INSTALLATION
1. If your car has motor mount heat shields they will need to be discarded or modified for
maximum header clearance.
2.
Slip the driver’s side header into position from below.
3. If you cannot get the header into position, Place a floor jack with a wide piece of wood
under the oil pan. Remove the driver
’s side motor mount center bolt and raise the
engine approximately 1”. This is Not usually necessary on the driver’s side, but may
make it easier.
4. Lower the motor back into position and replace the center bolt on the motor mount.
5. With the header still loose in position slip the clutch linkage between the 3
rd
and 4
th
tubes.
6. Replace the starter motor and reroute the battery cable as necessary for maximum
clearance around the headers.
7. Slip the gasket into position and start the bolts. The 1
” long bolts with flat washers will
go in the ends of the flanges where the slots are. Doug’s recommends using a light coat
of High Temp Ultra Silicone on both sides of the gasket around the ports.
8. Tighten all bolts evenly to 35 ft lbs torque.
9. Replace the dipstick tube and the vacuum canister.
10. Modify the Auto trans linkage rods as seen in the Illustrations, or similar for clearance.
11. Place a floor jack with a wide piece of wood under the oil pan. Remove
the passenger’s
side motor mount center bolt and raise the engine approximately 1”. This is necessary
on the Passenger side
12. If your car has motor mount heat shields they will need to be discarded or modified for
maximum header clearance.
13.
Slip the passenger’s side header into position from below. Lower the motor back into
position and replace the center bolt on the motor mount. Check clearance at the rear
upper A Arm pivot, it MAY be necessary to grind a little material off the side closest the
header for clearance.
14. Slip the gasket into position and start the bo
lts. The 1” long bolts with flat washers will
go in the ends of the flanges where the slots are. Doug’s recommends using a light coat
of High Temp Ultra Silicone on both sides of the gasket around the ports.
15. Tighten all bolts evenly to 35 ft lbs torque.
16. Replace the Oil filter adaptor and oil filter.
17. On automatic trans cars make sure there is adequate clearance between the header
and the trans cooler lines. Re route as necessary.
18. If you are reusing the original head pipes, cut and weld as necessary to hook up to the
Doug’s header reducers.
19. Connect the negative battery cable and check your oil level.
IMPORTANT CHECK LIST