PerTronix Dougs Headers D326 - Manual (Page 2)

Part No. 0110-003104
Page 2 of 3
8-15-2011 DSL
9. Disconnect the head pipes from the exhaust manifolds.
10. Remove the stock exhaust manifolds.
11. Remove the gaskets and any gasket material or any carbon deposits that remain on the head
surface. The use of a gasket removal agent or scraper will ease the removal of any gasket
material. Use care not to get debris into ports or spark plug holes.
12. At this point it may be necessary to cut the head pipes to allow room to install the headers. If you
are installing a new exhaust system you may cut the head pipes any where you choose, but if you
are using the existing exhaust you need to cut the head pipes in the proper location so that they
will be able to be welded to the reducers supplied with your headers.
INSTALLATION
1.
From below, work the driver’s side header up into position and loosely install 2 bolts.
2. Slip the gasket into position and start all the supplied header bolts and lock washers.
3. If the power steering is mounted to the left side, use the supplied spacer to mount the power
steering and the original manifold bolt. See Illustration A.
4. Because this is a large diameter tube racing header, Column Shifted models will require linkage
modification. See Illustration B. If bending the cross shaft does not get the clearance you need, it
may be necessary to put a slight dimple in the header as well, this will not affect performance.
5. Tighten the header bolts evenly starting from the center to a final torque of 35 ft lbs. on iron heads.
6. Starting from below, work the passenger side header up through the chassis into position.
7. Hold the header in place with 2 bolts loosely installed
8. With the header loose, reinstall the starter motor. Make sure that the starter cables do not contact
the header tubes.
9. Slip the gasket into position and start all the supplied header bolts and lock washers.
10. Tighten the header bolts evenly starting from the center to a final torque of 35 ft lbs.
14. Install the reducers and determine the connection to the exhaust system.
15. Reinstall Oil Filter, Oil Dipstick tube, and Clutch Linkage.
16. Transmission Key Interlock ma not fit and might have to be eliminated.
17. Weld the reducers to the exhaust system and install them onto the headers utilizing the T Bolt
Band Clamps.
18. Install the spark plugs and connect the wires to the proper plug. Check to make sure that all the
wiring, brake lines, hoses, etc. are clear of the headers or any exhaust component.
19. Check the Oil level.
20. Connect the battery cables.
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.
 If dipstick tube was removed, make sure it is installed properly and that the dipstick has
been replaced.
 Double-check the tightness of all bolts including brackets and accessories
.
START THE ENGINE
Start the engine and allow it to warm up to operating temperature. Check for any unusual noises
or exhaust leaks. If everything is OK, stop the engine and tighten all bolts while the engine is still
warm. NOTE: Check the bolts periodically to make sure they have not loosened. Re-tighten after
the first 500 miles and then again at 1000 miles