PerTronix Dougs Headers D3337 User Manual
Page 2

Part No. 0110-003065
Page 2 of 3
rev.1 9-6-16 DSL
9.
Remove the oil dipstick and tube.
10. Remove both of the exhaust manifolds.
11. Remove the starter.
12. Replace the spark plugs finger tight so debris will not get into the cylinders while
cleaning the head surface. We recommend the use of a gasket scraper, wire brush,
and sanding block to adequately clean the surface.
13. After cleaning is complete remove the spark plugs again.
14. Remove the oil filter.
RIGHT SIDE:
1. Apply a THIN film of Ultra Copper Hi-Temp Sensor-Safe Silicone Sealer to engine
side of the header gasket.
2. Starting from below, work the header and gasket up through the chassis into
position.
3. Apply anti-seize to all header bolts being used. Start all header bolts.
4. Tighten all header bolts evenly (most restricted first) to 18 ft/lbs. on Aluminum
heads or 25ft lbs on iron heads.
5. Reinstall the right side spark plugs, wire looms, starter and dipstick tube and
dipstick.
6. Install the slip-on reducer and band clamp.
7. Cut the old exhaust pipe and weld as necessary to the new reducer.
8. Reinstall the O
2
sensor.
9. Reconnect the O
2
sensor to the O
2
harness with the supplied extension.
LEFT SIDE:
1. Apply a THIN film of Ultra Copper Hi-Temp Sensor-Safe Silicone Sealer to engine
side of the header gasket.
2. Starting from below, work the header and gasket up through the chassis into
position.
3. Apply anti-seize to all header bolts being used. Start all header bolts.
4. Tighten all header bolts evenly (most restricted first) to 18 ft/lbs. on Aluminum
heads or 25 ft/lbs on iron heads.
5. Reinstall the oil filter.
6. Reinstall the left side spark plugs, wire looms and any brackets.
7. Install the slip-on reducer and band clamp.
8. Cut the old exhaust pipe and weld as necessary to the new reducer.
9. Reinstall the O
2
sensor.
10. Reconnect the O
2
sensor to the O
2
harness with the supplied extension.
11. Connect the negative battery cable.