Owners manual

6. Using the supplied fasteners, bolt the Header to the bottom flange. The nuts are jam nuts.
Therefore, they will not spin freely. This is normal. Torque to 30-35ft. lbs.
7. To reinstall the spark plug wire looms, use the supplied ½” tubular spacer and ¼” bolt. The
spark plug wire loom will now sit outward of the header flange rather than against the head.
8. The Passenger Side: Unbolt the manifold from the exhaust system from under the vehicle
as on the driver’s side. Remove the dipstick. Disconnect the spark plug wires from the
spark plugs. Unbolt the Spark Plug wire looms and put them up out of the way. The dip
stick tube is bolted to the head via the forward spark plug loom bolt. With the bolt removed,
the dip stick tube can be removed by gently wiggling the tube while pulling upward. (The
bottom of the tube is pressed into a receptacle in the engine.) Unbolt the manifold from the
head and remove. As with the driver’s side, clean the head flange and lower flange where
the header attaches to the exhaust system. Remember to remove the doughnut-shaped
gasket.
9. As with the driver’s side, apply anti-seize to the bolts, apply silicone to he Head flange
Gasket and dome flange, and bolt the headers to the head and the exhaust system.
Reattach the spark plug looms in the same manner as the driver’s side.
10. On Chevy Suburbans: The rear seat heater has an extra set of coolant hoses passing by
the headers on the passenger side. Take care to keep these hoses back away from the
headers. Use nylon ties, or some other method of preventing the heater hoses from
contacting the hot header tubes.
11. Recheck everything!
12. Start the engine and let it warm up. Check for leaks. Shut engine off and let it cool down.
Check to make sure all fasteners are tight.
13. Retorque headers after the first 200 miles.
14. Periodically check and retighten the header bolts/
NOTE: IT IS NOT UNUSUAL WHEN INSTALLING HEADERS TO GET
A BURNING SMELL. THIS IS NORMAL AND IT WILL GO AWAY!
Parts List:
(1) STAINLESS Driver’s Side Header Assembly
(1) STAINLESS Passenger’s Side Header Assembly
(12) 3/8” x 1” header bolts & lock washers
(2) Header gaskets (Header to Head flange)
(6) Collector Bolts, Nuts
(4) ¼” I.D. x ½” long tubular spacer for the spark plug looms
(4) ¼” x 1” bolts for the spark plug looms