Owners manual

7) ON THE PASSENGER SIDE REMOVE SPARK PLUG WIRES AND SPARK
PLUGS AND SET ASIDE. DISCONNECT THE EGR TUBE FROM THE
MANIFOLD, REMOVE THE BOLT ATTACHING THE DIPSTICK TUBE BRACKET
TO THE HEAD.THEN REMOVE THE DIPSTICK.
EGR TUBE FITTING
8) REMOVE THE SIX BOLTS ATTACHING THE MANIFOLD TO THE
HEAD. REMOVE THE MANIFOLD.CLEAN THE SURFACE OF THE
HEAD. REMOVE ANY CARBON DEPOSITS THAT MAY BE ON THE
HEAD.PREPARE THE SUPPLIED HEADER BOLTS WITH ANTI-SEIZE
TO THE THREADS.
9) INSTALL THE NEW HEADER USING THE SUPPLIED HEAD
GASKETS AND BOLTS. RECONNECT THE EGR TUBE WITH
SUPPLIED GASKETS AND HARDWARE. WE SUGGEST USING
ULTRA COPPER GASKET SEALER ON BOTH OF THE HEAD
GASKETS.TIGHTEN THE GIBSON HEADERS FROM THE
MIDDLE BOLTS TO OUTSIDE BOLTS.
9A) WE HAVE FOUND ON SOME VEHICLES THAT THE A/C HEAT
SHIELD COMES IN CONTACT WITH OUR HEADER. A THICK
WASHER MAY NEED TO BE ADDED BEHIND THE HEAT SHEILD
ON THE LOWER PASSENGER SIDE BOLT THAT ATTACHES THE
SHIELD.
10) REINSTALL THE DIPSTICK TUBE, THE SPARK PLUGS
AND WIRES. USING THE SUPPLIED FASTENERS,
RECONNECT THE HEADERS TO THE STOCK EXHAUST
UNDERNEATH THE VEHICLE.
11) FINALLY, MAKE SURE ALL BOLTS ARE TIGHT AND EVERYTHING IS RE-CONNECTED. START THE ENGINE AND
LET IT WARM UP. CHECK FOR LEAKS. TURN ENGINE OFF AND MAKE SURE ALL BOLTS ARE TIGHT.
RE-TORQUE HEADERS AFTER 100-200 MILES
PERIODICALLY CHECK AND RE-TIGHTEN THE HEADER BOLTS. IF YOU DON’T RE-TORQUE YOUR
HEADER BOLTS YOU COULD DEVELOP A LEAK AT THE HEAD GASKET.
THIS IS NOT COVERED UNDER WARRANTY.
PARTS LIST
(1) 1 PASS SIDE HEADER ASSEMBLY (11) 2 ¼” NUTS
(2) 1 DRIVER SIDE HEADER ASSEMBLY (12) 2 HEAD FLANGE GASKETS
(3) 12 8MM HEADER BOLTS (13) 1 EGR GASKET
(4) 12 8MM LOCK WASHERS
(5) 3 3/8” – 1 ½” PASSENGER SIDE COLLECTOR BOLTS
(6) 3 3/8” – 2” DRIVER SIDE COLLECTOR BOLTS
(7) 6 3/8” LOCKWASHERS
(8) 6 3/8” NUTS
(9) 2 ¼” 1” BOLTS
(10) 2 ¼” LOCKWASHERS