Owners manual

ManualsBrandsGibson Performance ManualsAutomotiveGP126S Performance Header

GP126S

5.4L STAINLESS HEADER

HAS EGR FITTING

FORD EXCURSION 5.4L 2/4WD

FORD SUPERDUTY TRUCK

F250HD/F350HD 5.4L 2/4WD

GIBSON HEADERS ARE 50 STATE SMOG LEGAL

Thank you very much for purchasing our Gibson header

for your vehicle.

If you need further assistance, please do not hesitate to call our Technical

Department at

(800) 528-3044

Monday through Friday

8:00 a.m. to 5:00 p.m. PST.

1270 WEBB CIRCLE CORONA, CA 92879

Summary of content (6 pages)

PAGE 1
GP126S 5.4L STAINLESS HEADER HAS EGR FITTING FORD EXCURSION 5.4L 2/4WD FORD SUPERDUTY TRUCK F250HD/F350HD 5.4L 2/4WD GIBSON HEADERS ARE 50 STATE SMOG LEGAL Thank you very much for purchasing our Gibson header for your vehicle. If you need further assistance, please do not hesitate to call our Technical Department at (800) 528-3044 Monday through Friday 8:00 a.m. to 5:00 p.m. PST.
PAGE 2
WHEN THESE INSTRUCTIONS ARE FOLLOWED PRECISELY, YOU WILL FIND THE INSTALLATION OF YOUR EXHAUST SYSTEM TO BE RELITIVELY SIMPLE. WE CANNOT OVER EMPHASIZE THE IMPORTANCE OF ADHERING STRICTLY TO THIS PROVEN APPROACH, AS IT WILL VIRTUALLY ELIMINATE ANY DIFFICULTIES, WHICH YOU MIGHT OTHERWISE ENCOUNTER.
PAGE 3
SUGGESTED TOOLS 7/16” WRENCHES (VARIOUS LENGTHS) 7/16” SOCKETS (SHALLOW AND DEEP) ½” WRENCHES (VARIOUS LENGTHS) 9/16” SOCKETS (SHALLOW AND DEEP) 5/8” SPARK PLUG SOCKET 7/8” OPEN END WRENCH 15MM DEEP SOCKET 15MM BOX END WRENCH 31MM OPEN END WRENCH (A LINE WRENCH) 3”, 6”, AND 12” EXTENTIONS FOR SOCKETS SCREWDRIVERS AND/OR NUT DRIVERS (FOR HOSE CLAMPS) SAWZALL (HAND –HELD POWER HACK SAW) LUG NUT WRENCH HIGH TEMP SILICONE (ULTRA COPPER BY PERMATEX) GOOD RUST PENETRANT
PAGE 4
INSTALLATION INSTRUCTIONS NOTE: INSTALLATION OF THESE HEADERS REQUIRES AN ADEQUATE WORK SPACE, GENERAL MECHANIC'S TOOLS, GENERAL MECHANIC "KNOW-HOW" AND A REASONABLE DEGREE OF EXPERIENCE. 1. PLACE VEHICLE IN A LOCATION WHERE THE FLOOR IS SOLID AND FLAT, WITH ADEQUATE LIGHTING. DO NOT ATTEMPT TO WORK ON A HOT ENGINE. HEAT CAUSES METAL TO EXPAND AND MAKES REMOVAL OF FASTENERS DIFFICULT. DISCONNECT THE BATTERY CABLES FROM THE BATTERY.
PAGE 5
#5. STARTER SUPPORT ON THE BELL HOUSING 8. ON THE PASSENGER SIDE, AGAIN WORKING THROUGH THE WHEELWELL, REMOVE THE NUTS ATTACHING THE MANIFOLD TO THE HEAD THEN REMOVE THE MANIFOLD. REMOVE THE MANIFOLDS ATTACHING STUDS. 9. USING A SCRAPER REMOVE ALL CARBON DEPOSITS AND HIGH SPOTS FROM HEAD SURFACE, USE CARE NOT TO GOUGE THE ALUMINUM HEADS. 10. NOTICE ON THE DRIVERS SIDE HEADER THE UPPER BOLT HOLES ARE SLOTTED. INSTALL THE GASKET WITH THE HEADER BOLTS LEAVING AT LEAST 3/8 OF INCH GAP.
PAGE 6
21. IT IS RECOMMENDED AFTER THE INITIAL INSTALLATION THAT YOU RE-TOURQE THE HEADERS AT ABOUT 200 MILES. THEN 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) DRIVER'S SIDE HEADER ASSEMBLY (1) PASSENGER'S SIDE HEADER ASSEMBLY (2) HEADER GASKETS (HEADER TO HEAD FLANGE) (4) COLLECTOR BOLTS AND NUTS,WASHERS (16) 8mm X 1.