2468-1HKR - Speedway Motors
Contents
1. BLY INSTRUCTIONS PLEASE READ THOROUGHLY amp CAREFULLY DISASSEMBLY 1 Disconnect the battery Raise the car and support it with jack stands 2 Disconnect amp remove the four oxygen sensors Mark their location so they may be reinstalled in their proper location 3 Remove the drive shaft safety brace Remove the Y pipe from the vehicle DISASSEMBLY OF THE LEFT SIDE From below remove the left side catalytic converter Disconnect and remove the left side A R tube assembly and spark plug wires Remove the spark plugs and the left side exhaust manifold Point the steering wheel straightforward and turn the key to the lock position and remove the key Remove the steering shaft Please take note of G M Pt Notice 26068010 which states To help avoid damage and possible malfunction of the air bag do not rotate the steering shaft with the steering shaft disconnected See the G M service manual before disconnecting 5 Remove the small left side heat shield deflector Remove the oil filter PON DISASSEMBLY OF THE RIGHT SIDE Disconnect and remove the right side A I R tube assembly Unbolt and remove the oil dipstick Disconnect and remove the spark plug wires Disconnect the EGR tube by removing the 2 two 8mm bolts DO NOT try to remove the tube Remove the spark plugs and the right side exhaust manifold It is not necessary to remove the starter for installation However it will allow for better access to the right side 4 spar2. P N 2468HKR painted 2468 1HKR ceramic coated amp KER 2468 2HKR stainless steel COMPETITION HEADERS eHEADERS 1998 99 Camaro Firebird Trans Am To complete Off Highway your system use P N 16723HKR 16723 1HKR or 16723 2HKR Y Pipe Thank you for making HOOKER HEADERS your choice in a high performance exhaust system Extensive dyno track testing has enabled HOOKER to offer the most advanced design in exhaust systems The installation while not complex will take a certain amount of time However the additional horsepower and improved performance will more than justify your efforts Proper installation and maintenance will ensure long life and maximum performance from your hooker exhaust system WARNING Breaking in an engine with ceramic coated headers WILL result in damage to the coating and will VOID all warranties Ceramic coated headers require several heat cycles to fully cure before they will withstand extreme heat HOOKER recommends using a cast iron exhaust manifold or an old header to break in new engines to avoid coating damage BEFORE STARTING Your vehicle must be raised a minimum of 36 inches A floor hoist is ideal If no hoist is available we strongly urge the use of axle stands as a safety measure CAUTION YOUR CAR SHOULD NOT BE SUPPORTED ON A BUMPER JACK HELPFUL HINTS FOR HEADER INSTALLATION AND MAINTENANCE 1 Verify the header part number with the part number on the box and invoice 2 Unless otherwise noted H
3. he gasket 3 Using the supplied 8mm lock washers over the factory exhaust bolts start all the header bolts prior to tightening then evenly tighten all the header bolts to 20 25 ft lbs Reinstall the spark plugs and tighten Reinstall the spark plug wires Check to ensure that they do not contact the header Reattach the EGR tube by reinstalling the 2 two 8mm bolts through the EGR plate Reinstall the dipstick and tighten the retainer bolt Reinstall the right side A I R tube assembly Install the right side pre catalytic converter oxygen sensor into the right side header collector NOTE The oxygen sensor simulator needs to be installed according to directions supplied by the simulator manufacture Use the 28 supplied extension to complete the simulator install 8 Reinstall the starter if removed NOOR NOTE These Oxygen Sensor Wire Extensions are made long enough to use either the oxygen sensor with the 8 wire length or the oxygen sensor with 12 wire length Any excess wire length after installation should be looped and secured into a non used and non heated cavity or pocket PRIOR TO FINISHING CHECK LIST Inspect the steering shaft for proper installation Check to ensure that no wires will come in contact with the headers Check to ensure that no l s and r s heat shields come in contact with the headers Check to ensure that all emission A I R hoses are clamped properly Check to ensure that any and all electrical con
4. k plug removal and header bolt installation OP ONS ASSEMBLY OF THE LEFT SIDE WITH HEADER NOTE Use anti seize on all header bolts and oxygen sensor threads Insert the left side header through the chassis from below From above install the gasket Using the supplied 8mm lock washers over the factory exhaust bolts start all the header bolts prior to tightening then evenly tighten all the header bolts to 20 25 ft Ibs Reinstall the steering shaft and tighten the bolt to factory specifications Reinstall the spark plugs and tighten Reinstall the spark plug wires Check to ensure that they do not contact the header Reinstall the left side A I R tube assembly Install the left side pre catalytic converter oxygen sensor into the left side header collector NOTE The oxygen sensor simulator needs to be installed according to directions supplied by the simulator manufacturer Use the 28 supplied extension to complete the simulator install ON 0 N 9 O1 NOTE These Oxygen Sensor Wire Extensions are made long enough to use either the oxygen sensor with the 8 wire length or the oxygen sensor with 12 wire length Any excess wire length after installation should be looped and secured into a non used and non heated cavity or pocket 9 Reinstall the small left side heat shield deflector and oil filter ASSEMBLY OF THE RIGHT SIDE WITH HEADER 1 Insert the right side header through chassis from below 2 From above install t
5. nections that were disconnected are properly reconnected Check to ensure that all oxygen sensor wires are looped and secured in a non used and non heated cavity or pocket NOTE Y PIPE PART NUMBER 16723HKR 16723 1HKR or 16723 2HKR IS RECOMMENDED TO BE USED AND INSTALLED WITH THIS HEADER P N 2468HKR 2468 1HKR OR 2468 2HKR 8 Reconnect the battery Start the car and check for leaks NOaaRwONMs LIMITATION OF LIABILITY DISCLAIMER The regulation of emissions production noise levels and safety standards is undertaken by the federal government each of the fifty state legislatures and by many local municipalities towns and counties HOOKER makes no warranties of merchantability of fitness for particular purpose or that its products are approved for general use or that its products are approved for general use or that its products comply with laws regulations or ordinances in the state where they may be sold to the ultimate purchaser the consumer Unless expressly stated to the contrary in the catalog instruction sheet or price list the entire risk as to the conformity of any company product in any such state and as to repair should the product prove to be defective or non conforming is on the retail purchaser the buyer the ultimate consumer of such product and it is not upon the seller distributor or manufacturer In this connection the retail purchaser the buyer the ultimate consumer assumes the burden of the entire cost
6. of any and all necessary service alterations or repair THE FOREGOING STATEMENT LIMITS THE LIABILITY OF THE MANUFACTURER California vehicle code sections 27156 and 38391 prohibits the advertising offering for sale or installation of any device which modifies a vehicle s emission control system unless exempted unless otherwise noted HOOKER Headers that have not received an Executive Order E O exemption from these code sections are not legal for sale or use in California on vehicles originally equipped with catalytic converters except for racing vehicles which may never be driven upon a highway Check with your local authorities to determine if these headers are legal for use in your particular area 199R10380 Revision Date 1 2 15
7. ooker Headers are designed to fit without modifying the header denting cutting DO NOT modify the header Call Holley s Technical Department at 270 781 9741 3 Unless other wise noted Hooker Headers are designed to fit with original equipment i e Oil pan cylinder heads mounts bell housings starters etc 4 When using Hooker Headers it is recommended to use Hooker gaskets for correct port match When using other than the recommended Hooker gaskets match the gaskets to the head ports for a good seal 5 Heat wrapping is not recommended because it will prematurely fatigue the header 6 Headers that are subjected to extreme conditions mud road salt etc should be cleaned on a regular basis to help prevent corrosion 7 When installing the headers use anti seize on header bolts and Y pipe bolts SPECIAL COMPONENTS NEEDED FOR ASSEMBLY 1 Oxygen Sensor Simulator May be purchased from the following SLP Part 31036 Phone 732 349 2109 or Mid America Designs Inc Part 609132 Phone 217 347 5591 2 Oxygen Sensor Wire Extension s 2 each 28 Long Included with Header NOTE These Oxygen Sensor Wire Extensions are made long enough to use either the oxygen sensor with the 8 wire length or the oxygen sensor with the 12 wire length Any excess wire length after installation should be looped and secured into a non used and non heated cavity or pocket HEADER INSTALLATION PROCEDURE DISASSEMBLY amp ASSEM
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