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2224HKR/02224HKR (Black 63-82 Corvette 265-400)

2224-1HKR (Coated 63-82 Corvette 265-400)

2224-3HKR (Stainless 63-82 Corvette 265-400)

2234HKR (Chrome 63-82 Corvette 265-400)

SUPER COMPETITION SIDE-MOUNT HEADERS

(1. Requires purchase of slip-in muffler, P/N 21021HKR or 21002HKR.)

(2. Vehicles equipped with air pump require P/N 02224HKR.)

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 headers for your application. Due to the restricted room available in the engine

compartment, your headers may be close to some body and chassis components. This condition is normal. The installation, while not

complex, may be time-consuming. However, as soon as you start your engine, 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 HEADERS.

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, so 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.

INSTALLATION PROCEDURE – PLEASE READ CAREFULLY

LEFT SIDE

1. Disconnect the battery to prevent electrical system damage.

2. Unbolt the stock headpipes from the exhaust manifolds. Remove the pipes and mufflers from the car.

3. Remove the generator/alternator (if mounted on left side), spark plugs, dipstick tube, exhaust manifold, and clutch linkage.

4. Remove the rocker panel molding. 1963-1967 models will need to be modified according to Figure A. 1968-77 models will need to

be modified according to Figure B. Replace the molding, but do not tighten.

Figure A

Summary of content (4 pages)

PAGE 1
2224HKR/02224HKR (Black 63-82 Corvette 265-400) 2224-1HKR (Coated 63-82 Corvette 265-400) 2224-3HKR (Stainless 63-82 Corvette 265-400) 2234HKR (Chrome 63-82 Corvette 265-400) SUPER COMPETITION SIDE-MOUNT HEADERS (1. Requires purchase of slip-in muffler, P/N 21021HKR or 21002HKR.) (2. Vehicles equipped with air pump require P/N 02224HKR.) Thank you for making HOOKER HEADERS your choice in a high-performance exhaust system.
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Figure B 5. Starting from below, work the head up through the chassis into position. NOTE: If the engine is equipped with Air Injection Tubes, remove them from the stock exhaust manifold and install in the fittings on the header. 6. Place the gasket into position and start all bolts (most restricted first). 7. Use Hooker muffler P/N 21021HKR or 21002HKR, that slips into the sidepipe before the pipe is installed. 8. Before tightening the header flange bolts, slip the sidepipe over the collector.
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Figure D Figure E RIGHT SIDE 1. Remove the air conditioning compressor (if equipped), generator/alternator (if mounted on right side), spark plugs, and stock exhaust manifold. 2. Remove, modify, and replace the rocket panel molding. See Figure A or B. 3. If generator/alternator was mounted on the exhaust manifold, purchase Hooker bracket P/N 10927HKR, to reinstall. See Figure D. If the header is equipped with smog bushings, the bracket must be notched to clear the bushings. See Figure E. 4.
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Figure H Figure I Figure J 7. Connect the battery, start the engine, and check for leaks. Be sure all brake lines, fuel lines, and electrical wires have sufficient clearance. Reroute, as necessary. 8. When finished, give your car a test drive, checking carefully for any new noises. After several days driving, retighten all bolts. Any questions? Please contact Technical Service: 1-866-GOHOLLEY or 270-781-9741. For online help, please refer to the website: www.holley.com.