Step 1 – Vehicle Preparation
Remove the negative battery cable. With the vehicle on a solid level surface, chock the front wheels. Using a jack rated for the weight of your vehicle, raise the wheels off the ground. Lower the vehicle frame onto jack stands rated for the vehicle weight, making sure the suspension is fully extended. (Do not use wood or concrete blocks to support the vehicle.)
Step 2 – Remove the Coil Spring
Put a jack under the axle on the left side of the vehicle. Remove the lower bolt from the shock absorber. Lower the axle until the coil spring can be removed. Caution: DO NOT put tension or strain on the flexible brake line. Remove the jounce bumper located in the coil spring. The jounce bumper will not be reused. Drill a 3/8″ hole in the center of the lower spring seat for the air line to pass through. See Figure “C”.
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1. Raise and support vehicle at a safe, comfortable working height. Let the front suspension hang freely.
2. Remove coil spring, shock absorber, and bump stop. Refer to factory service manual for proper disassembly procedure.
3. A portion of the frame must be trimmed to clearance for the air spring. Mostly to the outside of the pocket but some must be done to the inside as well.
4. Apply thread sealant to a straight air fitting and screw it into the top of the air spring.
5. Place the upper air spring bracket on top of the air spring and fasten with two 3/8” Nyloc nuts and flat washers.
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• EGR SYSTEM: This manifold will not accept stock EGR (exhaust gas recirculation) equipment. EGR systems are used on some 1972 and later model vehicles and only in some states. Check local laws for requirements. Not legal in California on pollution-controlled motor vehicles.
• MANIFOLD: This manifold will not accept any O.E.M. carburetor systems. We recommend that you use the carburetors listed in the carburetor recommendations.
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The Edelbrock Performer #2146 & #2515 intake manifolds will work with 400, 430, and 455 c.i.d. big-block Buick engines. The Performer #2146 is designed to accomodate original cold air induction hoods, while the B4B #2515 relocates the carb pad for optimal fuel distribution. These manifolds optimize performance for engines operating in the idle to 5500 rpm range. They are compatible with OEM carburetors that use a divorced-style or electric choke only; hot air tube models will need to have their choke converted to electric or disabled. These intake manifolds are recommended for street rods and street high performance applications. When used with any mix of aftermarket equipment designed for idle to 5500 rpm operation, the performance increases will be even greater.
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Raise and support vehicle, allowing suspension to hang free.
Remove the wheel.
Disconnect the shock absorber electrical connector.
Support the lower control arm with a jack stand or screw jack in order to relieve the spring load.
Remove the lower shock absorber nut(s) and bolt(s).
Remove the upper mounting nut(s). On some models, the upper shock mounting nuts are located in the trunk behind the trim cover.
Remove the shock from the vehicle. On some models, you may have to compress the shock by hand to remove from the mounting.
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A Buick V6 has 11:1 compression, a high energy ignition and turns 5,000 rpm. With the specifications given, you will have to retard the timing for the high compression, low rpm and high energy ignition. By comparing the engine’s specifications against the chart, a usable timing guideline can be found. Engines with a combination of items from both columns will require a timing that is set in the mid range.
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Read all instructions before starting any work. This kit is designed to connect to DynoMax Blackjack painted / Cyclone ceramic coated, or competitive brand, full length Headers.
1. Bolt adapter plates 703828 to hangers 703825 and 159496 using the ⁵⁄₁₆”-18thd x ģ⁄₄” bolts and nuts provided. See the system diagram for parts identification. The plates will allow 2đ⁄₂” size saddle clamps to be connected to the hangers.
2. On the cross member frame of the vehicle, slightly forward of the rear axle, there is a set of two mounting holes on each side, LH and RH, which will be used to mount hanger 703825 on the LH side and hanger 159496 on the RH side. use the ⁵⁄₁₆” -18thd x 1″ bolts nuts provided.
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RaDIo FuncTIonS:
• How to get to the XM band
– Select XM1 or XM2 with the BAND button
• Tuning in XM channels
– Scroll through XM channels with the TUNE knob
– When you change channels, the radio will display the Channel Number/Name, then revert to the default display
– Press SEEK once to select the next channel, or press and hold for 2 seconds to scan through all channels; SCAN will be displayed. Press and hold for 4 seconds to scan through all preset channels; SCAN and the preset number will be displayed
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