20 80 C3 rear trailing arms are made from boxed steel and welded for strength. Four 9/16-inch bolts fasten the half-shaft to the trailing arm bearing. Both of the old bushings should now be out of the control arm. Filter 30, Torque Arm to Frame 90 You can adjust the strut rods to change the rear suspension camber setting on your Corvette. Use a hammer to strike the pickle fork to knock the trailing arm away from the bearing support. Start by using a tie rod separator to separate the outer tie rods from the spindle arm. However, if you are going to aggressively drive your Corvette or use it for autocross competition, install a front spring with a higher spring rate. Arm Stud Do not tighten the two bolts that secure the upper control arms rubber or poly bushings until the car is ready to be driven. These rubber bushing are strong enough to absorb the impact under most conditions. The old shaft protruded about 1/8" past the nut and the new one sticks out just a little past flush. It is virtually impossible to get this wrong because the sector shaft is splined. Plug That design remained virtually unchanged for the next 20 years. The large gray carpet remnant makes the reassembly process more comfortable and dropped parts are more easily found. 1963-1982 Corvette Front and Rear Suspension Assembly. This helps keep critical parts within easy reach. A piece of wood or a half piece of pipe is placed on the inside of the control arm to keep the arm from bending while the bushings are being pressed into the control arm. It should not bind after installation. You might have to wait until the weight of the engine compresses the springs enough to install the links, or have some friends sit on the frame to help make the connection. Now you have a special control arm support tool. All of these components should be evaluated, inspected, and repaired or replaced as necessary. This is a manual steering application, which is why power steering components are not seen in this photo. When they have separated, remove the ball joint nut and pull the control arm out of the spindle. This marks the gears with the dye and shows your gear pattern. They provided a better ride and reduced the unsprung weight of the rear suspension. New parts have been welded into place by a professional Corvette repair shop. Replacement of this system is straightforward because Chevrolet made it so simple to service. With all the new parts installed, you want to have your Corvettes front suspension set to factory specifications. Once the bolts have been secured, install the upper control arm bracket. 50, Upper Ball Joint Nut Product Details. When installing the control arm, dont forget to replace the factory alignment shims (two in the rear and one in the front). A C3 Corvettes differential is the centerpiece of the cars rear suspension. Install a cotter key through the opening and bend back the two wires to prevent the nut from coming loose. The front wheels should have a toe-in of 1/8 to 3/8 of an inch. Pump The block is attached to the Pitman arm gear that turns the steering system when it moves back and forth. 70 Exhaust 34: Install the new rubber insulators and sleeve into the steering ram frame mount. Use a long pry bar or long screwdriver to push the lower part of the spring into the lower spring well. http://www.chevelles.com/forums/album.php?albumid=2153&pictureid=21505, http://www.chevelles.com/forums/album.php?albumid=695&pictureid=6156, http://www.chevelles.com/forums/album.php?albumid=428&pictureid=4468, http://www.chevelles.com/forums/album.php?albumid=826&pictureid=7810, http://www.chevelles.com/forums/album.php?albumid=834&pictureid=7834. Universal I call it a refresh. Attach a nut to the bottom of the bolt using a 7/8-inch socket on the nut and a 13/16- inch wrench on the bolt head and torque it to 100 ft-lbs. The difference in pumps is more about pump reservoir shape, fittings and shaft type than anything else. Classic C2 and C3 Vettes have a conventional Saginaw worm-and-sector steering gear, which does the job quite well unless you'd prefer less steering effort. Camber The dust caps are used to cover and protect the front wheel bearings. This has to be done with the weight of the car on the suspension. Do not torque the end cap bolts on the shafts yet. 70, Upper 50, Upper (You can also use a large punch or another piece of solid metal.) Clutch discs9. Torque these bolts to 35 ft-lbs. A large rubber bumper is attached to the lower control arm. (Van Steel uses a special fixture to press the spindle out of the bearing support.) If your backlash is too large or too small you can shift the shims from one side to the other. Much has happened since our kick-off of the Project. Torque sensitive drives are particularly suited to those applications where immediate response to torque demand is required for down shifting and engine speed is ideally maintained at its peak rpm. This system works very well when the lines are properly connected and the seals have integrity. With the center of the spring secure, install the spring end links. This frame has been carefully placed on four safety stands and four large pieces of cardboard to protect the frame from any scratches. $14.75 shipping. Spark Slide the bushings onto the stabilizer bar and into place. Distributor There is one of each screwed to each sleeve so be careful and do not try to force a tie rod onto the new sleeve. The antiroll bar end is attached to the lower control arm with a link. Place a dial indicator over the rotor to to verify rotor trueness. Large tables are an excellent place to organize these pieces. 4 Items. Spark Push the inner seal onto the spindle assembly. Fitment. The installation procedure is the same for all front coil springs. Plugs Install the washer. in/lbs, Rear Spring to Carrier 02: Jack the front of the Corvette up and let the front suspension hang. Outlet to Pinion Flange It uses rubber bushings and washers to minimize noise in the car. We take orders in our showroom or you may call your order in over the phone and we will prepare your items in advance so you do not have to wait. You may have to use a small wrench on the upper shaft to prevent it from turning as you tighten the 9/16- inch nut. You are on the upper end of the torque range with your 150# reading. If you find this problem replacing the bearings and shims should correct the issue. Four bolts with 9/16-inch heads fasten both strut rods. The easiest way to prepare the differential for installation is to place it onto a floor jack. The date code is irrelevant unless youre really trying to re-create [Click here to read more], If oil is the lifeblood of your engine, then the oil pump and lubrication system are indeed the heart and circulation system of your big-block Chevy. The rotor is now ready to be installed. Do not overtighten this nut because the bearing could seize. The movable face angle of all Comet asymmetric system drivers and drivens is 18 degrees, their "stationary" (opposing) face is 2-1/2 degrees and the Comet asymmetric belt angles likewise correspond. If you have someone stand on the upper control arm during this procedure, installing the steering knuckle is easier because the suspension is being compressed from above and below. The steering knuckle spindle plays a crucial role in front suspension dynamics. drag link (center link) - part #3740402 (See the part in the middleof Photo #12.) 38: The front shocks can now be re-installed. We Mounted tires to make this job easier. Torque them to 30 ft-lbs. Organize and inventory your parts before starting the assembly process. (See Photo #16A.) This job is easier if someone is helping. Steering knuckle to lower ball joint: 90 Ball joint to control arm fasteners: 25 Upper control arm cross-shaft end cap bolts: 35-40 Upper control arm cross-shaft to frame: Lower control arm cross-shaft end cap bolts: 45-55 Lower control arm rear cross-shaft to frame: Lower control arm front cross-shaft to frame: Idler arm to frame: 25, Lower 50 Main Half-shafts connect the differential to the rear wheels. (If you are using steel shims, this is not a problem.) Depending on your driving style and the type of shock installed, expect to get 15,000 to 30,000 miles on a new set. Make sure the spring is properly seated in the control arm so it does not slip. Shown here are a front lower control arm (front) and a rear trailing arm (back). Original-equipment spring rates usually give the best ride if your only intent is cruising with your restored Corvette. Clip off the excess ends with a pair of cutting pliers. 80 Farmers Branch, TX 75234. in/lbs, Drive Spindle Nut 100 (+ to Align Cotter Pin) Lift the trailing arm from the rear and place a 1 x 1-inch piece of wood into the same place that the shims go. These parts reduce the unsprung weight of your front suspension and are just as strong as the stamped-steel factory parts. Check belt tightness and check for a bent or loose pulley. Install the spindle dust shield gasket onto the spindle. Confirm the drag or load on the pinion by using an inch pound torque wrench. Drain Plug Once the spring is securely in both wells, slowly raise the jack to prevent the spring from popping out of the upper and lower spring wells. Manifolds Place the limited slip unit in the differential housing. Housing Cover 42: Install the rotors and calipers and tighten the wheel bearings as per the instructions in the shop manual. 90 Recheck the side yoke endplay. Shop 1968-1982 C3 Corvette Suspension Control Arm at Top Flight Automotive. Our inventory selection includes new pitman arms and slotted hex nuts, along with pitman arm to steering box nuts with washers to fulfill your Corvette restoration needs. 65, Wheel Nuts These two methods are well described and documented in the service . The final piece is a shim that determines the side yoke measurement. Ford used this Bendix-design "power-assist" steering design on a wide variety of vehicles ranging from the humble Falcon to the behemoth Lincoln. GM torque specs for the pitman arm nut is 120-160 ft-lb.2. Install the rear brake rotor over the hub and check it for runout to verify that the rotor and bearings are within factory tolerances. Make sure to keep the jack in place securely under the lower control arm. If you are not replacing the caliper, you can make a hook out of mechanical wire (or a coat hanger) and let the caliper and hose hang from the frame. You can also kick it with your shoe to push it into its deep well. 30, Pressure Plate Bolts 35 The strut rods attach to the differential bracket with an adjustable camber bolt with two reducing washers inside the bushing on the differential side only. 03: We are going to remove the entire steering linkage as one unit. The control arms, spindles and springs should now be in place. Zora was exactly what Corvette neededhe was very European, a trained engineer, and passionate about sports cars. You use shims to make it match the desired pattern. Now with all of the parts, tools and manuals in hand, lets get started1963-1982 Corvette Front Suspension Rebuild: 01: Here are all of the components that Zip supplied for the front suspension rebuild: Springs, power steering pump, ram, valve, hoses, idler arm, drag link, tie rods, sleeves, control arm bushings, bumpers, stabilizer bar bushings, end kits, shocks, and all of the mounting hardware kits. 41: Re-pack the front wheel bearings and install them into each rotor along with the grease seals. 25 Heads Recheck the adjustment after putting 100 miles on the car. 63-82 Corvette Power Steering Renew Kits (valve, ram , hoses), 63-68 Corvette Power Steering Relay Rod (drag link), 69-82 Corvette Power Steering Relay Rod (drag link), How to Rebuild 1965-1982 Corvette Rear Trailing Arm & Wheel Bearings, 1963-1982 Corvette Control Arm Bushings and Ball Joint. Pan to Crank Case Torque to specs. Remove the wheel, caliper and rotor. Use two 1/2-inch bolts and two 1/2-inch nuts to secure the rubber bump stop to the lower control arm. 05: Remove the power steering ram retaining nut from the mounting bracket. Oil :crazy: It says the lower ball joint nut should be at 70-95 lb-ft with a max of 125 when the slot is lined up for the cotter pin. Clutch The weight and type of engine (small- or big-block) largely determines the spring rate of the particular car. Let's get started. 19:Install a 3/8-242 1/4 cap screw in one end of the shaft. The clutch plate stack should set in and therefore be ready for service once the differential is installed in the car. *All work requires an appointment. When this is done, the sway bar can be removed. The control valve screws onto the end of the draglink. Each outer end of the spring is connected to the rear of the trailing arm with a link. Shot peen the rear trailing arm until all the paint and grime have been removed. Our inventory selection includes new pitman arms and slotted hex nuts, along with pitman . We're installing a new idler arm from Lonestar Caliper. You won't even need one quart of power steering fluid to fill the system. Once they are snug go one quarter of a turn more. The lower shaft is installed in the same manner although you will have to make another longer control arm support. Torque these bolts to 70 ft-lbs with a 5/8-inch socket. Big-block half shafts from 1968 to 1974 use 9/16 x 14 x 33164-inch bolts and heavy-duty caps. 29: Start the re-assembly by installing the lower control arms first, then install the upper control arms and shims and torque the mounting bolts and nuts to specs on both control arms. 65 Front Mounting Bolt 65, Ball Joint Attachment Nut It is easier to install the lower adjuster and the spring first on the workbench. Refurbished trailing arms include new bearings as part of the price. If there is excessive play, add shims to eliminate it. Use a torque wrench to secure the box with 9/16-inch bolts and torque to 30 ft-lbs. Then unbolt the top of the lower ball joint and drill, cut or grind off the rivets to remove the ball joint. 22: Coat the bushings and the shaft ends with white lithium grease. Lower the car and turn wheels right and left on the ground. Three basic types of Saginaw power steering pumps were used in C2 and C3 Corvettes. Tighten the nuts evenly on both sides. These control arms come ready for installation. Intake ft. and install cotter pin. 150 Oil 15, Upper Shock Mount Bolt Note: C4 - FRONT Bushing Clamp Bolts. Corvette engine front accessory drive packages were revised over time as vehicle design changed. The steering linkage must be assembled to the pitman arm, idler arm, and to the steering arms using the correct fasteners and assembly torques. Slowly raise the jack making sure the spring stays seated in the control arm. The second way is to do it in the car but you must remove the pitman arm and take torque measurements by placing a torque wrench on the steering wheel hub and measuring steering gear torque through the steering column. Now that the frame has been returned to your work area, reconfirm your factory frame measurements. Refer to the Chevrolet Shop Manual or other authorized manuals for the correct assembly and torque information. Do not stand in front of the spring. 30, Bracket to Carrier This is the perfect time to install refurbished or rebuilt components. 6 watching. The upper control arms are used to adjust the cars front suspension caster and camber settings. 50, Lower Shaft to Wheel Spidle Install a cotter key through the hole and bend the two wires back to prevent the nut from coming loose (as you did on the lower ball joint). 20, Joint to Upper Arm The upper and lower control arms secure the coil spring. This spring is under a lot of tension and might require the use of sandbags to be placed on the frame to help attach these end links.
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