Posi case2. Similar to a turnbuckle, there are right hand (RH) and left hand (LH) threaded connections at each end of the tie rod adjuster tube. Use a 24 or its equivalent to hold the upper control arm up out of the way as you install the rubber bumper. Four bolts with 9/16-inch heads fasten both strut rods. 21: To make the bushing installation easier, place all of the bushings in a freezer overnight. Gather all necessary parts that need to be installed onto the frame. Now that the frame has been returned to your work area, reconfirm your factory frame measurements. 80 JavaScript seems to be disabled in your browser. The old shaft protruded about 1/8" past the nut and the new one sticks out just a little past flush. Push the inner seal onto the spindle assembly. Product Details. The thickest shim in your clutch pack (.045 inch) is used to ensure that the bottom part of the seal does not bottom out, which causes leakage. (888) 581-3838. 30, Mount Bolts You will find the fit, finish and function will work superbly for your restoration. Pinion gears5. Is your Pitman arm on upside down by chance? C3 Corvette Forums. Rotate the Posi clutch pack unit (shown on a jig in step 4) until you have enough room to insert the washer. 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. Place the new coil spring into the lower control arm seat and frame bucket. Original-equipment spring rates usually give the best ride if your only intent is cruising with your restored Corvette. The shims will be installed later; do not put them in now. 35: Assemble the tie rods and sleeves. 25, Lower The bolts screw into this retainer and you must take extra care not to strip the threads when you secure the steel shaft to the frame. Now you have a special control arm support tool. Corvette, 1963 thru 1982 View More. The 3/4-inch inner camber bolt was torqued to 70 ft-lbs. The antiroll bar end is attached to the lower control arm with a link. Sometimes this sounds a lot easier than it actually is. Our performance and installation facility is open Monday-Friday from 8:30am-5:30pm (EST). The upper control arm bushings are now fitted with new rubber units. The spring should look like this when installed in its correct position. 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. The relay rod connects to tie rods on both ends, and those are attached to the steering knuckles. Place the frame on four safety stands that are sturdy and protected with pieces of cardboard. It is very important to understand the differences in these pumps and order the correct one for your application. 25 Bearing Cap Your completed front suspension should look like this unit, which is installed on a 1980 Corvette. Notice how the end of the coil spring rests in the lower control arm. If the hydraulic lines are not properly seated and tightened in the control valve and ram, they can leak. This includes the upper and lower control arms, steering knuckle with brake rotor, installed wheel bearings, and coil spring. Outer Now install the new pump, new hoses, and then tighten the belt to specs. Notice that these rotors have been matched to the spindle for trueness with White- Out. Specs. Dec . 30, Bracket to Torque Arm 165, Shock Absorber: Camshaft Sprocket 20 80 Then unbolt the top of the lower ball joint and drill, cut or grind off the rivets to remove the ball joint. (If you are using steel shims, this is not a problem.) Why tighten more?? Clip off the excess ends with a pair of cutting pliers. If you pull the pitman arm, it is sometimes possible to see the twist in the sector shaft splines. 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. Also, the distance between the box and pitman arm on the old box was 1/2" and the new setup is 5/8". C3 rear trailing arms are made from boxed steel and welded for strength. The other side connects to the bearing support leg and the shock mount is pushed through the legs and the strut rod. 43: Lube the entire front suspension ball joints, tie rods, idler arm, power steering control valve, etc. The bolts that you bagged and tagged when you removed this unit should be the correct size. It is much quicker to exchange your old trailing arm for a refurbished one. Shop 1968-1982 C3 Corvette Suspension Control Arm at Top Flight Automotive. They lock the clutches and provide power to both wheels. Small-blocks from 1968 to 1979 use two U-bolts on each side to attach the shaft to the differential, which are secured with 9/16-inch nuts. 1963-1982 Corvette Front and Rear Suspension Assembly. They are usually to 1 inch in circumference. Place a solid bar such as a damaged pin (shown) on the driveshaft yoke. 31: Install the spindle onto the lower control arm and tighten the nut. 02: Jack the front of the Corvette up and let the front suspension hang. Camber If you take two shims out of one side, for example, you must place the same number onto the other side. Input from the steering gear box actuates the hydraulic valve to make the cylinder act in the direction you chose. The trailing arm in this 1969 convertible is being removed so it can be overhauled by Van Steel. Visit our showroom to setup an appointment to have your Corvette tuned, accessorized, enhanced or more. In our case, we just need it to make the steering effort a little easier. Aftermarket suppliers offer a wide range of C3 Corvette shock absorbers. Refer to the Chevrolet Shop Manual or other authorized manuals for the correct assembly and torque information. Low Price Guarantee. (888) 581-3838 Phone (972) 243-3838 Fax (972) 243-3828 HOURS M-F 9am - 5pm Sat - by appt follow us on Facebook Instructions for Removing and Reinstalling 65-82 Corvette Rear Spindles The following Special Tools are all but REQUIRED to do a proper job: Spindle Knocker (spindle removal tool) Your friends can now exit the frame. Front Suspension: How To Rebuild Your 1963-1982 Corvette Front Suspension, Source:ZipCorvette Parts8067 Fast Lane | Mechanicsville, VA 23111 | (800) 962-9632, Your email address will not be published. Now tighten all of the nuts. Three bolts fasten the steering box to the left side of the frame. Once they are snug, go one-quarter turn more with a wrench. drag link (center link) - part #3740402 (See the part in the middleof Photo #12.) For autocross or track day events, set the shocks on the firmest setting as this provides the best handling. I figger it ain't going no wheres. This tool will seat the pulley onto the pump shaft. Four discs without tabs are on each side. Use a locking adhesive on the threads and torque each one to 60 ft-lbs. 60 Intake The anti-roll bar has not been installed and is the only missing part in this photo. Torque 65, Wheel Nuts Flywheel Organize and inventory your parts before starting the assembly process. When the ball joint stud threads are exposed, install and tighten the nut. I don't think it's upside down. Torque them to 30 ft-lbs. 12 20, Drain Plug Drop the end link into the opening at the rear of the trailing arm. As with any major rebuild, you will need more than average mechanical ability and some specialized tools along with factory shop, component and assembly line manuals. Torque to 25 lb. Verify that each bolt has been properly installed and torqued to specifications by marking them with White-Out. Pinion shaft3. This configuration is why the small piece of wood was placed in the trailing arm to keep the ride height closer to factory specs. High Quality Products. Corvette engine front accessory drive packages were revised over time as vehicle design changed. 65 These bump stops play a very important role in protecting the suspension in case you hit an unexpected bump too fast and the suspension bottoms out. Filed Under: C3 Corvette Restoration Guide, Chevy Tech Tips, The 700-R4 transmission first came into production in the early 1980s. 20, 3/8" Bolts - Housing Bolts (rear) 40, Front Bolt The third arm does the work of both an idler and pitman arm in a recirculating ball steering system. Any out-of-spec measurements cause an annoying vibration that can be felt throughout the vehicle. 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. Use a mallet to carefully tap the side bearings into the case. The springs push against the clutches with more force as the cars speed increases. 80 Oil Clutch plates10. 06: Disconnect the idler arm bracket from the passenger side of the frame and then use the tie rod separator to remove the control valve stud from the Pitman arm. These bolts should be torqued to 30 ft-lbs and the tabs on the French locks need to be bent (shown). The store will not work correctly in the case when cookies are disabled. I just did mine, and I busted a nut with my breaker bar to get it to 150 like you did, and it looks like that. These springs were installed on Corvettes built at the new Bowling Green assembly plant. Run the steering wheel lock to lock several times to bleed out air. These are fairly inexpensive and it is a good idea to install fresh bump stops when putting the front suspension together. 70, Oil Supporting the center of the dash is critical so as to not crack or damage it [Click here to read more], General Motors, like all the other car manufacturers of the time, did not put much valuable information on the vehicle identification number (VIN) plate. 67-69 Firebird/Camaro and 68-74 Nova, Skylark, Apollo, & Ventura Only Insert a cotter key in the provided hole. Increase engine speed to approximately 1500 rpm. C3 C4 C56 C56-A C59 C6 C66M-R CD4E Chrysler CIB5 Cruise-O-Matic . Fuel Lonestar Caliper Company offers a complete line of power steering parts, components, and systems for C2 and C3 Corvettes, including pulleys, power steering pump caps, power steering brackets and steering shaft couplings. Lonestar Caliper power steering pumps are not equipped with drive pulleys, which means you will need to use your existing pulley or order the right one for your application. 50 27: The power steering pump was badly leaking so we asked Zip to send us a brand new one. 14: Loosen and remove the lower control arm retaining bolts and remove the lower control arm and spindle. Make sure it sits evenly on the lip of the housing then use a hammer to gently tap the seal into place. 30 Count on Zip Corvette for the best quality Corvette Parts available for your 1968-1982 Corvette. Leave it alone. The lower control arm includes a steel shaft and is attached with two 7/16-20 x 1.-inch bolts at each end of the arm. Do not tighten the two bolts that secure the upper control arms rubber or poly bushings until the car is ready to be driven. 40 Ft-Lbs. 55 Tighten castle nut to 45 lb. 70. When they have separated, remove the ball joint nut and pull the control arm out of the spindle. THE RUGGED 40 SERIES TORQUE CONVERTER is composed of heavy gauge stamped steel to withstand the extreme rigors of rough applications. 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. This will ease installation. Part #: A2327 Line: PTQ 90 Clamp Make sure the guide pin on the spring aligns with the guide hole in the differential. 20, Joint to Upper Arm Depending on your driving style and the type of shock installed, expect to get 15,000 to 30,000 miles on a new set. Subtle changes were made to the rear frame to accommodate this new differential. This prevents them from loosening and backing out. Install and adjust the parking brake assembly prior to mounting the rear brake rotor. Replacement of this system is straightforward because Chevrolet made it so simple to service. Two U-shaped brackets that fit over two rubber bushings secure the antiroll bar to the frame. With the center of the spring secure, install the spring end links. They perform an important function. Cylinder 65, Spring Link Bolt to Torque Arm.- This is a good procedure to complete before taking the car to the alignment shop. Spray the flared mounting end with silicone to make installation easier. Install the nut and tighten it until the hub barely turns. in/lbs, Rear Spring to Carrier Housing Cover Rod Cap The seals tend to leak if they sit or have high mileage. The lower control arm has a deep well that supports the bottom of the front suspension coil spring. Zora was exactly what Corvette neededhe was very European, a trained engineer, and passionate about sports cars. Save my name, email, and website in this browser for the next time I comment. 50, Upper This won't happen if you pay strict attention to how the lines and hoses are routed and installed before taking the system apart. Slowly lower the jack to see if the upper and lower control arms securely hold the coil spring in place. These two methods are well described and documented in the service manual for your car. The fluid pressure reduces the effort it takes to turn the steering wheel. 4. Written by Walt Thurn and Posted with Permission of CarTechBooks. Tap it several times with a mallet or hammer to make sure it is seated properly on the pinion shaft. If you are refurbishing these trailing arms yourself it is wise to include new bearings. Apply silicone lubricant before installing the seal gear into the housing. 19:Install a 3/8-242 1/4 cap screw in one end of the shaft. Push the spring up into the upper control arm spring well in the frame. If you marked these parts during disassembly, re-torque the bolts to the same location. Be careful to not over tighten them, as it damages the roller bearings. Connecting Press out the bushing into the socket. Secure the lower shock with two 1/2-inch bolts and torque to 35 ft-lbs. Pump Cover Housing The rotor is now ready to be installed. Cam Bolt 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. 45: The last thing you will need to do is to check the toe-in of the front suspension. 15: The upper ball joint can be removed by using a drill bit, chisel or die grinder to remove the rivets. The idler arm provides support to the steering system and is connected to the passenger side of the frame. There's the 1963-'74 "long-neck" Saginaw pump, which is clearly different than the "canned-ham" 1975-'82 Saginaw pumps to follow. The long-neck pump has a keyed shaft and pulley versus the pressed-on pulleys used from 1975-'82. Repeat above procedure until oil level remains constant after running engine. 17-27, Steering Arm Nuts Once the spring has been secured, remove the jack. The Eaton system uses four coil springs, while the Dana utilizes a conical Belleview spring to preload the clutch pack. Once the bolt is attached with the nut and washer, slowly lower the jack. Dont be afraid to hit the heads forcibly because they are designed for this procedure. The lower shaft is installed in the same manner although you will have to make another longer control arm support. Change the power steering fluid whenever you change the transmission and rear axle lubrication, which should be roughly every 30,000 miles. 33: Mount the idler arm to the other end of the drag link. Lift them and spread the shoes to mount them on the upper pivot bolt. We now have a rolling chassis ready . Tolerances of .005 or less are the runout target. Attach the frame crosspiece to the differential with two 7/16-18 x 118-inch bolts and 7/16-inch lock washers. 12: Now remove the retaining bolts and take the upper control arms out. Place a long fl at bar onto the head of each bolt and hit the bar with enough force to push the head flush against the frame. Pump Driveshaft 03: We are going to remove the entire steering linkage as one unit. The 15/16-inch shock mount nut was torqued to 75 ft-lbs. 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. Plugs You have a thread showing. This bumper is designed to hit the lower frame rail if the suspension is fully compressed; this helps avoid damaging any suspension components if a bump is taken too hard. At the time, emissions standards were tightening and General Motors was hard-pressed to increase fuel economy across the board for their production vehicles. The differentials are basically all the same inside, but you find some minor changes during an overhaul. Install the screw and tighten to specs. You will see later why we did it this way. 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 Remove the races and seals and clean the trailing arm in a parts washer to remove the grease and grit. For the best experience on our site, be sure to turn on Javascript in your browser. I call it a refresh. You will notice that there are both right and left hand threads on the tie rods. Install the ring gear onto the Posi unit with new Grade 8 bolts and lock washers. The clutch plate stack should set in and therefore be ready for service once the differential is installed in the car. Shaft to Wheel Spidle Yellow or white dye (or marking compound) is usually found in a differential kit. Invert the control arm and repeat the process on the other bushing. The measurement should be .006 to .008 inch. . 07: After the Pitman arm has been separated from the control valve, the whole steering linkage will fall to the floor in one unit. You are now ready to remove the dash assembly. 30, Bracket to Carrier They provided a better ride and reduced the unsprung weight of the rear suspension. It is much easier to install the strut rod with the trailing arm in this position. Also check the oil for any metal fragments, which tell you a gear tooth might be chipped or broken. Congratulations! Adjusting the backlash is the best way to eliminate gear noise. 24: When installing the shafts in the lower control arms, make sure that the two mounting holes in the shaft are on the same end as the stabilizer bar end link mount. Cover Bolts Torque specifications for 68-82 Corvettes FT/LBS (Unless specified) Front Suspension: Rear Axle: Front Wheel Bearings 12 Differential Cover Bolts 50 Upper Ball Joint Nut 70 Driveshaft to Pinion Flange 15 Lower Ball Joint Nut 90 Differential Front Mounting Bolt 65 Ball Joint Attachment Nut 28 Steering Arm to Spindle 70 Brake System: Use engine assembly lube to perform this task. (You can also use a large punch or another piece of solid metal.) C2 Corvette Pitman Arm & Relay Rod (1963-1967) Books & Manuals Home 63-67 C2 Corvette Parts Steering Systems Steering Linkage Pitman Arm & Relay Rod 17 Items Show per page Sort By 1/2-20 Slotted Hex Nut Price: $1.99 SKU: BL-212 Add to Cart 53-62 Steering Drag Link & 63-76 Relay Rod End Plug Price: $8.99 SKU: SC-533 Add to Cart We're installing a new idler arm from Lonestar Caliper. ft. and install cotter pin. 30, Camber Cam Nut Remove the parking brake hardware (reverse the procedure that starts in Step 3). Install pinch bolt being certain that it aligns properly with the machined slot in the relay rod. The suspension must have time to settle on the springs before these bolts are tightened. Third-generation Corvettes use a series of rods attached to the steering box and the suspension steering knuckles to turn the wheels. Come join the discussion about restorations, builds, performance, modifications, classifieds, troubleshooting, maintenance, and more! Be careful not to overtighten, as it will damage the roller bearings. Use two 11/1616 x 7/8-inch bolts to attach the front caliper bracket and dust shield to the knuckle. Torque to specs. Check belt tightness and check for a bent or loose pulley. Fax (972) 243-3828. Assemble the spring plate and put it into a vise. Start by installing the control valve onto the end of the drag link. Dont forget to do this; its important. (Van Steel uses a special fixture to press the spindle out of the bearing support.) 70, Rear That way when the linkage is installed, the front end alignment will be close enough for you to be able to drive to your local Corvette alignment shop without doing any damage to the front end or tires. With the C3 rear suspension design, the differential is mounted to the center of the frame and two halfshafts connect to the rear wheels. The front wheels should have a toe-in of 1/8 to 3/8 of an inch. You can adjust the strut rods to change the rear suspension camber setting on your Corvette. The upper and lower control arms should look like this once they have been installed. (See Photo #16A.) Both are now ready to be installed into the frame. Install the rear brake rotor over the hub and check it for runout to verify that the rotor and bearings are within factory tolerances. Then cut approximately a 1 slot into the pipe. 32: Now we can start assembling the steering linkage. If it is not properly seated use a pipe wrench to rotate the spring into the correct position. Use a hammer to strike the pickle fork to knock the trailing arm away from the bearing support. It should not bind after installation. He was quickly promoted to [Click here to read more], It was much easier to stockpile Muncie spare parts and cores in the 1970s than it is today. A small retainer at the front of the lower frame holds both front lower control arm bolts in place. 35 Caliper Exhaust When all of the pressure is off the spring, pull the control arm down as far as it will go and remove the coil spring. Torque these bolts to 35 ft-lbs. 65, Auto The rear transverse leaf spring and spring bolts have not been installed. Profile. 18, Bracket Bolts Then balance the valve. The large gray carpet remnant makes the reassembly process more comfortable and dropped parts are more easily found. This simple but effective design is very robust and gives long, trouble-free service when maintained properly. Use a long pry bar or long screwdriver to push the lower part of the spring into the lower spring well. Place the frame in a low-traffic and well-lit area so it can be safely reassembled. Recheck the side yoke endplay. The fourth VIN digit [Click here to read more], HOW TO RESTORE YOUR C3 CORVETTE: 1968-1982, Basic Engine Modifications to Improve C5 Corvette Performance (Part 7), 74 Final Assembly Steps of Your Big-Block Chevy Engine Rebuild, How to Rebuild Your GM Transmission: TH400 Transbrake Guide, Comparing Cylinder Blocks and Fasteners for Chevy Small Block Engines, Chevy Big-Block Performance: Lubrication System Guide, How to Replace the Rocker Panel on a 67-72 Chevy Truck, How to Rebuild Chevy and GM Axles: Step-by-Step, How to Build a Chevy Street Stock Engine for Circle Track Racing, Small-Block Chevy Dyno Tests: Cams & Valvetrain Performance, History of GM Automatic Overdrive Transmissions, How to Source Chevy Big-Block Cylinder Heads, Oil and Lubrication Systems Guide for Big-Block Chevy Engines, 1955-1996 Chevy Small-Block Performance Guide: Camshafts Manual (Part 5), The Ultimate Chevy Big-Block Parts Resource, How to Produce More Power in Your Chevy Small Block Engine, C5 Corvette Brake Upgrades to Improve Performance (Part 5), How to Remove the Dash from a 70-72 Chevelle, C2 Corvette Restoration by the Numbers: What to Look For. 37: Mount the entire steering linkage assembly to the steering arms and Pitman arm. Two people may be required to reinstall the rear steel spring. The relay rod also connects to the idler arm (far right). Place the limited slip unit in the differential housing. If the threads engage the entire nut and you torqued to spec, you're good to go. 60, Upper 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. 480 In-Lbs. Axle The 19681982 Corvettes use a steel coil spring in the front suspension. 45 Lower the car and turn wheels right and left on the ground. Make sure the spring is properly seated in the control arm so it does not slip. specifications for 68-82 Corvettes, Front Wheel Bearings 80, Mount Bolts Teeth marks on the Posi- Traction case indicate that the bearings are worn and the pinion gear is hitting the case. The control arm has a dimple stamped into it and the end of the bottom coil must rest next to this dimple. Ford used this Bendix-design "power-assist" steering design on a wide variety of vehicles ranging from the humble Falcon to the behemoth Lincoln. Remove the wheel, caliper and rotor. Also install the gas tank at this time. This can be corrected with proper adjustment at the control valve via an adjustment screw with the engine running and both front tires off the ground. The transverse leaf spring bolts to the differential and is connected to the rear suspension trailing arms. The standard front coil spring is rated at 474 pounds. Gary 69 vert 350 M20-373's 72 coupe 350,TH400,336's. Reply . The 19801982 automatics use 12-mm x 1.75 x 10.9 x 35-mm bolts and 19801981 4-speeds use 12-mm x 1.75 x 10.9 x 80-mm bolts. 38: The front shocks can now be re-installed. Use an adjustable micrometer to verify the thickness of any shim before installing it. Filter Bypass Valve The C3 rear suspension was an engineering breakthrough when introduced in 1963 on the C2. The ram (shown) is attached to the relay rod. Filter Use a large piece of pipe or something that is the same diameter as the seal. dental chair won t go down,
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