in/lbs, Lower If it doesnt, adjust the nut until the opening is located. The fluid pressure reduces the effort it takes to turn the steering wheel. This saves a lot of time during the reassembly process when trying to locate the next part to install onto the frame. Transmissions | O'Reilly Auto Parts 30, Leaf Spring Anchor Plate Use two 11/1616 x 7/8-inch bolts to attach the front caliper bracket and dust shield to the knuckle. 45, Main Bearing Cap Exhaust 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. Rest the spring on a floor jack and raise it to the differential to attach it with the steel plate and four 13/16- inch bolts. 120 Drain Plug Only because there aren't any threads protruding past the nut and the arm is further from the box than it was on my old box. A 9/16x18x2532-inch bolt secures the rear lower control arm to the frame. These parts reduce the unsprung weight of your front suspension and are just as strong as the stamped-steel factory parts. The store will not work correctly in the case when cookies are disabled. Tighten the nut when the rubber has been slightly compressed on the shock shaft. Big-block half shafts from 1968 to 1974 use 9/16 x 14 x 33164-inch bolts and heavy-duty caps. The C3 rear suspension was an engineering breakthrough when introduced in 1963 on the C2. in/lbs, Stabilizer Bar Link nuts The antiroll bar end is attached to the lower control arm with a link. If your rotors are new and out of spec, return them to the vendor for a refund. 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. 30, Strut Rod to Spindle Support 75 (+ to Align Cotter Pin) in/lbs, Carrier to Frame 14: Loosen and remove the lower control arm retaining bolts and remove the lower control arm and spindle. When Zora Duntov unveiled the independent rear suspension of the 1963 Corvette, he elevated the American sports car to a world class level. 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. It is not necessary to return the same unit to your car. 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: If you removed the calipers from the brake hoses, you will need to bleed the front brakes. We Mounted tires to make this job easier. (outer) After you have installed the first bushing, install the cross shaft into the arm. L-82 Use a mallet to carefully tap the side bearings into the case. 50, Manual Feed the shock through the bottom of the lower control arm and insert the top of the shaft into the opening on the frame. Also check the oil for any metal fragments, which tell you a gear tooth might be chipped or broken. The 19681982 Corvettes use a steel coil spring in the front suspension. The standard front coil spring is rated at 474 pounds. 23: Place the control arm in the press and install one bushing using a 1 5/16 socket to press the bushing into place. Three basic types of Saginaw power steering pumps were used in C2 and C3 Corvettes. Flywheel Ford used this Bendix-design "power-assist" steering design on a wide variety of vehicles ranging from the humble Falcon to the behemoth Lincoln. One bolt holds these arms in place. Increase engine speed to approximately 1500 rpm. 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. 18: To remove the control arm bushings, start by removing the end cap bolts, lock washers and collars. This bracket is attached to the lower control arm on each side of the front suspension. About 18-inch pounds is common for this step. Inlet 22: Coat the bushings and the shaft ends with white lithium grease. Apply silicone lubricant before installing the seal gear into the housing. Now you will have to support the inside of the control arm to keep it from collapsing. Click the button below and we will send you an exclusive deal on this book. The best place to start is with the shim that came out when it was disassembled. Step 20 20: BALANCING THE CONTROL VALVE: The control valve must be adjusted after being dissembled as outlined in the following procedure: Balancing Instructions For autocross or track day events, set the shocks on the firmest setting as this provides the best handling. This is a good time to refurbish or replace the steel control arms. 15 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. These control arms come ready for installation. Place the frame in a low-traffic and well-lit area so it can be safely reassembled. Pan Drain Plug 12: Now remove the retaining bolts and take the upper control arms out. Pan to Crank Case A belt drives the power steering pump. This illustration shows some but not all of the major parts in a Posi-Traction unit.1. Pinion lock screw and washer4. These rubber bushing are strong enough to absorb the impact under most conditions. 20, Joint to Upper Arm Torque these bolts to 100 ft-lbs. Two hydraulic hoses connect to the ram and provide fluid pressure to make the unit operate. Everything is back in the truck awaiting torque. These two methods are well described and documented in the service manual for your car. Install the side pins with a spring cup and then install the upper spring. Put the dial indicator on zero; rock the ring gear back and forth to determine how much play it has while the pinion gear remains stationary. Tubular upper and lower aftermarket control arms are available from Corvette suppliers such as Van Steel. The 15/16-inch shock mount nut was torqued to 75 ft-lbs. The rear transverse leaf spring and spring bolts have not been installed. It's Worn C2/C3 Corvette Power Steering Replacement This car received a new steering knuckle, wheel bearings, and brake rotor. This puts the trailing arm in the correct ride height position and makes putting the half-shafts and strut rods into the car much easier. Torque these bolts to 70 ft-lbs with a 5/8-inch socket. 15, Lower Ball Joint Nut It also has the front and rear suspension and the differential. A professional can put the correct suspension settings back into your car. The installation procedure is the same for all front coil springs. 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. The lower control arm has a deep well that supports the bottom of the front suspension coil spring. The Eaton system uses four coil springs, while the Dana utilizes a conical Belleview spring to preload the clutch pack. 60 Our Corvette Parts & Accessories Catalogs have guided thousands of customers through detailed restorations, enhancements and performance modifications. Invert the arm in the press. Two U-shaped brackets that fit over two rubber bushings secure the antiroll bar to the frame. Two 9/16-inch nuts secure the links. Then its removed from the jig and turned around to repeat this process in the opposite direction. Sometimes this sounds a lot easier than it actually is. Once the bolt is attached with the nut and washer, slowly lower the jack. Thermostat Insert a pickle fork between the trailing arm and the bearing support legs. 480 In-Lbs. Zip Corvette sales and customer service representatives are here to serve you during the following hours: Our showroom is open to the public Monday-Friday from 8:30am-5:30pm (EST). Spark Posi case2. If your original differential is not making noise and does not show any evidence of abnormal wear, reinstall the old shims. Remember that the threaded end of the link kit must point up. Screw it on and line up the slot in the valve with the groove in the threads. A large-diameter steering wheel and skinny, pizza-cutter tires reduced steering effort, but not by much. 20, Differential Mount Bracket The most important change occurred in 1981 when the factory installed a composite rear leaf spring. Remember to buy springs in pairs because each manufacturer has slightly different production methods that affect spring rate and height. Recheck the side yoke endplay. 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. It is a little complex but works very well when adjusted correctly. Make sure the spring is properly seated in the control arm so it does not slip. 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. Pump 05: Remove the power steering ram retaining nut from the mounting bracket. You will see later why we did it this way. Intake This is an important area to reinspect before you start installing your parts because the crosspiece that runs under the engine is prone to bending. *All work requires an appointment. This job is easier if someone is helping. THE RUGGED 40 SERIES TORQUE CONVERTER is composed of heavy gauge stamped steel to withstand the extreme rigors of rough applications. Secure it with a hose clamp around the center and then tighten the clamp enough to compress the spring plate so you can slip it through the window (shown). Tighten the nuts evenly on both sides and make sure the lock washers are crushed. A couple of spacer plates are employed between the subframe and framerails. The large gray carpet remnant makes the reassembly process more comfortable and dropped parts are more easily found. Running the Pitman shaft adjustment screw all the way in will allow you to install the cap completely and then torque to spec. Other questions? 40, Shifter Levers to Shafts 28: The new pump came with a pulley installation tool. 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. Front Suspension torque specs | Chevy Corvette Forum Make sure to keep the jack in place securely under the lower control arm. If you use the original ring-and-pinion gear that was removed the fit does not require much adjustment. Insert a cotter key in the provided hole. performance and installation facility here, 63-82 Pitman Arm To Steering Box Nut w/Washer.
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