Owner's manual
•Installation of this kit should ONLY be performed by
individuals experienced in the installation and proper
operation of disc brake systems. Prior to any attempt
to install this kit, please check the following to ensure
a trouble free installation.
•Inspect the contents of this kit against the parts list to
ensure that all components and hardware are
included.
•Make sure this is the correct kit to fit the exact make
and model year of your axle. This kit is designed for
direct bolt-on installation to 1965 through 1982 model
year Chevrolet Corvette.
•Verify your wheel clearance using Figure 2.
Disassembly
•Disassemble the original equipment rear brakes:
Raise the rear wheels off the ground and support the
rear suspension according to the vehicle
manufacturer’s instructions.
•Remove the wheel. From the inside of the caliper,
remove the two caliper mounting bolts, then remove
the caliper.
Assembly Instructions
(numbers in parenthesis refer
to the parts list/diagram on the preceding page):
CAUTION: All mounting bolts must fully engage
threaded holes.
•Place the Wilwood D8 caliper (1) in the exact position as the original caliper. Secure the caliper to the OEM mounting bracket by sliding
bolt (3) through two washers (4), as shown in Figure 1, using red Loctite
®
271 on the bolt threads. Torque bolts (3) to 55 ft-lbs.
•Remove the caliper pad retaining pin from the caliper (1) by popping out the pin retaining clip and sliding out the pin. Slide the brake
pads (2) into place. They should install easily without interference. Reinstall the pad retainer pin and secure using the pin retaining
clip.
•NOTE: OEM rubber brake hoses cannot be adapted to Wilwood calipers. The caliper inlet fitting is a 1/8-27 NPT. The preferred method
is to use steel adapter fittings at the caliper, either straight, 45 or 90 degree and enough steel braided line to allow for full suspension
travel and turning radius, lock to lock. Carefully route lines to prevent contact with moving suspension, brake or wheel
components. Wilwood hose kits are designed for use in many different vehicle applications and it is the installer's responsibility to
properly route and ensure adequate clearance and retention for brake hose components. Wilwood’s hose kit, P/N 220-10632 is
included with this kit.
7.09
(180,1)
INSIDE WHEEL
PROFILE (MINIMUM
REQUIRED
FOR CLEARANCE)
.12 (3,0)
.60 (15,3)
STOCK WHEEL MOUNTING
SURFACE OFFSET
CENTER LINE
OF WHEEL
1.00 (25,4) RADIUS
WHEEL STUDS
CALIPER
EXISTING CALIPER
MOUNTING BRACKET
Figure 2. Wheel Clearance Diagram
General Information, Disassembly, and Assembly Instructions
Parts List
1
2
3
4
5
2
1
4
8
1
120-10526
150-10546K
230-10425
240-11101
220-10632
Caliper, D8-4
Pad, BP-10 Compound, Axle Set
Bolt, 7/16-20 x 1.50 Long, Hex Head
Washer, .453 I.D. x .750 O.D. x .063 Thick
Stainless Steel Flex Line Kit (not shown)
ITEM NO. PART NO. DESCRIPTION QTY
Page 3
NOTES:
Part Number 230-10889 Caliper Mounting Bolt Kit, includes part numbers 230-10425, 240-0139 and 240-9069