Wilwood Forged Narrow Superlite 4R Big Brake Rear Brake Kit For OE Parking Brake - Manual (Page 3)

General Information and Disassembly Instructions
Parts List
•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 hubs.
•Verify your wheel clearance using Figure 2.
•Verify that the factory axle and stud pattern matches the stud hole pattern in the
hats supplied with this kit. Axles that have been modified with different size studs
or lug patterns may require modifications to the hat that must be performed by a
qualified machinist.
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. Remove the two bolts from the backside of the upright that
holds the stock caliper mounting bracket and lift off the bracket and stock caliper
as one unit. You may have to unbolt the stock caliper from the caliper bracket
before removal. Then slide off the rotor.
•Clean, de-grease and remove all nicks or burrs on the upright assembly.
CENTER
LINE OF
WHEEL
.50 (12,7)
RADIUS .04 (1,0)
3.60 (91,4)
4.94
(125,5)
7.92
(201,2)
.14
(3,6)
CALIPER
WILWOOD ROTOR
WHEEL MOUNT SURFACE
NOTE: A MINIMUM OF .080” CLEARANCE MUST BE MAINTAINED
BETWEEN THE WHEEL AND CALIPER IN ALL AREAS
1.10 (27,9) ROTOR THICKNESS
2.81 (71,3)
CENTER REGISTRATION
Figure 2. Wheel Clearance Diagram
1
2
3
4
5
6
6A
7
8
9
10
11
12
13
14
15
16
2
4
4
16
4
2
2
2
24
24
2
4
4
4
16
4
1
250-10629
230-10425
240-11101
240-1848
240-3902
160-8402/03
160-8400/01-BK
170-10621
240-11240
230-6738
120-11782-BK
230-9183
240-10190
230-9079
240-1159
300-7392
150-8855K Bracket, Caliper Mounting
Bolt, 7/16-20 x 1.50 Long, Hex Head
Washer, 453 I.D. x .750 O.D. x .063 Thick
Shim, .441 I.D. x 1.003 O.D. x .030 Thick
Shim, .441 I.D. x 1.003 O.D. x .016 Thick
Rotor, GT - 1.10” X 14.90” Dia, 12 x 8.75” Bolt Circle (one each, right and left)
Rotor, SRP Drilled and Slotted (one each, right and left)
Hat, 5 x 4.75, 1.98 Offset, 12 x 8.75 Bolt Circle
Washer, .265 I.D. x .500 O.D. x .063 Thick
Bolt, 1/4-28 x .750 Long, 12 Point
Caliper, Superlite 4R, (one each, right and left)
Nut, 3/8-24, Self-Locking, 12 Point
Washer, .391 I.D. x .625 O.D. x .063 Thick
Stud, 3/8-16 x 3/8-24 x 3.15 long (pre-installed in bracket)
Shim, .035 Thick
Spacer, .573 Long
Pad, BP-10 Compound, Axle Set
ITEM NO. PART NO. DESCRIPTION QTY
NOTES:
Part Number 230-8217 Rotor Bolt Kit, includes part numbers 230-6738 and 240-11240
Part Number 230-10630, Spindle Bracket Mounting Bolt Kit, Includes P/N 230-10425, 240-1848, 240-3902 and 240-11101
Part Number 250-10634 Caliper Bracket Mounting Bolt Kit, includes P/N 230-9079, 230-9183, 240-1159, 240-10190, 250-10629 & 300-7392
Item 6A is an optional item and is included with the “-”D” kits. Add “-D” to end of part number when ordering
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