Wilwood D8-4 Caliper Rear User Manual
Caliper highlights
4700 Calle Bolero
•
Camarillo, CA 93012
•
www.wilwood.com
•
Sales: (805) 388-1188
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E-mail Tech Assistance:
213 REV DATE: 06-14-12
FORGED BILLET ALUMINUM D8
CORVETTE REPLACEMENT CALIPERS*
*Wheel clearance issues exist with the OE 1965-66 steel 15 x 5.50” wheels and some alloy replicas including K-H style knock-off wheels. Due to variations in
the production tolerance on all wheels, calipers, and caliper mounting brackets, always check for wheel clearance during installation. Should interference exist,
use a minimum thickness wheel spacer to provide adequate clearance.
Caliper Highlights:
D8 calipers are a direct bolt-on replacement for the factory original
calipers on all 1965-82 Chevrolet Corvettes. Forged billet aluminum
bodies, stainless steel pistons, and competition style high-temperature
seals put an end to the rust, bore pitting, and seal failures that plague
the OE cast iron caliper design. D8 calipers provide low-maintenance
performance and reliability for the Sunday afternoon driver, with a huge
weight savings and high temperature durability for the tracks.
D8 calipers mount in the stock location over stock rotors, and use the
original type D8 brake pads. They fit snugly inside any 1967 and later year
production steel rally wheel, as well as most of the later year optional alloy wheels.
Other wheels, including the 1965-66 production steel 5.50” wide “JK” production code
wheels and some aftermarket alloy replica wheels, will require a 3/16” or thicker wheel spacer for
clearance. The piston volumes of the
and
have both been matched to the original caliper piston
volumes to maintain the original front to rear brake bias and full compatibility with the output of the OE master cylinder.
Only the flex lines that connect the caliper to the hard line fittings on the chassis need to be replaced to install the D8-4 on
any car.
D8 forged billet aluminum caliper bodies are the product of Wilwood’s in-house FEA design and 3-D modeling technology. With its unyielding
strength and superior piston design, the D8-4 and D8-6 calipers generate positive pedal response and high clamping efficiency with a
substantial weight savings over the OE calipers. As compared to the individual weight of 13.2 pounds each for the OE calipers, a full set of
D8-4 calipers reduces unsprung suspension weight by 29 pounds.
Every D8 caliper is assembled with stainless steel pistons for corrosion resistance and to delay the heat transfer from the pad into the caliper
body, fluid and seals. The aluminum body itself provides cooler running temperatures through faster heat dissipation. Cooler operating
temperatures translate into longer service life for road or track. For extreme and sustained high temperature competition, D8 calipers can also
be custom built with Wilwood’s exclusive Thermlock pistons for the ultimate in thermal protection and reliability. To round out the package, the
calipers are fitted with our stainless steel SRS bridge wear plates to dampen noise and prevent excessive wear from pad gouging at the
caliper bridge.
D8 calipers can be run with any OE replacement pad, or optimized for street or track with one of
Three caliper finishes, including clear anodized on the base model, and optional gloss red or black powder coat are available to match the
personal preference and style for all types of applications.
D8-4 FRONT CALIPER ORDERING INFORMATION:
D8-4 REAR CALIPER ORDERING INFORMATION:
CLEAR ANODIZED BLACK RED
BORE SIZE
DISC WIDTH
PART NUMBER
PART NUMBER
PART NUMBER
1.88” 47,8 mm
1.25”
31,8 mm
D8-6 FRONT CALIPER ORDERING INFORMATION:
CLEAR ANODIZED BLACK RED
BORE SIZE
DISC WIDTH
P/N (R/L)
P/N (R/L)
P/N (R/L)
1.88/1.38/1.25”
1.25”
31,8 mm
CLEAR ANODIZED BLACK RED
BORE SIZE
DISC WIDTH
PART NUMBER
PART NUMBER
PART NUMBER
1.38” 35,1 mm
1.25”
31,8 mm
D8-4 Front Caliper Shown in
Black Powder Coat Finish