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Billet Specialties 10421 Compressor Bracket User Manual

Billet Specialties For the car

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For use with:

• Chevy small block

• Short water pump

• Sanden 508 AC compressor

1. Use Loctite® removable threadlocker 242 (blue) on all fasteners.

2. Bolt compressor bracket [A] to passenger side head using bolt [C]

3/8-16 x 1-1/4” SHCS and bolt [D] 3/8-16 x 2” SHCS. Tighten.

3. Reinstall bracket [A] and shim between bracket [A] and head at

bolt location [C] 3/8-16 x 1-1/4” SHCS to compensate for casting
variances. Tighten bolt [C] and [D].

4. Bolt compressor adjustment arm [B] to bracket [A] using bolt [E] 3/8-

16 x 1-1/4” SHCS and load washer. Do not tighten.

5. Bolt Sanden 508 compressor to bracket [A] and [B] using bolt [F] 3/8-

16 x 1-3/4” SHCS and [G] 3/8-16 x 1-1/4” SHCS, do not tighten. Bolt
compressor to bracket [B] using bolt [H] 3/8-16 x 1” SHCS, tighten.

6. Install compressor belt on front groove when using 2-groove pulleys.

7. Apply tension on compressor belt and tighten bolts [E] 3/8-16 x 1-1/4”

SHCS, [F] 3/8-16 x 1-3/4” SHCS, and [G] 3/8-16 x 1-1/4” SHCS.

Optional: For early heads (Pre 1987) with only 1 drilled and tapped

hole on passenger side head. Bolt bracket A to head using bolt
[D] 3/8-16 x 2” SHCS while aligning top of bracket parallel to valve
cover gasket surface. Spot drill head at bolt position [C] using
a 25/64” drill bit to provide adequate start for tap drill. Remove
bracket [A] and drill head using a 5/16” drill bit to a depth of ¾”.
Tap head with a 3/8-16 tap to provide at least 5/8” of thread.

#10421 Compressor Bracket Mount Instructions

Side Mount - Passenger Side

BILL OF MATERIALS

ITEM QTY.

DESCRIPTION

SIZE

A

Copressor Main Bracket

B

Compressor Adjustment Arm

C

3/8”-16 Socket Head Cap Screw

1-1/4”

D

3/8”-16 Socket Head Cap Screw

2”

E

3/8”-16 Socket Head Cap Screw
with 3/4” Load Washer

1-1/4”

F

3/8”-16 Socket Head Cap Screw
with Stainless Flat Washer

1-3/4”

G

3/8”-16 Socket Head Cap Screw
with Stainless Flat Washer

1-1/4”

H

3/8”-16 Socket Head Cap Screw
with Stainless Flat Washer

1”

Billet Specialties • 500 Shawmut Avenue • La Grange, Illinois 60526• Tech 708-588-0505 • Fax 708-588-7181

SANDEN 508

AC COMPRESSOR

H

B

F

G

E

D

A

C

Backside of compressor