Billet Specialties 10420 Alternator Bracket User Manual
Billet Specialties For the car
For use with:
• Chevy small block
• Short water pump
• GM 60 to 80 amp alternators
1. Use Loctite® removable threadlocker 242 (blue) on all fasteners.
2. Bolt alternator bracket [A] to drivers side head using bolts [E] 3/8-
16 x 2” SHCS and [F] 3/8-16 x 1-1/4” SHCS. Tighten.
3. Bolt alternator to bracket [A] using bolt [G] 3/8-16 x 3” SHCS. Be
sure to position alternator pivot bracket [C] between back of
alternator and rear ear of alternator bracket, shim if necessary*.
Do not fully tighten.
4. Bolt picot bracket threaded bushing [D] to alternator pivot
bracket using bolt [H] ¼-20 x ¾” FHCS.
5. Bolt alternator adjustment arm [B] to alternator using bolt [J]
5/16-18 x 1” BHCS and to threaded busing using bolt [I] ¼-20 x ¾”
FHCS. Tighten.
6. Bolt alternator adjustment arm [B] to lower ear on bracket [A]
using bolt [K] 3/8-16 x 1-1/4” SHCS and load washer [W]. Do not
fully tighten.
7. Install alternator belt on rear groove when using 2-groove
pulleys.
8. Apply tension on alternator belt and tighten bolts [G] 3/8-16 x 3”
SHCS and [K] 3/8-16 x 1-1/4” SHCS.
*Shims are provided to shim alternator to bracket for a tight fit.
Alternator mounting boss may vary due to polishing or plating.
#10420 Alternator Bracket Mount Instructions
Side Mount - Driver Side
BILL OF MATERIALS
ITEM QTY.
DESCRIPTION
SIZE
A
1
Alternator Main Bracket
B
1
Alternator Adjustment Arm
C
1
Alternator Pivot Bracket
D
1
Adjustment Arm To Pivot Bracket
Threaded Bushing
E
1
3/8”-16 Socket Head Cap Screw
2”
F
1
3/8”-16 Socket Head Cap Screw
1-1/4”
G
1
3/8”-16 Socket Head Cap Screw
3”
H
1
1/4”-20 Flat Head Cap Screw
3/4”
I
1
1/4”-20 Flat Head Cap Screw
3/4”
J
1
5/16”-18 Button Head Cap Screw
1”
K
1
3/8”-16 Socket Head Cap Screw
1-1/4”
W
1
Stainless Load Washer
3/4” X 3/16”
X
2
Stainless Flat Washer
3/4” X .060”
**
2
Stainless Flat Washer (Shims)
3/4” X .032”
**
2
Stainless Flat Washer (Shims)
3/4” X .010”
Billet Specialties • 500 Shawmut Avenue • La Grange, Illinois 60526• Tech 708-588-0505 • Fax 708-588-7181
A
F
E
G
I
K
W
C
B
X
J
H
D