10 BOLT COVER 12 Bolt RING GEAR 8.875 OR 8.75


12 bolt Eaton Housing assembly 10 bolt cover  Yoke velocity coupler 71-85

Ring Gear Diameter 8.875 (1965 -1976) 8.75 (1977-1985)
Casting number(s)  
Ring Gear  12
Cover Bolts  10
Ring Gear Bolt Size  7/16 Left Hand Thread
Axle Spline

28 (77-85 only) and 31 spline c-clip & Bolt in axles

SOME 73-77 A-BODY WERE 28 OR 31 C-CLIP AXLES TOO.
Pinion Spline 30 constant velocity joint coupler or Mechanics 3R U-Joint (A-body)
Pinion Diameter 1.875 (1965-1976) 1.625 (1977-1985)
Axle Shaft Diameter 1.531 1.563 (65-70) (71-76)
 1.40 (A-body HD 73-77 and 77-85 B-body)

 

Supported Cars

Car Year
Electra / Rivera 65-76 5" bolt pattern (non 455 CID)
Monte Carlo / Regal /
Grand Prix / Malibu (rare)
73-77 4 3/4 bolt pattern
Impala / Caprice / Wagon 71-85 5" bolt pattern
Cadillac 71-76 5" bolt pattern
Bonneville, Executive 65-76 5” bolt pattern
Grandville 71-76 5" bolt pattern
Olds 98 / 88 65-76 5" bolt pattern (non 455 CID)

 

Rebuild Kit

Part Part Number
Carrier Bearing LM603049
Carrier Bearing (Race) LM603012
OUTER Pinion Bearing M88048
OUTER Pinion Bearing (Race) M88010
INNER Pinion Bearing 77-85 73-77 HD A-BODY M802048
INNER Pinion Bearing M804049
INNER Pinion Bearing (Race) 77-85 73-77 HD A-BODY M802011
INNER Pinion Bearing (RACE) M804010
Pinion Seal 2043

 

Mega Axle Bearing Kit

Part Part Number
Axle Bearing (C-Clip) 6408
Axle Seal (c-clip) 8835S
Axle Bearing A10 / Set10
Axle seal 2689S