A pinion is a smaller gear inside a larger gear that drives a 90-degree angle in a differential drive. Each pinion has a torque specification. The following is an extensive list of torque specifications for pinion-bearing preload setups on different truck manufacturers, all in inch-pounds.
New:
AMC MODEL 20: 14-19
AMC MODEL 35: 12-15
Used:
AMC MODEL 20: 6-8
AMC MODEL 35: 6-7
New:
OLDS/PONT D/O: 14-19
63-79 CORVETTE: 14-19
55 CHEVY: 14-18
7.2": 11-14
7.5": 12-15
7.75": 12-15
8.2": 12-15
8.2" OLDS/PONT: 12-15
8.5" IFS: 14-19
8.5": 14-19
9.5": 15-22
12" PASSENGER: 14-19
12" TRUCK: 13-15
14" TRUCK: 20-35
12-1/4": PRESET
Used:
OLDS/PONT D/O: 6-7
63-79 CORVETTE: 6-8
55 CHEVY: 6-8
7.2": 6-7
7.5": 6-7
7.75": 6-7
8.2": 6-7
8.2" OLDS/PONT: 6-7
8.5" IFS: 6-8
8.5": 6-8
9.5": 7-9
12" PASSENGER: 6-8
12" TRUCK: 6-7
14" TRUCK: 8-11
New:
7-1/4": 2-14
8-1/4": 12-15
8-3/4" '41': 13-15
8-3/4" '42': 15-25
8-3/4" '89': 14-19
9-1/4": 14-19
Used:
7-1/4": 6-7
8-1/4": 6-8
8-3/4" '41': 6-8
8-3/4" '42': 7-10
8-3/4" '89': 6-9
9-1/4": 6-9
New:
DANA 25: 12-15
DANA 27: 12-15
DANA 28: 15-25
DANA 30: 10-30
DANA 35: 15-25
DANA 44: 10-30
DANA 50: 14-19
DANA 60,61,70U: 10-30
DANA 70 & 70HD: 10-30
DANA 80: 25-40
Used:
DANA 25: 6-7
DANA 27: 6-7
DANA 28: 7-12
DANA 30: 5-15
DANA 35: 7-12
DANA 44: 5-15
DANA 50: 6-9
DANA 60,61,70U: 5-15
DANA 70 & 70HD: 5-15
DANA 80: 9-11
New:
7.5": 16-28
8.0": 12-14
8.7": 14-19
8.8": 16-29
9" OEM R&P: 22-32
9" NON OEM: 22-32
9" DAYTONA: 14-16
9-3/8": 14-16
10-1/4": 20-35
Used:
7.5": 8-14
8.0": 6-7
8.7": 6-8
8.8": 8-14
9" OEM R&P: 8-14
9" NON OEM: 8-14
9" DAYTONA: 6-8
9-3/8": 6-8
10-1/4": 6-8
New:
PASSENGER: 11-13
TRUCK w/o V6: 12-15
TRUCK: V6: 14-17
Used:
PASSENGER: 5-6
TRUCK w/o V6: 5-6
TRUCK: V6: 5-6
