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03-16-2010, 11:08 PM
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#1 |
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Registered User
Join Date: Mar 2010
Location: brandon, ms
Posts: 385
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gear ratio
I have a 1960 apache does anyone know the rear end gear ratio?
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03-17-2010, 12:18 AM
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#2 |
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60-66 Nut
  Join Date: Mar 2007
Location: Coeur d'Alene, Idaho
Posts: 23,250
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Re: gear ratio
The most common ratio in the '60-'62's that I've found is 3.90's
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03-17-2010, 09:44 AM
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#3 |
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1962 C-10
Join Date: Apr 2005
Location: Las Vegas, New Mexico
Posts: 4,978
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Re: gear ratio
I think two choices were 3.38's and 3.90's. The latter being the more common. I've seen 3.38's on a factory automatic '62 with a 283 and a glide.
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Joseph Chavez  "See the USA in a Chevrolet!!" ......................_____ .........________//__{\_____ ,,,,,,,/__(O)___//___/__(O)_/ 1962 C10 Shortbed Fleetside 327/th350 GV overdrive 1974 C10 Longbed Fleetside 350/th350 "The Trash Truck" 1999 Chevy 2500 OBS, Longbed 5.7/4L80E 4x4 2015 GMC Sierra SLE 1500 4x4 |
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03-17-2010, 10:57 AM
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#4 |
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Account Suspended
Join Date: Sep 2009
Location: High Plains of Colorado
Posts: 2,485
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Re: gear ratio
To check rear end ratio jack up one tire if you have an open diff, or both tires if you have a working posi or locking differential. Rotate the tire one full revolution for posis and lockers and 2 full revolutions for open diffs. Carefully count the number of full revolutions the driveshaft makes. This is your gear ratio. In other words, if the drive shaft turns 3 ¾ turns, you probably have a 3.73 gear ratio. Turning the tire for twice the number of full revolutions and dividing the drive shaft revolutions by two will give you a more accurate reading.
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03-18-2010, 12:23 AM
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#5 |
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Registered User
Join Date: Jan 2010
Location: San Jose, CA
Posts: 124
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Re: gear ratio
Have you checked the back of your seat for the build sheet? That's how I found out what my 65 had.
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03-18-2010, 01:52 AM
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#6 |
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Senior Member
Join Date: Aug 2009
Location: San Leandro, Ca 94577
Posts: 854
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Re: gear ratio
my 62 had 4.11 when I removed it
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03-18-2010, 04:43 AM
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#7 |
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"Where were you in '62?"
Join Date: Jul 2004
Location: Cleveland County, North Cackalacky
Posts: 5,013
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Re: gear ratio
1960-1966 Chevy/GMC Pickup Truck Specs & Engine/Trans/Axle ID's
http://67-72chevytrucks.com/vboard/s...d.php?t=327764 
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