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12-28-2023, 10:39 PM
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#1 |
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Registered User
Join Date: Aug 2022
Location: winneconne, wisco
Posts: 55
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1962 gmc c20 rear gear ratio???
v6 with speed, dana 60, any ideas on rear gear? no tag....
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12-29-2023, 12:15 AM
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#2 |
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Senior Member
 
Join Date: Dec 2009
Location: TN.
Posts: 8,429
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Re: 1962 gmc c20 rear gear ratio???
__________________
________________________________________________________________________________________ ____________________________________________ 84 Chevy K-20 63 Impala (my high school car) http://67-72chevytrucks.com/vboard/s...Crew Cab Build |
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12-29-2023, 12:30 AM
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#3 |
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Senior Member
  
Join Date: Jan 2018
Location: Hickory Flat, GA
Posts: 4,491
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Re: 1962 gmc c20 rear gear ratio???
Put one piece of tape on the inside of one tire. Line up with an easily recognizable spot (or another piece of tape on the ground or inner fender. Put one piece of tape on your pinion yoke. Again, line up with an easily recognizable spot. I did mine with the pinion yoke mark pointed straight down to the ground.
Open Diff: Make two full rotations of the tire, count how many revolutions you have on the pinion yoke. Only lift one tire off the ground to do this. Posi Diff: Make one full rotation of the tire, count how many revolutions you have on the pinion yoke. Need both tires off the ground.
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Christian Carpenter 1963 C10 - Frankentruck 283, Muncie 3 speed with overdrive Overdrive wiring here1963-ish truck bed trailer - Half-Wit 1981 C10 - Penny 305, th350 --> Soon to be 350, Saginaw 4 speed 1995 Dodge Dakota Sport "I'll put it simple: if you're going hard enough left, you'll find yourself turning right." - Doc Hudson |
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12-30-2023, 10:09 PM
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#4 |
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Registered User
Join Date: Feb 2007
Location: west coast
Posts: 3,396
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Re: 1962 gmc c20 rear gear ratio???
4.10 would have been standard on a GMC V6. 4.57 would have been standard on a Chevy.
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01-07-2024, 05:18 PM
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#5 |
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Registered User
Join Date: Aug 2022
Location: winneconne, wisco
Posts: 55
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Re: 1962 gmc c20 rear gear ratio???
thanks all yall!
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01-07-2024, 07:35 PM
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#6 |
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Senior Member
Join Date: Dec 2009
Location: TN.
Posts: 8,429
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Re: 1962 gmc c20 rear gear ratio???
So,?
Did you find out what Ratio you have? And how did you go about it? Inquiring minds want to know. 
__________________
________________________________________________________________________________________ ____________________________________________ 84 Chevy K-20 63 Impala (my high school car) http://67-72chevytrucks.com/vboard/s...Crew Cab Build |
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01-09-2024, 12:35 PM
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#7 | |
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Registered User
Join Date: Aug 2022
Location: winneconne, wisco
Posts: 55
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Re: 1962 gmc c20 rear gear ratio???
Quote:
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