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Old 11-10-2004, 07:25 PM   #1
bigfaulknwally
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question rear end ratio

does anyone know what rear end gear ratio typicaly is used on a 6 cylinder truck?
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Old 11-10-2004, 07:52 PM   #2
Super Duck
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gears

typicly the 6 trucks had 342s or 373s. it is easy to check, by counting teath and dividing
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Old 11-10-2004, 08:16 PM   #3
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thanks i am being lazy i dont want to pull the cover cause the truck is still driveable.
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Old 11-10-2004, 08:17 PM   #4
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mine had 411's from the factory , now a 373 much quieter when on the highway.
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Old 11-10-2004, 09:20 PM   #5
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Stingray

I love the 72 sting ray. I have a 63
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67' Chev swb step side
69' SS elky
03' Chev ext cab 4X4

hey who lernt me to spell

is there anything else?
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Old 11-10-2004, 09:29 PM   #6
Longhorn Man
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the 3.42 would be in later trucks, never stock in a 67 - 72.
3.73 is the norm in an inline truck.
You oughta think aboiut draining the diff anf refilling it. How old do you think that oil is? 20yrs...older?
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Old 11-10-2004, 09:41 PM   #7
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gears

good call. I just got back into these trucks. so how much is cheep to a good home?
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67' Chev swb step side
69' SS elky
03' Chev ext cab 4X4

hey who lernt me to spell

is there anything else?
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Old 11-11-2004, 12:20 AM   #8
Longhorn Man
its all about the +6 inches
 
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look here ---> http://207.44.196.117/vboard/showthread.php3?t=125771
it is all but spoken for...I'm just waiting on confirmation.
It isn't worth taking across the country.
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Old 11-11-2004, 02:27 AM   #9
bigfaulknwally
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yeah the oil is probably 20 years old.
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Old 11-11-2004, 02:53 AM   #10
whitesswj
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what about on a stock v8 truck w/ a 327?
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Old 11-11-2004, 03:49 AM   #11
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i didnt see if this had been mentioned or not...but if the truck is a 67-72 3/4 ton, then it will have 4.56/4.57 gears standard.
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Old 11-11-2004, 08:20 AM   #12
GMC AMI
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Answer posted on the faq section on how to determine ratio.
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