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Old 07-24-2007, 04:05 PM   #1
drivethechevy
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307 rear posi? or not?

i have a 69 c/10 and it is listed in the glove box to have a 307 gear ratio
i have never seen this truck drive as it was pushed onto the trailer and rolled off into my shop
so how can i tell if it is a posi without hooking it up to a running drivetrain?
i can get the #'s off it if that will help in my quest for posi
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1971 chevy k10 custom deluxe
http://67-72chevytrucks.com/vboard/s...d.php?t=341257
1968 chevy k/10 fleet
http://67-72chevytrucks.com/vboard/s...d.php?t=334731
1948 desoto custom coupe fluid drive(family heirloom)
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Old 07-24-2007, 04:17 PM   #2
1969k10stepside
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Re: 307 rear posi? or not?

Pull the cover and take a look.Then you can tell if its posi or not.Or pull the cover and post a pic so we can tell you.
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Old 07-24-2007, 04:25 PM   #3
Mt Man Chad
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Re: 307 rear posi? or not?

Spin one hub and if the both turn the same way it should be a posi unit.
If they spin opposite it's a non-posi.
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68 CST SWB - Gold/White 50th anniversary /TH350/Buddy Buckets/3.73 Posi/dogdish caps.
68 K10 Burb - Gold/White 327/SM465/NP205/3.73 "Daa Burb" build thread
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Old 07-24-2007, 05:02 PM   #4
drivethechevy
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Re: 307 rear posi? or not?

i tried spining the hubs earlier in the tear down and nothing happend with the other wheel
i have a pic of the rearend with the cover off and i am working on figuring out how to get it on here
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Trial and Error, its expensive but its a mistake i most likely wont make again

1971 chevy k10 custom deluxe
http://67-72chevytrucks.com/vboard/s...d.php?t=341257
1968 chevy k/10 fleet
http://67-72chevytrucks.com/vboard/s...d.php?t=334731
1948 desoto custom coupe fluid drive(family heirloom)
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Old 07-24-2007, 05:13 PM   #5
Mt Man Chad
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Re: 307 rear posi? or not?

If it has a spring pack (clutch in the middle) its a posi, it would look like this.
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68 CST SWB - Gold/White 50th anniversary /TH350/Buddy Buckets/3.73 Posi/dogdish caps.
68 K10 Burb - Gold/White 327/SM465/NP205/3.73 "Daa Burb" build thread

Last edited by Mt Man Chad; 07-24-2007 at 05:15 PM.
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Old 07-24-2007, 05:22 PM   #6
drivethechevy
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Re: 307 rear posi? or not?

thanks
its not a posi then
__________________
Trial and Error, its expensive but its a mistake i most likely wont make again

1971 chevy k10 custom deluxe
http://67-72chevytrucks.com/vboard/s...d.php?t=341257
1968 chevy k/10 fleet
http://67-72chevytrucks.com/vboard/s...d.php?t=334731
1948 desoto custom coupe fluid drive(family heirloom)
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