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Old 09-18-2011, 05:58 PM   #1
losthope
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exc. positraction??

i have a 1966 - c15 series truck since mines a long bed ,but the stamping on the axle tube says "HA" which on this page says it should be a c14 series(shortbed)? is the rearend maybe out of a shortbed? and what does (exc. positraction) mean??what does the "EXC." part stand for? and do i have posi???
[/QUOTE]
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Old 09-18-2011, 09:07 PM   #2
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Re: exc. positraction??

I think it means HA is 3.73 gears (except positraction) so it's the non-posi.
The 3.73 Posi would be the HF.
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Old 09-18-2011, 10:35 PM   #3
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Re: exc. positraction??

thats what i was thinking i was just hoping maybe i had one, ill know for sure when its drivable !! Now i know what to look for at pick-n-pull, thanks slowbuild
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1966 chevy c10 Build Thread:http://67-72chevytrucks.com/vboard/s...d.php?t=485977

1954 ford customline
H.A.M.B 54 Build Thread:http://www.jalopyjournal.com/forum/s...d.php?t=622142
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Old 09-19-2011, 09:33 AM   #4
63sbssbbw
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Re: exc. positraction??

I read it as HC and HG for the posi units ??
The only difference I could fathom between long and short box rears would be at
the trailing arm mounts,where the pinion angle would be set differently.??
As for IDing the posi.
With wheels off the ground,rotate one wheel,if the other follows suit(same direction)
it's a posi.
if it rotates the opposite direction it's a limited slip
T
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Old 09-19-2011, 09:36 AM   #5
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Re: exc. positraction??

If you spin one rear wheel by hand, and the other one spins the same direction, you have a posi (or something seriously wrong).
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Old 09-19-2011, 09:59 AM   #6
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Re: exc. positraction??

Quote:
Originally Posted by Str8axle View Post
If you spin one rear wheel by hand, and the other one spins the same direction, you have a posi (or something seriously wrong).
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that's certainly a possibility too Ray
and hopefully accompanied by unpleasant noises
T
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