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04-30-2011, 09:12 PM
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#1 |
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Registered User
Join Date: Mar 2004
Location: Hoytsville, Utah
Posts: 3,365
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Which posi is this?
I decided to pop the cover off my diff today. I thought this truck had a posi, but I wanted to make sure:
  Man, when I pulled the cover off, I thought someone had filled it up with tar! It was some mean looking goop in there. Should I try to rinse it out with something? I have heard it's best to use special posi oil-does anyone know what that is? Thanks
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'68 Panel Project Boogie Chillin' '68 C-10 Ol' Green |
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04-30-2011, 10:42 PM
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#2 |
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Has more rust than truck...
Join Date: Apr 2005
Location: Ivanhoe, MN
Posts: 2,421
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Re: Which posi is this?
Eaton clutch type posi. Its what came factory in these trucks. Spray/wipe it out with brake cleaner, fill with lube and the posi additive.
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05-01-2011, 11:59 AM
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#3 | |
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Registered User
Join Date: Mar 2004
Location: Hoytsville, Utah
Posts: 3,365
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Re: Which posi is this?
Quote:
Thanks for the Eaton info, BTW. 
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'68 Panel Project Boogie Chillin' '68 C-10 Ol' Green |
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05-01-2011, 04:12 PM
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#4 |
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My Carbon Footprint
Join Date: Oct 2008
Location: Orygun
Posts: 5,527
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Re: Which posi is this?
For what ever it's worth, if you ever wanted to be positive what your gear ratio is, it will be on the edge of the ring gear and the last numbers. Divide the little number into the big.
Last edited by prostreetC-10; 05-01-2011 at 04:14 PM. |
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05-01-2011, 08:29 PM
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#5 |
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Registered User
Join Date: Mar 2004
Location: Hoytsville, Utah
Posts: 3,365
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Re: Which posi is this?
Yeah-I was going to do that very thing as soon as get it cleaned up a little. It was kind of a sideways step, pulling the cover off. I could have taken this truck for it's maiden trip around the block today if I hadn't. Now I need to get a gasket and some gear lube tomorrow when I get down to the big city. I think I'm gonna fill it with clean gear lube and put some miles on and then drain that and re-fill with the posi-lube and more new gear lube.
Thanks.
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'68 Panel Project Boogie Chillin' '68 C-10 Ol' Green |
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05-01-2011, 08:53 PM
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#6 |
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18 Till I Die
Join Date: Mar 2005
Location: Alberta, Canada
Posts: 1,522
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Re: Which posi is this?
I would drive it for a couple months and change it again.
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2011 GMC Acadia 1969 GMC BBC LS7 2007 GMC Crew Duramax 1987 Camaro Iroc 350 Tuned Port Injection 42000Km 1987 Chevrolet Silverado 350 TBI 1987 Chevrolet Silverado 350 TBI(yes 2) Take me drunk, I'm too home... 
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05-03-2011, 09:05 PM
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#7 | |
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Registered User
Join Date: Mar 2004
Location: Hoytsville, Utah
Posts: 3,365
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Re: Which posi is this?
Quote:
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'68 Panel Project Boogie Chillin' '68 C-10 Ol' Green |
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05-03-2011, 11:09 PM
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#8 |
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Registered User
Join Date: Jan 2011
Location: Redmond, OR
Posts: 763
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Re: Which posi is this?
Hmm, I didn't think Eaton's went that high. I thought 4.56 was as high as they went.
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68 Chev C20- son has it now 83 K20 - bought from son 70 C20 - in progress |
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05-04-2011, 12:23 AM
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#9 | |
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My Carbon Footprint
Join Date: Oct 2008
Location: Orygun
Posts: 5,527
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Re: Which posi is this?
Quote:
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05-04-2011, 08:26 AM
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#10 |
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Senior Member
Join Date: Jan 2003
Location: daytonabeach
Posts: 22,956
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Re: Which posi is this?
a better choice on lube is synthetic. the good stuff like royal purple does not need and posi additives either
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71c-10 350/2004r/4:11 lowered3/4 longbed/dead by hurricane MEANING OF DEATH::::: SOMEBODY ELSE GETS YOUR STUFF DONT BELIEVE EVERYTHING YOU THINK TAKE MY ADVISE;I DON'T USE IT ANYWAY |
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05-04-2011, 12:44 PM
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#11 | |
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Registered User
Join Date: Jan 2011
Location: Prescott AZ
Posts: 112
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Re: Which posi is this?
Quote:
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05-04-2011, 09:50 PM
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#12 | |
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Registered User
Join Date: Mar 2004
Location: Hoytsville, Utah
Posts: 3,365
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Re: Which posi is this?
Quote:
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'68 Panel Project Boogie Chillin' '68 C-10 Ol' Green |
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05-04-2011, 10:02 PM
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#13 | |
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#16876
Join Date: Apr 2005
Location: Auburn WA
Posts: 12,266
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Re: Which posi is this?
Quote:
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Posted via Stationary Device '71 Custom Deluxe C-20 402. '67 Buick Special 455. '49 Plymouth Special Deluxe. "I love that old car smell"  Some people are like Slinkies... not really good for anything, but they still bring a smile to your face when you push them down a flight of stairs. |
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