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11-23-2009, 08:47 PM
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#1 |
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Registered User
Join Date: Nov 2009
Location: Fuquay Varina NC
Posts: 4
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Posi Help
I have a 12-bolt with 3.73 gears. I'm looking for some recommendations on a posi unit that I can use. I'm new to this so any help would be greatly appreciated.
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11-23-2009, 08:53 PM
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#2 |
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Senior Member
Join Date: Jul 2001
Location: Muskegon,MI,USA
Posts: 6,026
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Re: Posi Help
Welcome to the 67-72 Chevy Truck Board from West michigan!
The trucks were equipped originally with Eaton posi's but others will work. Here is a link to check out the Eaton posi's on. Jim http://www.tomsdifferentials.com/tomp.htm
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1971 Shortbox step side 4x4, 350 sbc, 3:07 rear end 1965 Impala SS 400 sbc, Muncie rock crusher 1966 Impala SS 396 bbc, TH 400 1969 El Camino, 350 sbc, TH 350 1971 Snowplow built on a Blazer frame 1972 GMC Short bed, stepside, TH 400, 427 BBC |
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11-23-2009, 09:32 PM
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#3 |
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Registered User
Join Date: Dec 2007
Location: Santa Maria, Ca.
Posts: 1,423
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Re: Posi Help
I have been looking at the Powertrax by Richmond gear and I think I'm going to buy one for my 4x4 http://www.jegs.com/p/Powertrax/Powe...44476/10002/-1
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69 Chevy 4x4 383 Power 
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11-23-2009, 10:11 PM
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#4 |
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Sisyphus was my mentor!
 
Join Date: Sep 2002
Location: Carleton Place, Ontario CANADA
Posts: 984
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Re: Posi Help
I'm in this hobby for the long haul & I believe in rebuildable parts if possible. The Eaton unit is rebuildable while some others are not. Food for thought...
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passthebuck  #5642 -TWO 1967 GMC 910's. One with L6/3-on-the tree and the other with 355 w/435hp & a 700r4. -a 2013 Honda Civic as my "sensible" car |
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11-23-2009, 10:22 PM
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#5 |
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Registered User
Join Date: May 2007
Location: Rapid City South Dakota
Posts: 2,359
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Re: Posi Help
The cheapest route would be to find a used eaton, put in some new clutches, and install.
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Turp Mcspray New life for an old 2wd, farm blazer http://67-72chevytrucks.com/vboard/s...d.php?t=505987 My Blazer build http://67-72chevytrucks.com/vboard/s...d.php?t=342299 |
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11-24-2009, 11:01 PM
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#6 |
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70 Chevrolet=Obsession
Join Date: Jun 2009
Location: nice ca
Posts: 1,067
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Re: Posi Help
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I'm Just like my truck. Old, Ugly and Grouchy. Except my truck starts easily in the morning and doesn't smoke! IT'S NOT EASY BEING GREEN! -Kermit the frog 1970 Chevrolet C-10 Longbed Stepside : 350, Muncie M20, 3.08 GM corp. positraction Forest green exterior/light green interior(Where all my money goes) 1996 Toyota Corolla (Parts runner) |
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11-25-2009, 03:01 AM
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#7 |
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Registered User
Join Date: Apr 2009
Location: MI
Posts: 88
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Re: Posi Help
I put a POWERTRAX in my buddys jeep and it was an easy install, no respacing the carrier. But it is a locking diff with overrun ability, so it can make a little noise. It is not like a posi, but it will leave 2 even patches or get you out of a mud hole. If its a street driver and not a lot of hole shots I would go for the eaton.
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68 C-10 Panel (fixing) 250-6,3ott 93 k1500 pickup DD "When a man is old enough to figure out his dad was right, he has a son who thinks he's wrong" Charles Wadsworth |
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11-25-2009, 08:46 AM
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#8 |
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Registered User
Join Date: Oct 2009
Location: Townville,Pa
Posts: 284
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Re: Posi Help
I have the Richmond Power Trax in both of my trucks. You know it will work when you need it but they are noisy. I know what it is and kinda like it.But the snapping and clunking bothers the wife when we pull into a cruise in and have to cut it sharp. This is the `70 C20 with a Dana 60. I pull a 24 ft camper with it so I like the added fail safe traction.
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