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#1 |
Registered User
Join Date: Jul 2005
Location: SK, Canada
Posts: 488
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Help buying posi unit.
I need some help figuring out which model I need from Moser. I need to specify spline and carrier.
http://www.moserengineering.com/Page...eatonposi.html I've got a 12 bolt rear diff and according to their website the 12 bolt truck rear diffs only came with 30 spline. Is that accurate? I did the "spin the tire and count the revolutions of the drive shaft" test and got 17 in 10 which I think means [(17*0.1)*2]=3.4. According to the Moser sight again, the ratios from 2.76 to 3.42 use the 3 series carrier. That should mean I need a 3 series carrier and 30 spline unit. Am I right?
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Evan B. Last edited by evan; 10-27-2007 at 10:34 PM. |
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#2 | |
Registered User
Join Date: Feb 2006
Location: Cleveland, TN
Posts: 440
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Re: Help buying posi unit.
Quote:
www.randyringandpinion.com They know their stuff.
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1981 Custom Deeluxe SWB 5.3/4L60e 3.73 and Auburn. Mustang Dyno 265hp/258tq |
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#3 | |
Registered User
Join Date: Jul 2005
Location: SK, Canada
Posts: 488
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Re: Help buying posi unit.
Quote:
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Evan B. |
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#4 |
Registered User
Join Date: Feb 2006
Location: Cleveland, TN
Posts: 440
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Re: Help buying posi unit.
__________________
1981 Custom Deeluxe SWB 5.3/4L60e 3.73 and Auburn. Mustang Dyno 265hp/258tq |
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#5 | |
Registered User
Join Date: Jul 2005
Location: SK, Canada
Posts: 488
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Re: Help buying posi unit.
Quote:
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Evan B. |
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#6 |
www.73-87chevytrucks.com
![]() Join Date: Dec 1999
Location: Birmingham, AL
Posts: 6,935
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Re: Help buying posi unit.
12bolts had 30 spline axles. Make sure you get the truck version.
I deal with Randys Ring and Pinion also.
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Chris Lucas 1973 Chevy C-10 1978 GMC Jimmy (2WD) - SOLD 1987 R10 twin turbo LS 1991 R3500 SRW CrewCab 1985 K5 diesel swapped project 1989 K5 2WD conversion w/ Vette susp Project Captkaos Customs 73-87chevytrucks.com |
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#7 |
67 Chevy Stepside
Join Date: Mar 2007
Location: Jonesville NC
Posts: 836
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Re: Help buying posi unit.
i would buy a lock-right locker. i love my
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1967 Chevy stepside 1976 BIG DOOLEY 454 turbo 400 4:11 |
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#8 |
STILL PLAYS WITH TRUX
Join Date: Nov 2002
Location: Melbourne, Fla.
Posts: 2,764
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Here's what im running in my truck there's no set up required just install it and haul @ss!
You can run allmost any gear set and you can get them from Jegs or Summit. There made by Richmond Gear. I'v had mine about 10 yr's and i love it, and no problems at all only maintenance is if you change your rear end oil also no special friction additives are required. Heres a exploded view of it. |
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#9 |
Senior Member
Join Date: Jan 2005
Location: New Orleans
Posts: 1,365
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Re: Help buying posi unit.
![]() I agree with Bigblock and 87 stepper. That is what I have, love it. No more one tire fryer. |
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#10 | |
Registered User
Join Date: Sep 2006
Location: League City, Texas
Posts: 732
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Re: Help buying posi unit.
Quote:
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#11 |
STILL PLAYS WITH TRUX
Join Date: Nov 2002
Location: Melbourne, Fla.
Posts: 2,764
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It does make some faint ratcheting noise when you make turns but i only hear it when im going real slow and the radio is low.
But that is normal for this set up. |
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#12 |
Registered User
Join Date: Oct 2007
Location: Edmonton, Alberta
Posts: 26
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Re: Help buying posi unit.
Don't mean to thread jack but i have some stock 3.73 gears from my 01 Silverado and I'm wondering if they'd fit in my 83 sierra? Theyre both 10 bolt.
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#13 |
Registered User
Join Date: Feb 2006
Location: Cleveland, TN
Posts: 440
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Re: Help buying posi unit.
I do not think it will work. I could be wrong
__________________
1981 Custom Deeluxe SWB 5.3/4L60e 3.73 and Auburn. Mustang Dyno 265hp/258tq |
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#14 |
67 Chevy Stepside
Join Date: Mar 2007
Location: Jonesville NC
Posts: 836
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Re: Help buying posi unit.
Powertrax makes the lock right locker
__________________
1967 Chevy stepside 1976 BIG DOOLEY 454 turbo 400 4:11 |
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#15 |
Registered User
Join Date: Jul 2005
Location: SK, Canada
Posts: 488
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Re: Help buying posi unit.
You have the Lock-Right Locker? They also make the one that 87 Stepper showed the picture of.
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Evan B. |
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#16 |
67 Chevy Stepside
Join Date: Mar 2007
Location: Jonesville NC
Posts: 836
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Re: Help buying posi unit.
__________________
1967 Chevy stepside 1976 BIG DOOLEY 454 turbo 400 4:11 |
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#17 |
67 Chevy Stepside
Join Date: Mar 2007
Location: Jonesville NC
Posts: 836
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Re: Help buying posi unit.
__________________
1967 Chevy stepside 1976 BIG DOOLEY 454 turbo 400 4:11 |
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#18 |
Registered User
Join Date: Jul 2005
Location: SK, Canada
Posts: 488
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Re: Help buying posi unit.
Could you guys clarify which model you're using? I checked http://www.powertrax.com and there is a difference between the one Stepper showed the diagram of (Powertrax Traction System) and the one bigblock79 was referring to (Lock-Right Locker). I'm wondering if it's worth it to pay the higher pricetag for the Powertrax.
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Evan B. Last edited by evan; 11-20-2007 at 10:27 PM. |
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