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10-07-2009, 08:00 AM | #1 |
Registered User
Join Date: Feb 2008
Location: blanchard, ok
Posts: 30
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Need help picking a posi
I picked up a 12 bolt rear the other day that I'm going to drop 3.73 gears into. I also want a posi, but I know what to get. My '84 is my daily driver that is also taken to the track. What's a good posi to drop in it? What are you guys runnin?
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10-08-2009, 03:06 PM | #2 |
Senior Member
Join Date: Jan 2009
Location: Austin, TX
Posts: 1,079
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Re: Need help picking a posi
I'm runnin' an open differential and in need of a posi (and gears) too......subscribed
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-- Josh Instagram: @americanmusc1e OLD SKOOL-- 1970 C10. 454/Th400/3.07 posi Build Thread FARM TRUCK----1949 Chevrolet 3800 Power Wagon Hauler Build Thread 1999 4wd OBS Tahoe - daily. DM me if you can't see photos i posted |
10-08-2009, 03:06 PM | #3 |
Hay Team!!
Join Date: Jun 2003
Location: Ft. Worth, TX, USA
Posts: 366
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Re: Need help picking a posi
I have an Auburn in mine.....it has held up very well. I shattered the rear in my truck launching on the bottle almost 2 years ago and that is the only part I did not have to replace. Still going strong..
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1972 Chevrolet Cheyenne LWB "Orange and White" 8) |
10-08-2009, 07:05 PM | #4 |
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Join Date: Jan 2003
Location: Atlantic City, NJ
Posts: 1,073
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Re: Need help picking a posi
I've had both Eaton and Auburn and prefer the Eaton. Eaton is rebuildable and hooks straighter.
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86 SWB 9.0 LITER T-400-OD 4.11 eaton-4/5 drop Best 1/4 12.51 @112mph no traction |
10-08-2009, 08:37 PM | #5 |
motor exploder
Join Date: Mar 2009
Location: Pittsburgh, PA
Posts: 2,346
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Re: Need help picking a posi
I put an Auburn in my a DD '92 C1500 5.7/5 spd that I took to the track every now and then. I liked it because it was smooth and didn't make any noise. I had 3.73's, Lakewood traction bars and a 4" rear drop and it hooked pretty good.
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Adam 1969 Chevy CST/10 stepside, DART Big M/TREMEC Magnum Extreme/3.73's w/Detroit Truetrac 1965 Chevy Bel Air Wagon (daily driver), 327/TH350,10 bolt w/3.08's 1961 Chevy Bel Air Sport Coupe, ZZ454/M21/9" rear w/3.50's & Detroit Truetrac 2005 GMC 1500 ccsb 2wd, 6.0L/4L65e/3.73 G80 2006 GMC 2500HD ccsb 4x4, DMax LBZ/Allison 6spd/4.56's w/Detroit TrueTrac Use the SEARCH function on this forum - it is your friend!! |
10-08-2009, 09:29 PM | #6 |
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Join Date: Feb 2008
Location: blanchard, ok
Posts: 30
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Re: Need help picking a posi
I appreciate the input. How about gears? I heard Richmonds whine and break a lot. I was told Motive gears are the way to go.
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10-08-2009, 10:25 PM | #7 |
motor exploder
Join Date: Mar 2009
Location: Pittsburgh, PA
Posts: 2,346
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Re: Need help picking a posi
i used Yukon gears in my '92 when I put in the Auburn. they were quiet too, and I never had any problems out of them either. I've never used Motive or Richmond.
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Adam 1969 Chevy CST/10 stepside, DART Big M/TREMEC Magnum Extreme/3.73's w/Detroit Truetrac 1965 Chevy Bel Air Wagon (daily driver), 327/TH350,10 bolt w/3.08's 1961 Chevy Bel Air Sport Coupe, ZZ454/M21/9" rear w/3.50's & Detroit Truetrac 2005 GMC 1500 ccsb 2wd, 6.0L/4L65e/3.73 G80 2006 GMC 2500HD ccsb 4x4, DMax LBZ/Allison 6spd/4.56's w/Detroit TrueTrac Use the SEARCH function on this forum - it is your friend!! |
10-08-2009, 10:40 PM | #8 |
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Join Date: Sep 2008
Location: Huntingdon,TN
Posts: 95
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Re: Need help picking a posi
If set up properly, gears should not whine regardless of manufacterer.
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10-09-2009, 12:03 AM | #9 |
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Join Date: Apr 2007
Location: salina, kansas
Posts: 123
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Re: Need help picking a posi
couldnt agree more... and i run richmond's in my 8 second malibu.... nver had a problem.
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1968 swb RIP 408. 388 roller monster mouse, richmond 5 speed. and alot of the stuff that makes you happy. build link. http://67-72chevytrucks.com/vboard/s...d.php?t=389826
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10-09-2009, 01:17 PM | #10 | |
Registered Truck Offender
Join Date: May 2008
Location: hells training ground (aka Ariz)
Posts: 3,118
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Re: Need help picking a posi
Quote:
I did break a set of Richmond street gears transbrake launching in the 3380 pound truck running low 12's, but have never had a seconds issue with the Richmond 9" Pro gear run in my low 9second Nova. I don't know if it's design or case flex but I have heard of more gears breaking in the GM 12bolt housing than the other popular differential cases (Dane & 9" ).
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Still playin with trucks, even at my age! When you're dead, it's only a problem for the people around you, because you don't know you're dead. .....It's kinda the same when your STUPID. I just did my taxes and reviewed my SS statement. Thanks to the current administration it looks like I will only have to work till noon on the day of my funeral. |
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10-21-2009, 01:43 AM | #11 |
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Join Date: Dec 2008
Location: dallas, texas
Posts: 90
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Re: Need help picking a posi
call peyton performance out of texas he builds rear ends for all of the big boys in the south he will shoot you straight
I have an auburn in mine. hope this helps |
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