Posi Rear end - The 1947 - Present Chevrolet & GMC Truck Message Board Network

jugernot · 03-01-2004, 05:49 PM

I just got my 12 bolt rearend re-built. I switched it to a posi with 3.73 gears. It looks really nice. Rearend Specialties in Santa Clara did the work. To bad it will be a long time before I can see it work ( My truck is in pieces).

mshirey · 03-01-2004, 06:11 PM

How much did it cost to have the rear converted to a posi? What was involved in the change? I'm thinking about doing it for my dana 60.

**Classic Heartbeat** · 03-01-2004, 06:15 PM

A buddy and myself just rebuilt the 72 307 possi that I have for my panel. Wasn't near as bad as I had it made it out to be..LOL I replaced the original clutches with carbon clutches also... I am painting it now and will be doing the brakes before I set it under my panel. WES www.ClassicHeartbeat.com

boraxman · 03-01-2004, 06:20 PM

I did my 12 bolt w/ new Eaton posi ,gears, bearings, axles, fluids and labor right around $1200. I have yet to try it....but soon

dinnut · 03-01-2004, 06:32 PM

wes, did you decide to put rear discs on it? i think it would be a good idea to show off some of your products. like when someone asks hey your trucks got 4 wheel discs whered you get em you can say you sell them and you got a potential customer right there!

jugernot · 03-01-2004, 07:19 PM

mshirey

To answer you question, it cost me $871.00. I had towed the frame without fluid in the rear, so all the bearing melted. Like Wes said, it doesn't look to be that hard, I just wanted it done right.

subfitter · 03-01-2004, 07:27 PM

was stuck in oregon with blown rearend-repair shop quoted me $2400-to convert (308)to posi replacing everything-had to pass on that! bought truck down there - rearend dry

1969 GMC · 03-01-2004, 07:32 PM

Quote:

Originally posted by jugernot
I just got my 12 bolt rearend re-built. I switched it to a posi with 3.73 gears. It looks really nice. Rearend Specialties in Santa Clara did the work. To bad it will be a long time before I can see it work ( My truck is in pieces).

Sounds like you are ready for some

!!

I am too, I just bought an Eaton HO52 with a No-Spin for my truck, 4.56 gears, I can't put it in right away either...can't wait for it. then i can

too!

jugernot · 03-01-2004, 07:35 PM

There are a couple of pics
1.

jugernot · 03-01-2004, 07:39 PM

2.

duke68ss · 03-01-2004, 07:57 PM

Yeah I heard rear end specialties does great work.. All my buddies have gone there and had no problems what so ever.. I have a dana 44 I might get beefed up.

**Classic Heartbeat** · 03-01-2004, 08:11 PM

dinnut, I am not going to go with rear disk right now. Just plowing too much money into it for that added expence. If the drums would have been bad, then I would have converted. My rear end has the heavy duty finned drums on it and those wouldn't have been cheap to replace. I was able to turn them so I decided to stay drum. Sometime in the future I will probably go with rear disk, just not right now. I got realy lucky with the gears though. They were in exelent condition!! I was just going to replace the pinion seal, but when I pulled it I went ahead and pulled the front pinion bearing. It was badly pitted from moisture and sitting in one possition too long, so I decided to tear the rear end down. The inner was pitted also. So I replaced all of the bearings and while I was at it I replaced the stock clutches with carbon clutches. I will have about $350.00 in it with all new bearings, clutches, brake shoes, wheel cylinders, brake hardware and paint. WES www.ClassicHeartbeat.com

72MARIO · 03-01-2004, 08:30 PM

Seems like we all have not been able to try out of new rear ends. I too have had my rear end rebuilt It costes $1100 CDN. New Baer Gears, bearings, clutches. I cant wait till I can drive it mabye this summer ....

robertwb · 03-01-2004, 09:54 PM

what about those lockright things(the locker that just replaces the spider gears)-they cost about $400 and don't require any special tools to install-I'm pretty sure they make one for 12 bolts-anybody have any experience with them?good/bad?

03-01-2004, 05:49 PM	#1
jugernot Life, Be In It..... Join Date: Oct 2003 Location: Novato, California Posts: 1,498	Posi Rear end I just got my 12 bolt rearend re-built. I switched it to a posi with 3.73 gears. It looks really nice. Rearend Specialties in Santa Clara did the work. To bad it will be a long time before I can see it work ( My truck is in pieces).

03-01-2004, 06:11 PM	#2
mshirey Registered User Join Date: Apr 2000 Location: San Diego, CA Posts: 110	How much did it cost to have the rear converted to a posi? What was involved in the change? I'm thinking about doing it for my dana 60. __________________ Mike 67' GMC Fleetside

03-01-2004, 06:15 PM	#3
Classic Heartbeat Project Junkie! Fishing Poor!! Join Date: Dec 1999 Location: Olympia,Wa. 98512 Posts: 10,768	A buddy and myself just rebuilt the 72 307 possi that I have for my panel. Wasn't near as bad as I had it made it out to be..LOL I replaced the original clutches with carbon clutches also... I am painting it now and will be doing the brakes before I set it under my panel. WES www.ClassicHeartbeat.com __________________ On-line catolog Classic Heartbeat Pickup Parts WEHEPP@comcast.net Call us Toll Free (888) 338-2502 Like Us on Facebook No appointment necessary. 72 BB Chevy Custom Deluxe / Custom Camper 67 I-6 (Soon to be 5.7 LS1) Panel 68 BB Chevy Short Bed 72 6.0 LQ9 Short Bed Chevy 4X4 Olympia's fastest growing truck parts supplier. Olympia's home for Wayward Chevys

03-01-2004, 06:20 PM	#4
boraxman Keepin an eye out Join Date: Feb 2003 Location: So.Cal Posts: 3,921	I did my 12 bolt w/ new Eaton posi ,gears, bearings, axles, fluids and labor right around $1200. I have yet to try it....but soon __________________ 1970 Chevy C10 SWB 5.3 1996 Toyota Tacoma SR5 4x4 2007 Vespa GTS 250 Scooter ZIP 91351

03-01-2004, 06:32 PM	#5
dinnut Registered User Join Date: Apr 2003 Location: missouri city, tx Posts: 4,486	wes, did you decide to put rear discs on it? i think it would be a good idea to show off some of your products. like when someone asks hey your trucks got 4 wheel discs whered you get em you can say you sell them and you got a potential customer right there! __________________ 70 longbed 496/th400/Ford 9"

03-01-2004, 07:19 PM	#6
jugernot Life, Be In It..... Join Date: Oct 2003 Location: Novato, California Posts: 1,498	mshirey mshirey To answer you question, it cost me $871.00. I had towed the frame without fluid in the rear, so all the bearing melted. Like Wes said, it doesn't look to be that hard, I just wanted it done right.

03-01-2004, 07:27 PM	#7
subfitter Registered User Join Date: Dec 2003 Location: gig harbor wa. Posts: 57	was stuck in oregon with blown rearend-repair shop quoted me $2400-to convert (308)to posi replacing everything-had to pass on that! bought truck down there - rearend dry

03-01-2004, 07:35 PM	#9
jugernot Life, Be In It..... Join Date: Oct 2003 Location: Novato, California Posts: 1,498	There are a couple of pics 1. Attached Images

03-01-2004, 07:39 PM	#10
jugernot Life, Be In It..... Join Date: Oct 2003 Location: Novato, California Posts: 1,498	2. Attached Images

03-01-2004, 07:57 PM	#11
duke68ss Registered User Join Date: Dec 2003 Location: Nor Cal Posts: 104	Yeah I heard rear end specialties does great work.. All my buddies have gone there and had no problems what so ever.. I have a dana 44 I might get beefed up.

03-01-2004, 08:11 PM	#12
Classic Heartbeat Project Junkie! Fishing Poor!! Join Date: Dec 1999 Location: Olympia,Wa. 98512 Posts: 10,768	dinnut, I am not going to go with rear disk right now. Just plowing too much money into it for that added expence. If the drums would have been bad, then I would have converted. My rear end has the heavy duty finned drums on it and those wouldn't have been cheap to replace. I was able to turn them so I decided to stay drum. Sometime in the future I will probably go with rear disk, just not right now. I got realy lucky with the gears though. They were in exelent condition!! I was just going to replace the pinion seal, but when I pulled it I went ahead and pulled the front pinion bearing. It was badly pitted from moisture and sitting in one possition too long, so I decided to tear the rear end down. The inner was pitted also. So I replaced all of the bearings and while I was at it I replaced the stock clutches with carbon clutches. I will have about $350.00 in it with all new bearings, clutches, brake shoes, wheel cylinders, brake hardware and paint. WES www.ClassicHeartbeat.com __________________ On-line catolog Classic Heartbeat Pickup Parts WEHEPP@comcast.net Call us Toll Free (888) 338-2502 Like Us on Facebook No appointment necessary. 72 BB Chevy Custom Deluxe / Custom Camper 67 I-6 (Soon to be 5.7 LS1) Panel 68 BB Chevy Short Bed 72 6.0 LQ9 Short Bed Chevy 4X4 Olympia's fastest growing truck parts supplier. Olympia's home for Wayward Chevys

03-01-2004, 08:30 PM	#13
72MARIO Registered User Join Date: Nov 2000 Location: Huntsville Ontario Canada Posts: 4,052	Seems like we all have not been able to try out of new rear ends. I too have had my rear end rebuilt It costes $1100 CDN. New Baer Gears, bearings, clutches. I cant wait till I can drive it mabye this summer .... __________________ 1968 Suburban numbers matching all original truck now equipped with 6.0/4L80 on Accuair http://67-72chevytrucks.com/vboard/s...d.php?t=625017 1967 C/20 6.0/4L80 Roofing Truck 1990 V2500 Suburban "Plow Truck" 2005 TAHOE DD

03-01-2004, 09:54 PM	#14
robertwb Registered User Join Date: May 2003 Location: brooksville-fla Posts: 77	what about those lockright things(the locker that just replaces the spider gears)-they cost about $400 and don't require any special tools to install-I'm pretty sure they make one for 12 bolts-anybody have any experience with them?good/bad? __________________ 1972 LWB 4x4 1970 LWB 2wd 1971 chevelle 1972 datsun PL-521/nissan

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