#1  
Old 01-06-2021, 02:23 PM
Bill Eveland's Avatar
Bill Eveland Bill Eveland is offline
Ultimate Warrior
 
Join Date: Apr 2004
Location: Glasford Il
Posts: 3,650
Default frame and 3.55 posi value

I hate to ask these questions, ive been out of the GTO game for so long, im not familiar with currant values. If I end up selling or parting out a car looking for an honest value for each part separately.

__________________
Illinois Outlaw Gassers

6.27@107
9.97@131
  #2  
Old 01-06-2021, 02:43 PM
rare4k's Avatar
rare4k rare4k is offline
Chief Ponti-yacker
 
Join Date: Oct 2006
Location: Annapolis MD.
Posts: 546
Default

Year of both?

Sent from my moto z3 using Tapatalk

  #3  
Old 01-06-2021, 03:43 PM
Bill Eveland's Avatar
Bill Eveland Bill Eveland is offline
Ultimate Warrior
 
Join Date: Apr 2004
Location: Glasford Il
Posts: 3,650
Default

both 69

__________________
Illinois Outlaw Gassers

6.27@107
9.97@131
  #4  
Old 01-07-2021, 02:05 PM
north's Avatar
north north is offline
Ultimate Warrior
 
Join Date: Oct 2006
Posts: 6,388
Default

Hardtop frames don't seem to pull much money unless they are rustfree but currently in the rustbelt where there will be demand for them. Convertible frames pull good money but they obviously have to straight and rustfree.

3.55 STT diff's (meaning the whole rear end assembly with axles etc) seem to be worth $500-$1,000. Obviously mechanical condition of the diff itself matters but the date on the housing matters with later dates being more in demand than earlier ones (probably because of demand by Judge owners).

__________________
My Break Away Squad
1969 Fbird (Base, 350 & Sprint Cvt’s - 400HO & TA Hardtops)
1969 LeMans (2dr & 4dr Hardtop and a Cvt)
1969 LeMans Safari 2 seat Wagon
1969 GTO (2 Cvt, 2 Hardtops & Judge Hardtop)
1969 Catalina (3 Cvt’s & a 2dr hardtop)
1969 Ventura 2 Seat Wagon
1969 Executive 4dr Sedan
1969 Bonnie Cvt
1969 Bonnie 3 Seat Wagon (2 of them)
1969 Bonnie Brougham (4dr Hardtop & Cvt)
1969 Grand Prix SJ (2 of them)
1969 2+2 2dr Hardtop (Canadian model)
  #5  
Old 01-07-2021, 02:43 PM
Greg Reid's Avatar
Greg Reid Greg Reid is offline
Ultimate Warrior
 
Join Date: May 2003
Location: Palmetto, GA. USA
Posts: 16,163
Default

I bought a 3:55 posi with the 'N' cast on the housing for $600 a few years ago. Originally from a '69 GTO.
As I recall, that's a 4 pinion nodular rear. Seems to be about the average price range from what I've seen.

__________________
Greg Reid
Palmetto, Georgia

  #6  
Old 01-08-2021, 01:38 PM
north's Avatar
north north is offline
Ultimate Warrior
 
Join Date: Oct 2006
Posts: 6,388
Default

Iirc it's the series three STT that triggers the nodular rear and 4 pinion unit, 3.36 and up numerically.

The exception is GP's, they used a 4 pinion STT on the 3.23 axles which would have a 2 pinion on an A or F body. Not sure why, perhaps the extra weight of the G body and/or the optional 428 engines?

__________________
My Break Away Squad
1969 Fbird (Base, 350 & Sprint Cvt’s - 400HO & TA Hardtops)
1969 LeMans (2dr & 4dr Hardtop and a Cvt)
1969 LeMans Safari 2 seat Wagon
1969 GTO (2 Cvt, 2 Hardtops & Judge Hardtop)
1969 Catalina (3 Cvt’s & a 2dr hardtop)
1969 Ventura 2 Seat Wagon
1969 Executive 4dr Sedan
1969 Bonnie Cvt
1969 Bonnie 3 Seat Wagon (2 of them)
1969 Bonnie Brougham (4dr Hardtop & Cvt)
1969 Grand Prix SJ (2 of them)
1969 2+2 2dr Hardtop (Canadian model)
  #7  
Old 01-11-2021, 04:48 PM
Baron Von Zeppelin Baron Von Zeppelin is offline
Ultimate Warrior
 
Join Date: Jul 2005
Location: North Carolina
Posts: 8,419
Default

68 69 70 the 3.55 STT could be Regular or Nodular (N) HD

HD (N) was extra cost on those STT vs STT-HD
3.90 & 4.33 were the only ones that were default HD with STT

Bill you need to check the housing for a big raised N on topside of housing.
More value with it

  #8  
Old 01-11-2021, 07:32 PM
north's Avatar
north north is offline
Ultimate Warrior
 
Join Date: Oct 2006
Posts: 6,388
Default

In 69 (and in 68 and 70 except for the 455 i believe) )you never could choose between the HD and regular version of STT, it was determined by axle ratio...

All GTO's with 3.36 or higher (numerically) axles that were ordered with an optional limited slip were the 4 pinion HD-STT at $63.19. 3.23 or numerically lower with limited slip were the standard 2 pinion STT at $42.13.

In theory all the 4 pinion STT's (HD) should also have had the N (nodular) housing but perhaps that didn't always happen.

With 3.90 and numerically higher axles HD-STT was mandatory.

__________________
My Break Away Squad
1969 Fbird (Base, 350 & Sprint Cvt’s - 400HO & TA Hardtops)
1969 LeMans (2dr & 4dr Hardtop and a Cvt)
1969 LeMans Safari 2 seat Wagon
1969 GTO (2 Cvt, 2 Hardtops & Judge Hardtop)
1969 Catalina (3 Cvt’s & a 2dr hardtop)
1969 Ventura 2 Seat Wagon
1969 Executive 4dr Sedan
1969 Bonnie Cvt
1969 Bonnie 3 Seat Wagon (2 of them)
1969 Bonnie Brougham (4dr Hardtop & Cvt)
1969 Grand Prix SJ (2 of them)
1969 2+2 2dr Hardtop (Canadian model)
  #9  
Old 01-12-2021, 01:44 PM
3goats's Avatar
3goats 3goats is offline
Senior Chief
 
Join Date: Apr 2005
Location: Canada
Posts: 490
Default

Just a note , The standard SST differential would have a part # 9795082 casting which is the 2 pinion carrier.
The HD SST which is 3.55, 3.90, 4.33 has casting 9795084 which is the 4 pinion casting with the N on the top.
Very hard to find and worth at least 1000 from what I have seen.

  #10  
Old 01-18-2021, 04:30 PM
Bill Eveland's Avatar
Bill Eveland Bill Eveland is offline
Ultimate Warrior
 
Join Date: Apr 2004
Location: Glasford Il
Posts: 3,650
Default

That much just for the carrier, or complete rear ? Thanks everyone for the info

__________________
Illinois Outlaw Gassers

6.27@107
9.97@131
  #11  
Old 01-18-2021, 05:10 PM
Baron Von Zeppelin Baron Von Zeppelin is offline
Ultimate Warrior
 
Join Date: Jul 2005
Location: North Carolina
Posts: 8,419
Default

The whole thing drum-to-drum
But you have to check for the N on top and the casting number to get in that range.

Would also need to be a clean part with minimal pitting and an internal inspection.
Rusty pitted dirty with unknown condition internally won't bring those figures.

I have a 68 3.55 posi and a 70 3.55 posi - neither with N casting
it makes a difference

  #12  
Old 01-19-2021, 10:08 PM
einstein's Avatar
einstein einstein is offline
Ultimate Warrior
 
Join Date: Jun 2002
Location: in the middle of the Real America
Posts: 1,061
Default

I'd gladly pay more than that if I could find a Nodular 3.55 for my late-68 build 69 Firebird Sprint.

  #13  
Old 01-20-2021, 02:40 AM
Greg Reid's Avatar
Greg Reid Greg Reid is offline
Ultimate Warrior
 
Join Date: May 2003
Location: Palmetto, GA. USA
Posts: 16,163
Default

I guess I got a pretty fair deal on this one then. Still haven't gotten around to installing it.

Sent from my moto g(6) play using Tapatalk

__________________
Greg Reid
Palmetto, Georgia

  #14  
Old 01-21-2021, 05:46 PM
68gtoMN's Avatar
68gtoMN 68gtoMN is offline
Ultimate Warrior
 
Join Date: Nov 2005
Location: Minneapolis Area
Posts: 2,261
Default

I think I have been fortunate to accumulate a batch of 3.55:1 Nodular STT rear ends for my 68 GTOs. I don't believe I currently have any spares, and nothing currently for a Firebird. I sold 3 Firebird positraction differentials about 6 years ago.

I know of a guy in town here who might have one though...I'll check with him.

__________________
'68 GTO 4-spd Hardtop (11)
'68 GTO Convertible AT (1)
'70 LeMans Sport

Land of Lakes Muscle Car Classic
Facebook Event
Facebook Wall (Kurt Smith,Minneapolis)
  #15  
Old 01-22-2021, 02:11 AM
Greg Reid's Avatar
Greg Reid Greg Reid is offline
Ultimate Warrior
 
Join Date: May 2003
Location: Palmetto, GA. USA
Posts: 16,163
Default

Off topic but....Kurt, do you or your friend have a drivers side tinted quarter glass for my '68? I'll hang up and listen for your answer offline.

__________________
Greg Reid
Palmetto, Georgia

  #16  
Old 03-16-2021, 07:45 PM
Bill Eveland's Avatar
Bill Eveland Bill Eveland is offline
Ultimate Warrior
 
Join Date: Apr 2004
Location: Glasford Il
Posts: 3,650
Default

Looks like i got lucky, N casting on the housing. Now just need to decide which car to build , probably the mayfair maize vinyl top, manual trans car,and get rid of some of the other projects.
Attached Thumbnails
Click image for larger version

Name:	20210316_183516.jpg
Views:	97
Size:	33.5 KB
ID:	562787  

__________________
Illinois Outlaw Gassers

6.27@107
9.97@131
  #17  
Old 03-17-2021, 07:53 AM
indymanjoe's Avatar
indymanjoe indymanjoe is offline
Ultimate Warrior
 
Join Date: Nov 2009
Location: Milford Michigan
Posts: 1,651
Default

I sold a 68 a-body N 3:55 last summer for 800 couldn't read the axle tube code. I had the rear cover off for inspection and the first guy that showed up took it. fwiw

__________________
72 Luxury Lemans nicely optioned
These cars are meant to be driven, so enjoy the hell out of all of it - not just look at it when it's clean.
  #18  
Old 03-18-2021, 05:32 PM
Half-Inch Stud's Avatar
Half-Inch Stud Half-Inch Stud is offline
Ultimate Warrior
 
Join Date: Jul 2000
Location: BlueBell, PA or AL U.S.A.
Posts: 18,457
Default

Quote:
Originally Posted by einstein View Post
I'd gladly pay more than that if I could find a Nodular 3.55 for my late-68 build 69 Firebird Sprint.
I forget if my former 69 Sprint 4-speed had the N on top the Case ( 3.55;1 Posi ). I remember seeing an N but forgot which car..

  #19  
Old 03-22-2021, 07:45 PM
Bill Eveland's Avatar
Bill Eveland Bill Eveland is offline
Ultimate Warrior
 
Join Date: Apr 2004
Location: Glasford Il
Posts: 3,650
Default

Ive had some ask if the rear is for sale , would rather sell the car with frame with shell together.

__________________
Illinois Outlaw Gassers

6.27@107
9.97@131
  #20  
Old 03-29-2021, 06:39 PM
Bill Eveland's Avatar
Bill Eveland Bill Eveland is offline
Ultimate Warrior
 
Join Date: Apr 2004
Location: Glasford Il
Posts: 3,650
Default

Looks like i got lucky again, another one of my cars i knew was posi, even though its a 71 2.78 open housing.
It ended up having a 3.36 posi that someone swapped in, so thats the lower end carrier for 3.55, 3.90 etc... At one point pinion had gotten loose and made some marks on the outside of the case , but dont think its an issue to run.
Attached Thumbnails
Click image for larger version

Name:	20210328_114833.jpg
Views:	48
Size:	77.3 KB
ID:	563651   Click image for larger version

Name:	20210328_114817.jpg
Views:	57
Size:	50.3 KB
ID:	563652  

__________________
Illinois Outlaw Gassers

6.27@107
9.97@131
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT -4. The time now is 06:13 AM.

 

About Us

The PY Online Forums is the largest online gathering of Pontiac enthusiasts anywhere in the world. Founded in 1991, it was also the first online forum for people to gather and talk about their Pontiacs. Since then, it has become the mecca of Pontiac technical data and knowledge that no other place can surpass.

 




Copyright © 2017