Gain extra benefits by becoming a Supporting Member Click here find out how!

Classic Performance Products Classic Parts
American Auto Wire Classic Industries
Danchuk Catalog
Hellwig Products IncPerformance Rod & CustomJoin the Community today
Ecklers AutoMotiveNu-Relics Power Windows

Ecklers AutoMotive
Username Post: Saginaw 3spd decoding info,help        (Topic#355449)
49erman 
Poster
Posts: 71

Loc: So Cal Lower Desert
Reg: 01-02-18
03-02-19 07:13 PM - Post#2761143    

Hello there every one.

I have just bought a parts lot of trans stuff, was only wanting the flywheel and Bellhousing for what he was asking $, all the rest was kinda free to me.... That being said I would like to know what the heck I have from the Casting Numbers too Date Codes and its RPO code for this weird "5" hole trans which I think its a Saginaw HD 3 spd. Needing to know all about it as it needs some parts to be replaced. Here is all the specs.

1.Bellhousing-GM7 3815891 (K15) 4.11/16" dia hole also with 2 lower bell to cross member mounting pads each having 1 hole and 1 index pin, Not a 5 hole bell only standard 4 mounting holes.
2.Flywheel-GM 3729004 (D163-8) 168 tooth. One set of clutch holes.
------------------------- -------------------------
3.Main Case-GM24 6273245 (L33)stamping-C4Z140469.
4.Side Cover-GM 3952645 (L193)25,7bolt,1 top center bolt,with lower right side cover area stamping-S4A19.
5.Brg Retainer-GM27 3920740.
6.Input Shaft,no groves, 1.1/8" dia
5.Tail Housing-326558 GM56 (A84)with trans mount also 3 tapped holes for optional floor shift on tail end.
6.TCS switch under 2-3 shift lever.
7.Splines-10 frt 27 rear.

I do somewhat under the date codes but what I see here is 3 different sets of them, so I think I have a Heinz 57 deal here. What is this?
Thanks in advance




Edited by 49erman on 03-02-19 07:14 PM. Reason for edit: No reason given.

 
Ecklers AutoMotive
49erman 
Poster
Posts: 71

Loc: So Cal Lower Desert
Reg: 01-02-18
04-03-19 11:14 AM - Post#2763580    
    In response to 49erman

  • 49erman Said:
Hello there every one.

I have just bought a parts lot of trans stuff, was only wanting the flywheel and Bellhousing for what he was asking $, all the rest was kinda free to me.... That being said I would like to know what the heck I have from the Casting Numbers too Date Codes and its RPO code for this weird "5" hole trans which I think its a Saginaw HD 3 spd. Needing to know all about it as it needs some parts to be replaced. Here is all the specs.

1.Bellhousing-GM7 3815891 (K15) 4.11/16" dia hole also with 2 lower bell to cross member mounting pads each having 1 hole and 1 index pin, Not a 5 hole bell only standard 4 mounting holes.
2.Flywheel-GM 3729004 (D163-8) 168 tooth. One set of clutch holes.
------------------------- -------------------------
3.Main Case-GM24 6273245 (L33)stamping-C4Z140469.
4.Side Cover-GM 3952645 (L193)25,7bolt,1 top center bolt,with lower right side cover area stamping-S4A19.
5.Brg Retainer-GM27 3920740.
6.Input Shaft,no groves, 1.1/8" dia
5.Tail Housing-326558 GM56 (A84)with trans mount also 3 tapped holes for optional floor shift on tail end.
6.TCS switch under 2-3 shift lever.
7.Splines-10 frt 27 rear.

I do somewhat under the date codes but what I see here is 3 different sets of them, so I think I have a Heinz 57 deal here. What is this?
Thanks in advance




A little bit of an update. Now not real sure for reading the date codes if that is what they are (k15,D163-8,L33,L193,A84) ,thought I had the Date Code brake down info but what I have doesn't have the letter "L" so still upside down on that one.
What I have found (if correct) this 5 mounting hole trans is a Truck HD 3spd Saginaw RPO is SM326 1973-80 usage. But then the TCS trans control spark was first used in 1971. As far as with the main case having this stamping (C4Z140496) this one I've been told is a partial VIN. The tail housing that uses a trans mount is usually for Cars and the 3 tapped holes at the rear is usually for a floor shifter. Now for the spline count this one 10 & 27 then if I was told right it changed in 70 to a count like this 16 & 32 or something like that, remember this trans is a 73 & up.
I have come to the Conclusion which I said before this 3spd 5 hole mounting trans is a HEINZ 57 MORPHODITE Variety. Or I can look at it as it came off the Assembly Line this way.



Edited by 49erman on 04-03-19 11:18 AM. Reason for edit: No reason given.

 
Ecklers AutoMotive
Icon Legend Permissions Topic Options
Report Post

Quote Post

Quick Reply

Print Topic

Email Topic

361 Views
FusionBB
FusionBB™ Version 2.1
©2003-2006 InteractivePHP, Inc.
Execution time: 0.087 seconds.   Total Queries: 16   Zlib Compression is on.
All times are (GMT -0800) Pacific. Current time is 03:04 PM
Top