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Username Post: Bellhousing,-- Whats it fit?        (Topic#222096)
TRIK-56 
Senior Member
Posts: 855

Loc: Springfield, Mo. USA
Reg: 09-03-00
07-22-09 01:38 PM - Post#1740018    

I have a friend that has a bellhousing but he isn't sure what it fits. He thinks its for a 55-57 Chevy but can't be sure.
He gave me all the numbers off the back of it to see if someone here could tell what it is actually for.
The numbers are as follows:
3704822
GM7
G236
If anyone here has a book or something that tells what this is for and would post it we'd really appreciate it.
Thanks!

Bobby


 

chevynut 
Ultra Senior Member
Posts: 11073
chevynut
Loc: Ft. Collins, CO .....
Reg: 09-22-01
07-22-09 02:55 PM - Post#1740058    
    In response to TRIK-56

Web search resulted in this:

BELL HOUSING 55 Corvette 1955 Chevrolet RARE 3704822

'56 Nomad, C4 Vette F&R suspension, Ramjet 502, Viper T56 6 speed See My Nomad Build
'56 BelAir 2DR Sedan in waiting
'01 Porsche Boxster S
'03 Chevy Silverado 2500HD 4x4 Duramax


 
Thurman55 
Contributor
Posts: 754

Loc: Albany,Ga. Gold Member
Reg: 05-23-02
07-22-09 03:10 PM - Post#1740068    
    In response to chevynut

Why do these seem to pop up with "I have this and don't know what I've got?". Then it's decoded as "rare" and "Corvette". It seems like every time I find a strange part and decode the numbers it comes back "Pinto" or "Vega". My luck, David



 
Webfoot55 
Senior Member
Posts: 1147
Webfoot55
Loc: Keizer OR
Reg: 07-23-01
07-22-09 03:40 PM - Post#1740088    
    In response to chevynut

I still have a 55 bell housing attached to the 3 speed that was in my Car when I bought it, is it rare also
I've been thinking about taking it to the scrap metal yard just to get it out of the shop.

55 BelAir 2Dr Ht -67 Camaro RS


 
Rick_L 
Honored Member
Posts: 27239
Rick_L
Loc: Katy, Tx, USA
Reg: 07-06-00
07-22-09 03:44 PM - Post#1740089    
    In response to Webfoot55

Yours might be medium rare, or even well done by now.



 
DZAUTO 
Senior Member
Posts: 8400

Loc: Mustang, OK, USA
Reg: 12-25-99
07-23-09 07:38 AM - Post#1740424    
    In response to TRIK-56

  • TRIK-56 Said:
I have a friend that has a bellhousing but he isn't sure what it fits. He thinks its for a 55-57 Chevy but can't be sure.
He gave me all the numbers off the back of it to see if someone here could tell what it is actually for.
The numbers are as follows:
3704822
GM7
G236
If anyone here has a book or something that tells what this is for and would post it we'd really appreciate it.
Thanks!



Oh he!! no, it ain't rare!!!
It's your basic, run of the mill 55-6 bell housing for a V8 engine. The G236 translates to July 23, 1956 -------------- USED ON PASS CARS AS WELL AS VETTES!!!!!!!!!!!!!
(Vettes and pass cars shared LOTS of stuff ------------- including bell housings)

The GM7 simply identifies the mold that the molten cast iron was poured into when it was cast at the foundry. The purpose of a mold identification is so that if a problem is discovered with a cast part (this was done with bell housings, blocks, heads, rearend center cases, intake/ex manifolds, etc, etc, etc), then the mold could be pulled and disgarded or corrected.

By the way, 55-57 bell housings are the same (sort of) and are interchangeable, but do have some minor differences, such as the ball stud for the throwout bearing fork and the holes for mounting the starter. NO BIG DEAL --------------- unless of course the casting numbers/date code is a big deal to someone.

Oh ya, the casting number for the LATE-56/57 bell housing is 3733365 (pass car or Vette).



 
100 CHEVY 
Dedicated Enthusiast
Posts: 6217
100 CHEVY
Loc: Helena,Missippi,U.S.A.
Reg: 12-09-04
07-23-09 11:54 AM - Post#1740518    
    In response to DZAUTO

Depends on what rare means to you!
They often have the starter corner broken off.
It is getting "Rare"to find one in good condition,or one that isn't mis-represented as 5/6/7 car when in fact it fits the trucks.
I have a couple extras in case mine goes south.Been rode hard for many years!
Mike.

"You gonna leave it like that?
http://www.picturetrail.com/100chevy


 
Old_Longboarder 
Deceased Member RIP Art
Posts: 12969
Old_Longboarder
Age: 68
Loc: Long Beach Ca, near Vet's...
Reg: 03-28-02
07-23-09 12:00 PM - Post#1740522    
    In response to 100 CHEVY

The truck bellhousings only have one threaded hole on each side for the mounts. Passenger car, two holes on each side.



Home.., is where dog hair sticks to everything but the dog.





 
56sedandelivery 
Dedicated Enthusiast
Posts: 5223
56sedandelivery
Age: 66
Loc: Everett, Wa.
Reg: 02-26-08
07-23-09 12:10 PM - Post#1740527    
    In response to Old_Longboarder

And, on trucks, the two LOWER transmission bolt holes go through from the INSIDE of the bellhousing, and thread into the lower ears of the transmission; truck transmissions had the two lower mounting holes threaded, even though they appear physically identical to passenger car transmissions. The easy way to I.D. a truck VS car (55-57) bellhousing: the passenger car is flat on the bottom, while the truck has a casted in, angled ridge, that's a dead give away at a glance when viewed from the transmission mounting surface. Butch/56sedandelivery.




 
100 CHEVY 
Dedicated Enthusiast
Posts: 6217
100 CHEVY
Loc: Helena,Missippi,U.S.A.
Reg: 12-09-04
07-23-09 03:26 PM - Post#1740622    
    In response to 56sedandelivery

Also have a "V" shaped raised area at the top by the trans bolt holes.
A lot of vendors at swapmeets will sell these as car housings if your not aware of the differences.
Mike.

"You gonna leave it like that?
http://www.picturetrail.com/100chevy


 
Rick_L 
Honored Member
Posts: 27239
Rick_L
Loc: Katy, Tx, USA
Reg: 07-06-00
07-23-09 03:45 PM - Post#1740649    
    In response to 100 CHEVY

Depending on whether you have a early or later bellhousing from the 55-57 era, you need a starter housing that matches. On the 57s, the top bolt is a clearance hole in the bellhousing, and tapped in the starter housing. On earlier bellhousings, the bellhousing is tapped and the starter housing has a clearance hole.

Or something like that. I'm sure DZAUTO will fill in the details if I didn't get it right.



 
DZAUTO 
Senior Member
Posts: 8400

Loc: Mustang, OK, USA
Reg: 12-25-99
07-23-09 06:17 PM - Post#1740752    
    In response to 100 CHEVY

Truck vs car housings.






Notice the difference between the angle for the engine mount between truck (rusty housing) and car housing.




Ball stud for clutch fork on 55-6 housing installs from INSIDE


Ball stud for 57-later installs from OUTSIDE


All three starter mount holes on 55-56 housing are threaded.


The upper starter mount hole on 57-later housings is not threaded (so if a person desired to use a 57-later style starter with a 55-6 housing, the threads in the top hole can just be drilled out).




 
f.i.57chevynut 
Frequent Contributor
Posts: 1518
f.i.57chevynut
Loc: Granada Hills, CA
Reg: 03-04-09
07-25-09 10:49 PM - Post#1741936    
    In response to DZAUTO

All '55 cars and Vettes used the pivot ball that installs from the front because the diaphram pressure plate was short enough to be dropped out the bottom for service. Same for 6 cylinder cars. 2 barrel '56 and '57 cars came with the same pivot ball as the 55 because they also came with the flat diaphram pressure plate. The casting number changed to "365" in 57 because of the new style starter but came both with the pivot ball from the front(2 barrel 265) and the adjustable allen type pivot from the rear to allow service on the taller Borg and Beck pressure plate(powerpack and up). '56 powerpack cars and Corvettes also used a threaded allen type pivot ball like the 57 and later bellhousing for the Borg and Beck pressure plate. I have one in my green wagon but I had to drill out and clearance the top starter hole to convert it the late starter.

Tom Ordway tom@57chevys.com If you don't drive it, why have it?
http://www.americantorque.com/page/0/139/


 
f.i.57chevynut 
Frequent Contributor
Posts: 1518
f.i.57chevynut
Loc: Granada Hills, CA
Reg: 03-04-09
08-12-09 09:44 AM - Post#1752530    
    In response to f.i.57chevynut

I just found my 56 powerpack bellhousing. It's a 922 casting number, dated April 18, 1956. It has all 3 starter bolt holes threaded, indicating 55-56 starter only, as refered to in Tom Parson's post, and not a service replacement from 1966.





There is another number for this bellhousing. I think it's last 3 of the casting number are 002. I don't have one of those any longer. I've been thinning the heard.

Tom Ordway tom@57chevys.com If you don't drive it, why have it?
http://www.americantorque.com/page/0/139/


 
JimmyA 
Forum Newbie
Posts: 6

Reg: 02-06-14
02-08-14 11:49 AM - Post#2424866    
    In response to DZAUTO

Hi Tom, Maybe you can help me on the subject of bell housings. I have a 1957 Chevy NAPCO pickup. I bought it from an owner that took out the 235 and put a 283 in it. I'm trying to restore it back to as original as I can and just purchased a 1957 235 but the bell housing from the 283 isn't compatible. Would you know what the bell casting numbers are for the bell housing that I need to find? It would make the search a lot easier. Thanks Jim



 
55 Shaker 
Member
Posts: 1395

Age: 68
Loc: north central IL.
Reg: 03-13-06
02-08-14 01:23 PM - Post#2424881    
    In response to JimmyA

Jim, maybe you can find some information here. Hope it helps.
http://www.tracyperf.com/bellhousings.html

The older I get, the more dangerous, I am !!!!


 
raycow 
Honored Member
Posts: 26938
raycow
Loc: San Francisco, CA
Reg: 11-26-02
02-08-14 04:33 PM - Post#2424927    
    In response to JimmyA

One casting no which will work is 3837001. Here are some pics (disregard the first pic, which is some kind of trans tail housing that does not belong in this auction):
http://www.ebay.com.au/itm/GM-216-Cast-Iron-B ellho...

There may be other bellhousings which can be used. Look for angled mounting pads on the bottom rear which have ONE tapped hole in them. There is a similar bell with TWO tapped holes which was made for passenger cars and will not fit a truck. Another truck bell ID feature is that the bottom two holes for the transmission bolts will NOT have threads in them.

If any questions, please feel free to ask.

HAH! I just now noticed that this thread was brought back from the dead. The last prior post dates from August 2009. Also, this recent excursion probably belongs on the truck forum. I will ask the moderator if he can move it.

Ray

Those who choose an automatic transmission want transportation. Those who choose a manual transmission want to drive.


 

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