Casting #3779552
General Motors Casting Number 3779552 Clutch Housing
Used OEM
Pictures and descriptions are from an original
used GM part.
Inside View
Starter Mounting
Casting Number
The casting number is located in the transmission
mounting area. The number can not be seen with
the transmission mouted.
Casting Code
The casting date is on the passenger side between
the transmission mounting ears, and can be seen
with the transmission installed.
Fork Boot Hole
This housing has the large fork boot hole, that
utilizes the GM part # 3781385 fork boot.
Applications
3785643 (Ident. No. 3779552)
0.683 HOUSING ASSY., Clutch - includes ball stud - See NOTE B
60-61 Pass. (8 cyl.) (exc. Sp. H/Per.) (Chevy Parts Book)
62 Pass. (283,327) (exc. h/Per.) (Chevy Parts Book)
NOTE B. When using on models prior to 1961 it will be necessary to use 1961 clutch fork boot.
Quick Reference
Material: Cast Iron
Size: 168 tooth flywheel
Engine Bolt Pattern: Chevy
Transmission Bolt Pattern: Most GM car (Muncie, Saginaw, Borge Warner)
Transmission to Bellhousing Threads: 1/2"-13
Center Hole Size: 4 5/8"
Fork Ball Stud Threads: 13/16"-16
Inspection Plate Bolt Threads: 1/4"-20
Face to Face Measurement: 6 5/16"
Starter Mounted: Yes
Starter Nose:
Engine Mount Pads: No
Z-bar Mount: No
Note: all measurements are approximate.
Disclaimer:
Most parts that I describe and picture have identification on or with them, others I can identify from other sources and deduction (educated guess).
Factory correct applications are your responsibility. GM made part and part # changes with no rhyme but a reason (no production interruptions at any cost).
Applications are for replacement parts that were available at the time of parts book printing, and when possible model specific assembly manuals.
My observations come from the parts I have in my collection or other reliable sources your parts may differ.
If Factory correctness is your goal, do more research, join car clubs,
forums and buy an assembly manual if one is available for your Project Car (you wont be sorry).
This is a fun and interesting part of the hobby!
