Casting #3704922 168 Tooth Chevy Cast Iron
General Motors Casting Number 3704922 Bellhousing
The Chevrolet "922" is a cast iron car Bellhousing.
This is a 1955-57 Chevy style bell with side motor
This Bell uses a 4 5/8" center hole and four 1/2-13
tapped holes for transmission attachment.
The starter pocket and motor mount flange are
integrated in the casting.
This example has the top engine mounting hole
This view shows the z-bar bracket mounting holes.
These clutch housings utilize two piece stamped
steel inspection covers.
When buying any Bellhousing that the starter
mounts to, be sure to check for broken starter bolt
holes. This is a common problem
This bell has a 7/16"-20 tapped hole for the Clutch
Fork Ball Stud.
TIP : This is the same size as the Lakewood
Adjustable Pivot Stud.
Ball Stud Hole
This is a outside view of threaded clutch fork
The Casting number is hidden when the transmission
Date code is alphanumeric
3716595 (cast 3704922)
0.683 HOUSING, Clutch
55-56 Pass. 8 cyl. (exc. P.G., 4BC, dual 4BC) (Chevy Parts Books)
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!