Casting #3764591 60 Vette and Pass. Aluminum
General Motors Casting Number 3764591 Clutch Housing
The GM casting # 3764591 bellhousing is an
all aluminum casting.
This housing takes the two piece inspection plate.
This picture shows the starter "bump" and 2 of
the starter mounting holes.
The top is plain with no numbers or lettering.
This picture shows the clutch fork cut out.
This is a shot of the engine side z bar bracket
mounting holes, as used on the 1960 Corvettes.
This is an overall view of the backside and
inside of the casting # 3764591 clutch housing.
Close Up Inside
The notches around the transmission locating
hole appear to be factory.
The starter is mounted directly to this housing
via two 3/8"-16 tapped and one thru hole.
Clutch Fork Hole
This is an inside view of the clutch fork hole.
The casting number is located in the transmission
I believe casting # 3764591 is listed as part #
3774739 in the GM parts catalogs.
0.683 HOUSING ASSY., Clutch (Aluminum)
60 Pass. w/ H/Per., Sp. H/Per (348)
Factory correct applications are your responsibility. GM made part and part # changes with no rhyme but a reason (no production interruptions at any cost).
Application charts 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!