GM's 3729000 Clutch fork Ball Stud

GM part # 372900 is a clutch fork pivot or Ball Stud that screws into original Bellhousings.
This Stud was used on many vehicles from at least 1955 on up. This is the shorter Stud measuring 1 1/2" overall.

NEW 3729000 Clutch Fork Pivot
The pivot (top in photo) is a wear point on used studs.
Assembly manuals say to lubricate this point before attaching
Fork.

Side view
Clutch fork pivots on top. Lower threads screw into the housing.

Bottom view
A 3/8" allen wrench is used to tighten or loosen this ball stud.

Measurement
The overall length is 1 1/2". When seated in a bellhousing approximately 7/8" is exposed.

Applications per the 1938-1965 Chevrolet Parts Catalog

0.796 STUD (13/16-16 stud w/21/32 dia. ball)
56       PASS, w/4BC (2nd design)
56-57 PASS, (exc. 2BC)
55-62 CORVETTE
58-61 PASS, (348)
58-61 PASS, (283) (2nd design)
62       PASS, (8cyl.)
63-64 PASS.,CORVETTE
65       CORVETTE

Applications per the thru 1975 Chevrolet Parts Catalog

0.796 STUD,ball(13/16"---16 w/ 21/32" diameter ball)
70        Chevelle(454)
71-74 All(454)
72       All(402)
70       Chevelle(400)
71       All(400)
66-67 Chevelle,Camaro(396)
68-70 Chevy,Chevelle,Camaro(396)
67-70 Chevy,Chevelle,Camaro(350)
71-75 All(350)
64-67 Chevelle(327)
68-69 Chevy,Chevelle,Camaro(327)
71-73 All(307)
67-69 All(302)
64-67 Chevelle,Camaro(283)
75 Nova(262)
64-67 Chevelle,Camaro(6 cyl.)
68-72 Chevy,Chevelle,Camaro(6 cyl.)
71-75 Pass.

Applications per the Thru 1975 Oldsmobile Parts Catalog Effective May,1980

0.796 BALL STUD
64        F85,J88
65-72 ALL
66-74 Irrig. Eng.
73       ALL A S.T.
74-75 S.T.

Applications Per thru 1975 Pontiac Parts Catalog. Dated November 1,1974

0.796 STUD,Clu Fork Ball
64        T/6-T/8 M.T.
65-75 ALL M.T. exc. H

Applications per the1976-81 Oldsmobile Parts Catalog Effective July,1987

0.796 STUD,Clu Fork Ball
76-77 ALL(260) W/M.T.
77       A W/M.T. (V8)
79       A (267,305) W/M.T. (V8)
76       ALL(250)
77       A (6cyl)
79       A (6cyl)
79-80 X (6 cyl)

Applications per the 1976-1981 Buick Parts Catalog Effective July,1987

0.796 STUD, Ball
76-81 A,X

Applications per the 1953-1982 Corvette Parts Catolog Effective November,1981

0.796 STUD, (1 1/2 stud)
55-65 Y
75-81 Y (350) w/M.T. (2nd design-1975)

Disclaimer:

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.
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!