Casting #464697 168 Tooth Chevy (2 types)
The Chevy "697" is a 168 tooth aluminum Bellhousing, and like its little brother the"606", Chevrolet manufactured 2 versions.
Version #1 as near as I can tell was a replacement to the 3899621. In fact, "621" is cast on the clutch fork stud boss.
Version #2 is specific to the 1978-87 A & G body, has "697" cast into the stud boss, and can only be used with the 14007356 clutch release fork.
This picture looks exactly like the "621" and "444" bellhousing. On the outside it is, except for the part number.
The example I own has the part number is lightly cast with the middle 4
sitting atop a bump.
Did this mold make the "469697" before being modified?
This picture also shows date code.
GM is cast above the transmission mounting flange.
This is the driver-side view and shows the clutch release fork hole.
The hole is in the same location on both versions.
This view shows the starter bump that is typical of all Chevrolet 168 tooth aluminum Bellhousings.
Here you can see that the clutch fork ball stud is in the upper half of the stud boss, which makes this a "621" replacement bell.
This version can utilize the 3892632,14066235 and 340278 clutch release forks.
Inside Part #
This clutch housing is a replacement for the"621".
If the clutch fork ball stud was in the lower half of the boss, the housing would be specific to 1978-87 A & G body cars.
168 tooth flywheel
4 5/8" transmission hole
6 5/16" face to face depth
Application per 1976-1981 Chevrolet parts catalog.
78 A (350) W/M.T.
This translates to: 1978 A bodies With 350 cubic inch Chevy engine and Manual Transmission.
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.
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 and 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!