AMC Standard Flywheels
Year Engine Part#

77-79 FOUR 325-0437
67-71 SIX 317-2415
72-79 SIX 321-2623
67-69 290 317-9069
70-71 304 319-6927
72-78 304 w/3s 321-2651
79 304 323-3955
67-69 343 318-1609
70-71 360 319-6929
72-74 360 321-2653
68-69 390 319-1662
*AM Dealer note/replace with 319-1661 or 319-1661-C
70 390 319-6929
71 401 321-0496
72-74 401 w/4s 321-2655

THREE distinctly different versions of the flywheel with part #3197219. If 
you have one of these flywheels, and you want to follow along with the 
description that follows, place your flywheel flat on the bench with the 
casting number facing up and at 12:00. (like you're reading a clock)

Version #1: #3197219-C
Crankshaft flange recess measurement: 4.500"
Counterweight position: at 7:30
Known to be out of a dead stock 1970 390 4-speed car.

Version #2: #3197219-C
Crankshaft flange recess measurement: 4.500"
Counterweight position: at 4:30
Known to be out of a dead stock 1970 360 4-speed car.

Version #3: #3197219 Does not have the "-C" after the casting
number, but does have "E-25" (or other letter/number combo) cast in
just above the counterweight.
Crankshaft flange recess measurement: 4.650 (approx. 5/32" larger
than the above two versions)
Counterweight position: 9:30
Exact application: unknown. Believed to be out of a 72/up 360 or 401
(304's do not have a counterweight)

All cast-in counterweights are one square inch, with the exception of 
version #3 which is 1/4" shorter. (length 1", width 1", depth 3/4")

The 70-72 flywheels 70-72 360/390/401 with castings 3197219 have MORE than the three
counterbalance weights in different areas than mentioned above.
There are about 5-7 different ones known to exist. This is two photos of the 70-72 360/390/401
weight, which is about sized of a Chunky chololate bar.

close up photo

farther back photo

Original 290, 343 flywheels are basically obsolete. 390 flywheels extremely difficult to locate. 360 & 401 flywheels more plentiful
and a number of aftermarket companies were reproducing them like Scheiffer & Hayes.