I purchsed a flywheel that is supposed to be for a 304 casting # 3197219 but its a combonation of version 1 and 3 flange recess is 4.65 but the weight is at 7:30. It is at the machine shop and I am having the crank balanced with the flywheel and harmonic balancer,I'll let you know what the results are as far as how close the initial balance is. I believe it is a 304 flywheel because there is to many of them around to be for a 360 or 401 which usualy had an automatic behind them. Also I have seen other posts that said they had this casting # on there 304 but assumed they had been changed by a previosely. What do you think am I totaly off base here?
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")
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