160 Tooth ring gear on 65 289 Flywheel?

[RyanG85]

I have a flywheel from a 65 289 Mustang that has 160 teeth. I ran the casting number on MustangTek and it shows as a 157. Is this an oddball part?

 

[1497]

Not really an odd ball, just old. I'm guessing it's got a C3 engineering number. I understand the tooth count was revised to 157 at some point way back when. Someone with exact knowledge of when and why will chime in.

 

[Midlife]

160 tooth flywheels were unique to 260 cid engines (1964.5), but also used for all 1966 K codes and 1967 A or C codes. All have different engineering and casting numbers.

 

[RyanG85]

Thanks for the replies. Is the value of it the same as any other flywheel?

 

[B67FSTB]

157th / 160th flywheel : cars equipped with manual trans ??