Transmission codes

[Targa68]

Please help with transmission codes
901.301.301.01

902/1

227348

45/65

901.301.101.02

Thanks Louis

[Matt Monson]

1966 Model Year 911 or 912 gearbox made the 45th week or 1965. AFMSX ratios.

[Targa68]

What's AFMSX ratios?.

[JJ 911SC]

Originally Posted by Targa68

What's AFMSX ratios?.

From a FS post:

1st Gear - 'A' 11:34 ratio
2nd Gear - 'F' 18:34 ratio
3rd Gear - 'M' 22:29 ratio
4th Gear 'S' 25:26 ratio
5th Gear - 'Z' 29:23 ratio

[Matt Monson]

Originally Posted by Targa68

What's AFMSX ratios?.

Pelican Technical Article: 901 & 915 Transmission Gear Ratios

Here's the ratio break out from our host's tech articles.

[djpateman]

That is an interesting box. The date code and casting number would normally place it about 1000 serial #'s earlier, so I guess the casting sat around for a while (possibly 7 weeks). Photos for documentation would be very useful for me. Note that the date codes are casting dates, not closely related to the date it was installed in a car. From about week 52/65 the casting version changed to: 901.301.101.0R