I have a 22 truck (not a TT)with a ruxtell rear axle, would this be factory installation or a later modification? I thought only TT has a ruxtell. Also the block has no number on it, does this indicate an after market block?
I am new to Ts, my experience is in A and AA
Ruckstells are used on cars and pickups. They are not original Ford equipment, but are period correct accessories. As I understand it, the Ruckstell was one of the few non Ford parts which Henry approved to be installed by his dealers. So it might have been installed by a Ford dealer. They are still being manufactured today and many have installed them in recent years.
Replacement engines were sold with serial numbers on them. Replacement blocks were unnumbered and were supposed to be stamped with the numbers of the engines they replaced. Yours could be a replacement block, or it could have had the serial number removed for some reason. Without a serial number, the casting date will be the closest you can get to the assembly date.
Model T blocks had no casting dates after around 1923. Also, there were aftermarket blocks made by other companies. The correct spelling for Ruckstell is noted above.