Engine decoding

[Mikey59]

Iam not sure if this is the place to put this post. Where on the engine is the numbers and letters to let you know about your engine.

 

[F4R/T]

RB = pad below ac compressor on drivers side of the block up top
B = Pad sits below the Distrubutor
La = is below driver side head on the front
Hemi I’m not sure but I believe it’s the same as RB engines — guys correct me if I’m mistaken ..
VIN locations varied, top of bell housing lip or pan rail depending on year and series of engine...

 

[Jerry Hall]

VIN locations varied, top of bell housing lip or pan rail depending on year and series of engine...

Or none at all prior to 68.