mk1-forum.net

http://minispares.com/article/Technical ... -head-2022

Came across this last night. Don't remember seeing it posted on this forum before.
It is a very detailed description of all the A series heads and background on the various casting marks and numbers.

Used to be one on Keith Calver's site too ... not as detailed though!

This thread covered some recent research on foundry date codes:
viewtopic.php?f=3&t=32103