Good stuff all of this.

I am playing around with a 1400 head off a B310 Sunny about 1981 model fitted originally with an automatic transmission. This is presently fitted to an A12 block.

I am looking at getting a new cam for this motor and the cam grinder wants as much info re the motor as possible.
At the moment I am not ready to pull the head off.

What was the combustion chamber size typically used on these heads here in Australia?