Location of No. 1 Piston?

Posted by J-P On 2020/8/27 21:18:38

Good evening,
In another topic I talked about the oil leaks on my 356cu engine. Besides the rear main bearing leak, I also have a leak from the oil pump. In the manual, before removing the oil pump, the No 1 piston should be 6 degrees before TDC.
Which one is No 1 piston? The one next to the fan, or the one next to the firewall?
Thank you for you assistance.