A 57 235 at 12 degrees initial? That is not really what you want. For 57 the factory setting was TDC, right at the bb. Some uses and applications specified 5 degrees before tdc. Let me get a copy of the Sun tune up chart for 57.
Attachments
IMG_3999.jpeg (188.57 KB, 60 downloads)
IMG_1262.jpeg (175.45 KB, 60 downloads)
IMG_2858.jpeg (274.07 KB, 60 downloads)

Last edited by Dragsix; 05/19/2025 1:50 PM.
Mike