Piston Choices

Stock Piston spec. per factory manual:

Outside Diameter                     91.1mm   /   3.587in.

Piston-to-Cylinder Clearance  .03-0.05mm  /  .0012-.0020in.

Ring Groove Width., 1 & 2           1.5mm  /  .059in.

                          , Oil              4.0mm  /  .157in.

JE -forged  ~5.5cc dish

install instructions :link

Wiseco -forged  

more info here: wiseco  ~16cc & ~6cc dish                            

Stock -cast  ~16cc dish

Clevite -cast  ~16cc dish

(notice the S in a shield logo)

ACL -cast  ~16cc dish

Federal-Mogul and Sealed Power  ( pics for these not yet posted, ck back later )