The Ford Barn

rotorwrench · 04-04-2021, 07:17 AM

I guess it depends on how high the crown of the dome is. All the Ford made 8BA pistons were domed originally. The Mercury and Ford pistons only differ by the piston pin location since they have the same con rods. The French made SUMB engines are the only exception to that rule that I'm aware of since they made a shorter con rod for their 255 CID engines.

There have been all sorts of aftermarket 8BA type pistons over the years depending on application and manufacturer. Some have a cone shape dome instead of a radius shaped dome and some were made on a different radius.

04-04-2021, 07:17 AM	#30
rotorwrench Senior Member Join Date: Jun 2010 Location: San Antonio, Texas Posts: 17,410	Re: 1cm I guess it depends on how high the crown of the dome is. All the Ford made 8BA pistons were domed originally. The Mercury and Ford pistons only differ by the piston pin location since they have the same con rods. The French made SUMB engines are the only exception to that rule that I'm aware of since they made a shorter con rod for their 255 CID engines. There have been all sorts of aftermarket 8BA type pistons over the years depending on application and manufacturer. Some have a cone shape dome instead of a radius shaped dome and some were made on a different radius.