The Ford Barn

Unclebilly · 02-10-2026, 03:42 AM

I understand that the crank and pistons are different between the Ford 239 and the Merc 255 with the 4” sreoke. Are the rods the same or are they different too?

KiWinUS · 02-10-2026, 07:22 AM

Rods are the same for US made engines. Some of the French made engines used a shorter rod and a stock Ford piston on their 4 inch stroke crank engines but these are not very common.

Unclebilly · 02-10-2026, 08:39 AM

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Perfect. Thank you.

02-10-2026, 03:42 AM	#1
Unclebilly Junior Member Join Date: Nov 2025 Posts: 2	Merc 255 vs Ford 239 Rods Pistons Crank I understand that the crank and pistons are different between the Ford 239 and the Merc 255 with the 4” sreoke. Are the rods the same or are they different too?

02-10-2026, 07:22 AM	#2
KiWinUS Senior Member Join Date: May 2010 Location: Charlotte NC KiWi-L100 available here Posts: 3,416	Re: Merc 255 vs Ford 239 Rods Pistons Crank Rods are the same for US made engines. Some of the French made engines used a shorter rod and a stock Ford piston on their 4 inch stroke crank engines but these are not very common.

02-10-2026, 08:39 AM	#3
Unclebilly Junior Member Join Date: Nov 2025 Posts: 2	Re: Merc 255 vs Ford 239 Rods Pistons Crank Sponsored Links (Register now to hide all advertisements) Perfect. Thank you.