1993 Force 50 Cylinder Head Compatible with 1985 Force 50 Cylinder head?

[bigred177]

I am looking at the two and they do look different, I was just wondering if they were the same where it mattered. Does anyone know what years are interchangeable?
Thanks

 

[Frank Acampora]

Re: 1993 Force 50 Cylinder Head Compatible with 1985 Force 50 Cylinder head?

You probably could use it. I think the bolt pattern is the same--- BUT---- The 1993 head is used on an engine with a 3.375 bore while the 1985 has a 3.3125 bore. Compression ratio will be lower if you swap the 93 head onto the 85 block. I'm not certain about the thermostat and water routing either.