250 heads?

[Salty Dog]

I have a 91 250 with a bad cylinder and picked up a 93 powerhead to put on. The heads on my 91 were newer and I would like to use them.

The 91 has the thermo switches in the heads and the 93 has the thermo switches in the t-stat covers.

Which ones should I use? How do I block off the unused ones?

Thanks

[boats.net]

Install them in block and you don't have to block off holes in head they don't go into water jacket.

[Salty Dog]

Thanks

Can you think of anything on these motors that is not interchangeable?

[boats.net]

I don't recall any.