Replace thremostat 1987 omc 5.4l v8 2550-gctid378626

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I have the thremostat houseing out- can i remove the old thremostat from the houseing or do i need a new houseing with a thremostat in it-

[Chief_Alen Guru Find all posts View Profile Close Chief_Alen]

Remove the old one from the housing and replace with the same.

[88fourwinns Guru Find all posts View Profile Close 88fourwinns]

The thermostat is held in the housing with a rubber ring that fits into a groove in the housing, you have to pry out the ring with a small screwdriver to get the stat out. The ring will probably be disguised with rust so scrape that off and you should see the ring.

[Download_Complete Admin Emeritus Find all posts View Profile Close Download_Complete]

kimeric wrote:
I have the thremostat houseing out- can i remove the old thremostat from the houseing or do i need a new houseing with a thremostat in it-

If you have a 2550, you do not have a 5.4L V8.

Might be important to know, based on what you are trying to do.

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The roller cover has 5.4l printed on it - how would i comfirm l?

[88fourwinns Guru Find all posts View Profile Close 88fourwinns]

can you post a pic, it should be either a 5.0, or a 5.7 Chevy. OMC did use some Ford engines, a 5.0 and 5.8. Never saw a 5.4 though.

[Download_Complete Admin Emeritus Find all posts View Profile Close Download_Complete]

Ford was well out of the marine market when the modular motors came online.

I am not aware of any Ford (save for the odd 460, but that was only in 1987) making it under the hood of a 2550. THey were all either 5.0s (YEEESH!!!) or 5.7L GMs.