Yes, needed in both heads and are quite necessary. My favorite thermostats are from a subaru justy. I have used them in 59ab and 8ba with great success. There are a few tricks for keeping them in place within the hose, such as a small wire or in my case a smaller piece of hose just above the thermostats. Some people use two hose clamps. Not really sure how Ford secured them, but I think originals were a different configuration. I'm hoping someone chimes in with the part # for those thermostats.
Yes, needed in both heads and are quite necessary. My favorite thermostats are from a subaru justy. I have used them in 59ab and 8ba with great success. There are a few tricks for keeping them in place within the hose, such as a small wire or in my case a smaller piece of hose just above the thermostats. Some people use two hose clamps. Not really sure how Ford secured them, but I think originals were a different configuration. I'm hoping someone chimes in with the part # for those thermostats.
tig weld them to a short bit of ss tube then push it up the hose,
Lawrie
Or try these $7 each on Rock Auto https://www.rockauto.com/en/catalog...cid+v6,1249208,cooling+system,thermostat,2200
Or try these $7 each on Rock Auto https://www.rockauto.com/en/catalog...cid+v6,1249208,cooling+system,thermostat,2200
Can't see them flipping over sideways with that solid wire loop.