35th T-bird SC
Registered User
I bought a Motorcraft thermostat with a blled valve in it a while back. part no. xf1e-8575-9a. It is 54 mm. It doesn't seem to fit right. It is supposed to lock in but it won't and it wobbles in the housing because it has this lobe on it keeping it from fitting right. I then bought a stant that napa said is for this car that fits perfect. It is also 54mm BUT it has no bleed hole. How important is the bleed hole. I don't have the old thermostat because I threw it out when I took it off thinking I'd never have to look at it again. The haynes is no help it just shows pictures of the na T-bird and the v-8. The motorcraft almost fits but it has the slight wobble and I'm scared it will leak if I use it. Can I just drill a hole in the stant one?