Hi Guys, I just got my spiffy new Ford Motorsports chrome thermostat housing. I like the O-ring in place of the gasket. There is a recessed opening that I thought would hold the thermostat. Unfortunately, that opening is smaller than the port in the intake (i.e., the thermostat would not be pressed against the intake to hold it in place) and my old thermostat is actually larger than that recess. It almost covers the O-ring. Is there a trick to installing this or is there another sized thermostat that you use for this housing. (This is a 390 motor). thanks


Mike Panfeld
61 Sunliner (the crusier)
65 Convertible (the bruiser)

The old er FE's , 66 and older I believe, used the larger thermostat, You'll have to get the smaller thermostat and matching housing to fit it to your manifold. I just went thru this with my 428.