If you’re going to run two radiator caps, then the lower placed one should be a higher pressure rating than the upper one.  You want the one on top doing all the relieving.  The 1960 thru 1962 Ford cars equipped with Y’s used the expansion tanks.

Lorena, Texas (South of Waco)

I think you should be able to Greg as long as you have enough hood clearance. I know the reason they were used to begin with was because of the the radiators being so low in the cars, with the tank being placed a little higher up to eliminate any air pockets through gavity (air) pushing up to the highest point. I think it would look pretty cool being polished up,  I still have one laying around too that bolts directly to the thermostat housing for a F.E. powered car. I do recall seeing a few 61/62 car powered Y's with these put in. Don't know if it was factory or not.

Michael

Sandy Valley, NV

The 64 I parted out for my Uni had a new radiator - it's in the Uni of course. I have an expansion tank for a Y block car - can I use it with the truck radiator? Thought it might be cool in there polished. It will also be sort of in the way when I work on it though too - worth it?

1964 F 100 LWB Roller 5.0 & T-5

2001 Jeep Cherokee XJ

2009 Harley FXSTB Night Train



"I still have a Y block - it's just not in anything yet."