What size should the overflow tank be.

[Flchallenger]

Doing a crate 6.4 hemi into 71 challenger. Overflow tank I have is a quart. I look on line and google says they very from 2.6 quarts to like 6.4 quarts. Depending on what it's in. Truck bigger one. What have others used? I am not sure a 1 quart size would work well.

 

[Xcudame]

I'm thinking a gallon (4 quarts) would be sufficient. Others will chime in.

 

[Katfish]

I used the factory truck part, I don't think 1 qt is enough.
I'd plan for at least 3 qts.

https://postimg.cc/DWSf1D3Y][/url]

 

[heminut]

If you're talking about the radiator overflow tank, I have a 1 quart with my 5.7 hemi. I live in the desert southwest and the 1 quart tank has always worked for me.