So, I am a dipstick install away from firing my new 440 in the car. Of course, it's too tight(repop tube). The last thing I want to do is crack it obviously. I sanded the damn thing for an eternity today. Still super tight. I was just reading about people putting the tube in the freezer overnight to shrink the metal for an easier install. Has anyone successfully done this? Bad idea? Seems like it would shrink it but also make it brittle also. Thanks in advance for any help.
