Thermostat for 440

[Fern]

I replaced the thermostat in the engine with a Stant 180*.
Worked fine for 2 runs then stopped opening.
Is there a better one?

[dodj]

I recommend a 190-195* stat, and I buy them from Mopar.  Never had good luck with aftermarket stats.

[Chryco Psycho]

Stant is one of the better products but everyone has a bad day !

[Fern]

Is it rare for these to fail?. I'm wondering if I drill a 1/16" hole in it if it will work better. Read it from other posts.
Maybe just had an air bubble? Never had this issue before.

[RUNCHARGER]

Most likely bad. You can test it on your kitchen stove in boiling water. I would just buy another one.

[anlauto]

Most likely bad. You can test it on your kitchen stove in boiling water. I would just buy another one.

Didn't we learn that in Grade Nine Auto class ? 

[Fern]

Didn't we learn that in Grade Nine Auto class ? 
[/quote]

Never went to grade none auto class. Wish I did now.

I will get another one, strange for it to work sometimes and not other times.

[JonH]

What do you mean stopped working? Very easy to test...my bet would be a different issue