Best thermostat out there

Hey gang..
Question, what are ya'lls experience with quality thermostats? I was running the Hemi in the Daytona this weekend and the dang new thermostat didn't open and the car got to 250 real quick... Freaked me out a wee bit. Got her back in the garage with now harm I believe, just some steam out the radiator.... But, I will replace the thermostat, but want to put a good performer in there this time..

IIRC I used a super stat from Summit.I believe its a Moroso.Been in at least 15 years and no problems.Rocky

You just run into a bad one. Get another name brand (Stant etc) & work the plunger several times to make sure it is free then suspend it in a pot of water & bring it to just below boiling & confirm that it opens. Best would be to use a candy thermometer to confirm it opens within ~5 deg of it's rated temp. A Moroso racing stat might be a better choice yet. No Robertshaw, when it came out it was touted as a trick piece (not sure what the trick was, maybe it opened further) but my parts man couldn't believe the # of comebacks they had with em

I run the Milodon 16406 180 degree in most of my toys big and smblk



Summit carries it for about $20

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Hey gang..
Question, what are ya'lls experience with quality thermostats? I was running the Hemi in the Daytona this weekend and the dang new thermostat didn't open and the car got to 250 real quick... Freaked me out a wee bit. Got her back in the garage with now harm I believe, just some steam out the radiator.... But, I will replace the thermostat, but want to put a good performer in there this time..

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If I send you the correct O.E.M would that make your day ?