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Discussion Starter #1
Would like to inquire about what theremostat to use for my 78 L48????? A 160 or 180??????

mk's78
 

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Install a 180.

Are you having cooling issues or just inquiring because of the multiple options?
 

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Discussion Starter #3
No cooling problems(yet), just inquiring about the options...


Would like to have engine warm up a little early in order to unload the auto choke sooner.

mk's78
 

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No cooling problems(yet), just inquiring about the options...


Would like to have engine warm up a little early in order to unload the auto choke sooner.

mk's78

Installing a 160 would actually prolong the engine warming process.

The 160 would open sooner, sending hot fluid through the radiator, which will cool the returning fluid. This will slow the heating of the engine.

Installing a 180 will mean the engine has to be at 180 before fluid starts flowing, and that's where the regulation starts.

If you want the engine to heat up faster, to a certain point, a higher temp T-stat would be the best option.
 

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The choke is adjustable & most of em could use a little tweak to suit how the car is used.

With the L48's low compression you do not want a 160 stat, those cylinders need heat to light off efficiently.

Does your 78 carb have 1 wire or 2 vacuum hoses going to the choke? If electric choke the actual engine temp isn't linked to unloading/pull off. Vacuum style is better at following actual engine temperature, and when working properly is the best cold weather choke ever made by GM.
 
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