anyone know the normal operating temp for a 327?

 

Anything probebly under 220. Best bet would be about 175-180

 

if it was in a third gen with all the thirdgen sensers then it'd be the same as a 305 or 350 in the same car. you really need to provide more details to get a reasonable answer.

 

no its in a 78 camaro just figured i would ask it here incase someone swapped one into their thirdgen, its pretty basic not to much done to it, called a parts store and they said the stock 327 thurmostat was a 195 so i guess that abut answers it thanks guys

 

195* thermostat will probably make it run about 210 or so... I would put a 180* thermostat in it.

But it should run no hotter than any other size small block.

 

The answer really is "What is the best temp to run an carbureted engine?"

Too hot is bad and made lead to fuel vaporization. Not good over 195 on a built engine. It might not recover from a hard run.

Too cold is bad as the fuel cannot atomize properly. (Most carbureted engines do not like anything below 180.

Ever notice that when the engine has warmed up, it is happy?

FI engines seem to be happy at 195.

The question is “how good is your cooling system”? A built engine with high compression and a long duration cam will surely raise heat. It is up to your cooling system to react to that and cool it down.

3 or 4 core radiator, flex fan or electric fans, 180 thermo, proper mix of coolant.

Remember the car motto "the weakest point will always break"

 

Power makes heat. How much power are you going to make?