If you are using an oil cooler, the correct bypass must be used. Please use the directions below for selecting correct oil cooler bypass:
You have to measure the pressure drop between the outlet and inlet to know what your oil cooler setup is going to cause in reduction in oil pressure or how much static loss your system is going to give. That way you will pick out the right bypass that is slightly higher than your drop so that it isn't tripping all the time and bypassing the oil cooler all the time. But not too high that it won't bypass when the cooler clogs and starve the engine.
We recommend the following GM bypasses, select the correct PSI after measuring your pressure drop:
GM25013759 - 10 PSI
GM25013765 - 20 PSI
GM25161284 - 30 PSI
Need help with installing the bypass for your oil cooler? Click link below:
https://knowledgebase.blueprintengines.com/knowledge/how-do-i-properly-install-the-oil-cooler-bypass