I have  a 5577.  They were sold as gaming laptops with more cooling vents in the case.  The 5567 does not have the case cooling vents and trying to transfer bigger components likely will fail.  Best to look into whether the screen from the 5567 will work in the 5577.  Or better yet just replace the screen. Dell Inspiron 15 (5577) LCD Screens | Dell Inspiron 15 (5577) Laptop Parts (parts-people.com)  
Hi guys, I have 2 dell laptops, one of them is Dell Inspiron 5577 i7-7700HQ with a broken display, the second one is Dell 5567 i5-7200U CPU 2.50GHz working. My question is, what can I transfer from dell-5577 to dell-5567 so that my dell-5567 becomes faster and cooler?
Сan i upgrade laptop parts Dell 5567 i5-7200U