JP67

hi ppl, i have a 351c and have a 3/8 hole in the back of each head to run a hose to the thermostat housing to circulate water and have drilled the front inlet manifold bolts with fittings in there also running to the t/housing ,but still runs hot .
i have just been told that i must run a expansion tank to release air pockets which i may have resulting in overheating like a ford eb water bottle filler if you guys know what i mean ,would this help? and do i just run the 2 from the head into the bottle ,and maybe the front 2 manifold bolts 2? i dont know?


is the reason for the bottle the radiator lower than engine,mine is fine but would this method im talking about get air pockets out my motor?maybe the technology of the new cars r the way 2 go?

thanks if anybody can share some info please,cheers