Bought a 350 v8 4bolt. Just finishing the final touches. Gonna finally hear it start. Cross your fingers guys... Thanks

 

mechanic just installed my 350 on friday it wouldnt stop overheating after 20 mins of idling. he said it was the water pump so I changed out the water pump then he said radiator cap now he says its the radiator is there anyone out there that can help !!!!! Im wondering if he didnt install something right can it be there is a leak somewhere???

 

since i'm not sure of what was done to the motor befor install i'll do a run down of things it may be and how to check and replace

 

T-stat stuck shut, IHMO there so cheap just replace it and the gasket, just undo your upper rad hose undo the 2bolts and pull up on the housing, remobe old t-stat and clean off old gasket then put

 

new t-stat in put thin layer of your fav rtv(i use blue for coolant stuff) onto the gasket place gasket on put housing on and bolt it back down reconect your rad hose and your good to go

 

Lower Radiator Hose colapsing in on it's self(usually happens under throttle if it does), Old ones had springs in it to prevent this new ones don't always do, one way to check is looking at it if it

 

looks squished replace it and while at the parts store it looked like u can but the springs and stick it in there, also try reving it a bit to see if it colapses again replace if it does

 

Plugged radiator.. that kind of a a tough one for me to think of to test but hook both radiator hoses(make sure you have a bucket under) and take your garden hose and lett it run through it if it

 

isn't runnin out of it freely and backs up more than letting out it maybe plugged, makes for a good reason to upgrade to a 3or4 core aluminum radiator,

 

a 15-16psi radiator cap should be the norm for these engines. i would see what a '72 monte came with stock and use that.

do you have a heater core installed? it could be plugged...

plus check everything else budsjlm mentioned and you should find the problem. it's more than likely something simple.