I have an 87 gta minus engine... I got a hold of a 76 350 thats been bored .60 over. plans are to carb it. I have the factory radiator and the fatory dual electric fans. I've been told that theres NO way that the stock cooling system is going to keep the engine cool. I was thinking of opening up the rear vents on the 4 vent hood to let some heat out.
Is it true that the stock radiator and fans won't be enough?

 

you have the cooling system already so dump the engine in it and fire it up. if it gets too hot shut if down and get a bigger aluminum radiator. what can be the harm?

 

just trying to plan things out accordingly. I still have to build the engine and get a trans before I can dump it in there. LOL just trying to figure out what to expect

 

Stock cooling system has been more than enough for my build.Its not a full on race engine but it stays 180-190* even in the hot MS summer time.I was told the same thing when I went to a 350.I just make sure it stays clean and run a 160 stat.My fans do stay on all the time for some reason.One of these days I`ll figure out why and fix it but I dont think it`s that big of a deal.Unless your going to have a radical set up I think you should be fine.

 

thanks grady. I was having trouble understanding what the problem would be myself, didnt know if maybe the headers would let more heat into the engine bay. I figured since the car was a 350 from the factory, that the radiator would be fine for a 350, but a couple people told me because the 350 I'm going to use is bored .60 over that it will get too hot and I'll need a bigger radiator... But then again, I hear a LOT of things that don't make sense, LOL

 

Its possible being bored may bring your temps up but Id just stick it in and see.Radiator easy enough to change.

 

coat the headers inside & out to keep temps lower