what i have is an 84 z28 with a crate engine from blueprint engines: 383 stroker dynoed at 433HP. my situation is that i am using a stock 3 core radiator and it doesnt seem to be doing its job. summer is approaching here in the east and when im at a red light the temp wants to go past 180. i know thats not an issue but when i first installed the engine and radiator, it stayed at a cool 170 all day. not to mention that the radiator is leaking now. my question is, what kinda of core should i use? 3? 2? which radiator would you suggest?

 

I would suggest a heavy duty one like a BeCool, as well as a high cfm flowing electric fan (single or dual depending on CFMs) with a backup manual toggle switch