[fbd73]

Hi All,
I have a 1973 Firebird Formula 350. About 3 years ago I installed a 3 core aluminium radiator from Ledfoot Racing. We also installed twin electric fans and have had no overheating or cooling issues since.
Now to the problem. A couple of weeks ago, I took the car out for an afternoon cruise. No problems. 24 hours later I went into the garage and noticed a pool of coolant on the garage floor. On inspection it was coming from the water pump. I went to take off the radiator cap and coolant sprayed all over the inner and outer fenders. The cooling system still had pressure after 24 hours. I have never heard of that happening. I have since replaced the water pump but the system holding pressure has not been solved.

What are your thoughts as to why this could have occurred?