3 will work, I would not go any smaller then that. Are you running AC on your car? I'm running a 4 core on mine with out AC for extra cooling in the summer. $25 is a great deal, but I would have it pressured checked out by a radiator shop before I would buy it. The core could be about to break if it has not recored. The last thing you want to happen is blow a radiator and ruin an engine for $25 dollar part.
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Ray
1970 SS Chevelle Van Nuys Built
Last edited by shadowgray396; 01-31-2011 at 05:31 PM.
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