I would definitely go with the complete C7 radiator and fan setup if I were you. The 280Z's have a bit more room but I'm not sure what Z you've got. Hope that helpsĪs far as radiators go, if the dimensions are correct that C7 radiator should fit in your car. This all information based on using a electric fan with a aluminum radiator. Anyhow though, looking at the two radiators offered by Champion, I would think the 2 row would cool better than the 3 row using a electric fan. Now remember, both of the tube widths are much smaller than what would be in a single core radiator. If you look though, the 2 row cores have. On the 3 row core they say "cools up to 650hp!!". Anyway, on the 2 row core they claim "cools up to 400hp!". they have a 2 row core and a 3 row core radiator. Let's look at what Champion Radiators offers for my 78 280Z. Also, one the cooling air has gone past the first row in a radiator, it doesn't draw as much heat from the additional rows. Not only do they weigh more but for every row you add on a radiator the tubes get narrower. People like to fall into the "Bigger is better" mentality and go with bigger radiators. The wider tubes provide more surface area which results in better heat transfer and better cooling. Single core radiator also have wider tubes, usually 1"-1.25". With a single core radiator a electric fan can more easily draw air through the radiator. In most case a single core radiator is going to be better if you are using a electric fan. How times have changed!Īctually, pretty much all modern cars use single core radiators. These are single core radiators! Is it advisable to use a single core in the S30 chassis? Always thought the more cores the better in radiators.
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