The answer to your question is this OP. Will the air go through.. YES. Will it be hotter than usual? YES. The air flow will be significantly less because of the restriction from the radiator, however there is an answer to this. Just pick up a nice set of high static pressure fans... they will be able to move more air through the restrictive radiator.
Now the next problem is you will be warmer air blowing across your cpu, but as long as you are able to exhaust this air quickly you should still be ok. The biggest thing you need to make sure of is you have enough exhaust, because if you don't the warm air from the radiator will add to the head from your gpu creating a hotspot that will in return cause your gpu to be hotter than before. If you have enough air flow though then the impact of the warmer air will be minimal.