It's a stock exhaust fan from an older dart. I made sure it was the same direction.
My guess is the block is heat soaking a lot more than the hose, which will cause it to be slightly different. I also ran my garden hose through the radiator and it appeared to flow well. Looking at the temp of the lower hose shows that it is cooling fine, but that doesn't prove that it's flowing fine.
Keep in mind, this is the 2nd radiator Ive tried and have the same issues, first one "seems" to flow fine with the garden hose as well.
