How hot does your small block run?
I installed the shroud and it helped a little.
The real test was the last few days in the 90's and being on the highway.
I checked it after getting off the highway and my temp lazer gun said 195 and then it moved up to 205 sitting in park running.
At one point by the looks of the gauge it hit about 210.
This was right after running it a little harder on a good stretch of road.
The stock gauge is 195 at the next to last line on my dash ,and about 205 at the last line.
Oh well,it's a little warm for me but did not over heat.
I always liked my cars to run no higher then 190 to 195.