Beautiful engine, well done Mark! Wish you would share the internal mods and estimated torque and horsepower. I think the LS5 is a great torquey street engine. You always here about the LS6 which was awesome but higher compression and solid lifters made it a little less cruiser friendly.
I recommend that 7 blade fan and heavy duty fan clutch on all big blocks that have hi temperature readings. Seems to help. Most over heating issues are due to lack of air flow