Paint it Black
 

Would it help if you paint the engine black, and if so what else could you paint black? (Now i've got this song my head do do do do do...)

I see a red door and I want it painted black.

The engine in my 86 chevy truck came black from the factory.

A black colored block helps to dissipate heat more evenly. But it also depends on what you're painting it with, as in what type of paint. They make paints that are available for radiators that don't inhibit the Heat transfer:
Eastwood Company

The short answer though is that the effect would be very minimal, probably not measurable against a control. But it sure would look nice.

i hear water helps dissipate heat too... i think your on to something...

i hear that if you use a black condom it looks invisible in the dark

Uh, in total darkness aren't all colors invisible?

It's better with the lights on, anyway.

Depends what they look like, I suppose. I like to joke that I'm glad I'm nearsighted rather than farsighted because I can always tell who I'm in bed with. My being a massive geek adds some irony to this as I'm hardly fighting women off. :)

if people call me a geek or a nerd these days i just say 'thanks. geeks make all the money'