Painting aluminum block and heads (LS3). What to use?

[scherp69]

I've tried searching on several different forums, but there is not a whole lot of info on guys painting their LS engines. I want to paint mine while it's still clean. The two options that I'm looking at is either painting it with POR15 and then top coating it with their engine enamel paint. I've read lots of good reviews on the POR15 engine paint and have used their products quite a bit so I know what's required to make it stick. So far I'm really impressed with their stuff. The other option I'm looking at is using Duplicolor's engine primer followed up with their engine paint with ceramic. I want to paint it aluminum color to make it look stock, but to avoid any ugly oxidize build up.

What have you guys used to paint your aluminum motors and how has it stood up? If you did it again, would you use the same stuff?

Thanks in advance.

[almcbri]

I painted mine with duplicolor engine primer and paint.

[Merlin]

Heat dispersion ceramic coating to help shed away heat. I had an intake manifold coated with a black heat shedding coating. After an auto-x run, one could touch the intake as it would be cool to the touch.
This is what I used. http://www.techlinecoatings.com/arti...an_Article.htm

Cliff
369 CP Chevelle

[jeff s]

We've had success simply using a high quality enamel, like you'd use on the body of the car. The High-temp POR15 might be overkill since your block is already clean.

You should be more than fine with a nice high-temp enamel.

[onefast70elco]

i agree with jeff!

[John510]

Dupli-Color in a rattle can works good. Are you changing colors of the motor?