Intake manifold paint temp requirements?

[Timothy B.]

Before I install my L79 intake, I am in the process of cleaning it up. I am probably going to paint it aluminum cast color, and I can use one of several different types of paint. Question is, since the exhaust gas passes through the manifold for warm up purposes, does that mean I have to use a paint capable of exhaust gas temps good to 1400 deg F, or is regular engine finish OK for the manifold? I have a can of Aluminum cast finish that matches nicely the color of the natural intake, but it says it is good to 500 deg. F and "resistant" to solvents, gas, oil, etc. I have seen Hi temp aluminum paints that you have to cure in the oven. Which should I use so that the paint holds up in the hot areas where the exhaust gases pass? Your experiences would be appreciated.

[Joe L.]

Re: Intake manifold paint temp requirements?

Tim------

If you want the paint to hold up in the exhaust crossover area, then you're going to have to use the very high temperature paint. Even using that, I would not be surprised if it discolored after awhile in the exhaust crossover area. Even bare aluminum will discolor in this area.

[kelly theaker]

Re: Intake manifold paint temp requirements?

use a good quality urethane and do not put it on heavy just cover it and you will find good results. remember not heavy