I did this on my car......I used aerosol degreaser then spent a long time at the car wash with the wand getting everything free of dirt and grease.
I removed all the accessories and brackets from the front of the engine....fan, pulleys, p/s pump alternator, fuel pump and fan shroud. I was changing the
water pump so I painted the new one on the workbench. To do a good job on the brackets, air cleaner, accessories etc. it is best to use a media blasting cabinet
to get all that stuff down to bare metal. On the fenderwells you will need to remove everything bolted to them or next to them like the voltage regulator, horn relay, vacuum reservoir etc., then wet sand the fenderwells and radiator support with 320 grit wet or dry sandpaper. be sure to use a tack rag on everything to get
off the lint before painting. Duplicolor Ford Black engine paint is an exact match to the original paint Flint used on the brackets , p/s pump air cleaner and fenderwells and it is very durable and sprays out smooth as glass if you are good with an aerosol can. If you are not experienced with aerosol painting I would
recommend practicing on something first till you figure it out. The best procedure with aerosols is one very light coat, wait 10 minutes and follow with a medium
heavy coat then wait ten minutes and apply a very wet coat but don't get carried away on the 3rd coat or you will get runs. When you are painting, keep plenty
of rags and B12 chemtool carburetor cleaner on hand to quickly wipe off all the paint on anything where you get runs in the paint. I painted my radiator and condensor in the car with excellent results. I did my whole engine compartment in a couple of days of work...probably about 12-14 hours altogether total.
The decal on the fan shroud, radiator, and side of the air cleaner are all reproduced, as is the aluminum pie pan on the air cleaner lid. There is only one source on the decal to replace the original white silk screening on the side of the air cleaner, and it is not CARS. I can't remember the name of the source off the top of my head but I can find it for you if you can't find it on the internet. Do not remove the intake manifold! Just remove the carburetor and plug wires and hoses and you can paint the engine just fine. Here are my before and after pics of my engine compartment......