You are right, the coating that is on there will not last very long before rusting.
There is two ways to fix the problem.
(1) sand the coating with 400 grit paper or a Scottbrite pad, wipe it clean with a wax or grease remover, and spray the fender with a good quality can paint, semi-gloss or flat black.
(2) Same as above on the sanding and wipping step, now spray the fender with a base coat black paint and clear coat the paint, using a flattner in the clear.

It all depends on what what equipment you have available.

 

What I like to use is Dupli-Color truck bedliner. It's lacquer based, dries quick, good texture and lays thick. Great insulation. Can be bought in spray can or gallons if you have your own applicator. Buy it a Wall-Mart. Best undercoat I have ever used..

 

scuff and shoot with a good epoxy primer like SPI

 

I used GM Reconditioning Black on the inside of the Fenders.

 

Thanks for all the ideas. I will definately paint the inside before the final installation.
Thanks again for the help.

 

It will rust back there just as fast if not faster. You need protection, use epoxy. I suggest 240 to tooth up real good then the epoxy, 2 coats. If possible use a hand held sand blaster and black magnum for tooth. A little overkill but wort it if you want it to last. Then 400 and a medium black like eastwood chassis black or a flattened eggshell black in base clear. I would stay away from enamel. Single stage urethane 60-70% gloss works good.

 

Paint always works well !:thumbsup:

 

That's a beauty Tom. The only thing that engine bay needs now is a big ole hog block sittin there.
Love the detailing.

RandyB

 

I had a BB in my 71 and this small block out performs it any day.

It has AFR heads and a 280 cam. It will smoke the tires into third without any problem.