Tell us what kind of Ford you are building.
but, we will help anyways.
To further the conversation, and discuss the limit of Production rules relative to radiators and air inlet systems, you need to look at one of the most successful Production/GC/ALT cars in recent years. Doll-Fox-Christopherson Camero. They made every record in every class they chose to run in, and did it with very sound physics and engineering. AND, an open mind.
Think charge air cooling. It does work for N/A as well as boosted motors.
Their Chebby used the production radiator, but not for cooling the engine. Ice water flowed thru the rad, and well sealed duct work provided cool, high pressure air to the carb inlet.
Engine cooling was performed with a tank in the rear of the car, and a really well thought out thermostat system.
I copied their system when I went to GC and Altered with the Merk and used a split radiator. one for air cooling and the other for engine cooling. Not as efficient as theirs, but it worked well for me. I rented a couple of records in F class.
I cannot find photos of their car #757, but here is the Merk.
The system is a little complex, but as you will find a car optomized for for Bville is completely unlike other venues, and does tend to be a little complex. That is part of the challenge. How to put 10 pounds of sh#* in a 2 pound bag. The pleasure and task of building the car to take the best advantage of the rules is half the battle and at least half the fun.
Good luck with your efforts
