A simple test for your Superbird's air drawing efficiency,is with the engine running at idle, place a piece of what copy paper in the center of the grille, if it stays in place, your drawing enough air thru the grille, if the paper dose not remain in place and falls off, then start with the following:

The cooling needs of the wingcar are a little bit more involved, is the car fitted with a 26" radiator?, do you have a spring in the lower hose to keep it from collapsing at higher RPM's?, how many rows in the radiator?....are the upper and lower wingcar foam seals for the radiator in place?, what about the rubber air seals, all 10 of them, including the K frame seal, are they in place, and properly installed, as they create a funnel, or path way for the fan to draw air from the cone grille opening,...a shroud is a must, with at least 50% of the fan inside the opening,...if you have a flex fan, ditch it, clutch fans are useless as well, even the factory recalled early released 70 Bird models due to overheating, to be retrofitted with a solid blade fan, all further production models were solid blade fans,....a good antifreeze mix is ZEREX G-05,...50/50 mix with water, and 8-10oz of REDLINE WATER WETTER,....if your replaceing the radiator, I'd recommend a 5 row micro tube core,...



Mike