Quote:
Originally Posted by trikkonceptz
If your goal is heating and not aero, consider using a flat piece of anything and experiment with different cut out sizes and block the radiator directly, from inside the engine bay. If you are looking for aero upgrades then follow the suggestions of our fellow members.
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I used a custom piece of cardboard
for years on a Chevette
in fact the same crappy piece of cardboard - for years
but it was for my warmth, not performance, worked great - covered about half the radiator
as for materials:
have you considered the 1/2" foam used in interlocking floor mats
they can be cut, sanded and painted as you like
they can be pressed in & pulled out of the grill easily
I used this kind of system to optimize my summer grill blocking