whats the best way to increase air flow to the radiator/engine with out doing the full lt1 to ls1 front end swap

 

LT1's generally run a little hotter than most people are used to, but to answer your question, niether the LS1 or LT1 take air from the grille area to cool the engine. The air is taken from under the bumper, check to make sure the air dam is still on your car, it's a black plastic piece similar to a spoiler under the front bumper that creates a high pressure area in front of the radiator and a low pressure area behind the radiator and your car will overheat without it.

 

My car runs between 165 and 170 degrees, even on the hottest desert day, idling in traffic doesn't even phase it now.

Thanks to Ion for my new MadZ28 tune, and my 160 thermostat. No more getting nervous watching the temp needle edge it's way to redline.

 

i still have my air dam but my temp gauge bounce's around like a crack addicted spastic spider monkey with add

 

than you have an air pocket if it moves all over the place really quick like. wait till it warms up than open up the bleeder screws to relieve the air.