I am working on getting the car ready for a test drive but ran into a problem last night with the cooling. My engine is a 96 lt1 but my radiator is an aluminum Griffin for an 85 l98. The 96 car did not have a radiator cap on the radiator, instead it was on a tank up by the a/c blower motor. Since my donor car was wrecked I dont have all the original parts and hardware. I had to remove the gooseneck to get the engine block to fill but once it did everything seemed ok. Car ran for about thirty minutes, the t-stat cycled and I only have two codes, both for the fan relay. Is this going to work or will I have to find the original parts? Did this burp tank have something to do with the reverse cooling?