I just installed a new aluminum Champion intake on my TA block (standard deck height) with TA heads. I am using 1200 gaskets and I am getting water in the oil (the old intake did not have this problem). On my second attempt I used black silcone around the water passages and still had water getting in the oil (with a light coating of silcone it seemed to have less water in the oil but I only ran the engine for a minute). I have checked for any pinholes in the casting but it seems to be OK. On the first install (only gasket cinch was used on the head side of the intake gasket) I checked the gasket after removal and did see an impression on the blue sealant around the water passages.Tonight I will try to bolt the intake to one of the heads (no gasket will be used) and take some feeler gauge measurements on the other side. This damm thing is driving me nuts as well as the local Autozone taking back the used oil!
Jeff
Jeff