I have a 1967 corvette 427, which is overheating. it has 11-1 pistons chevrolet alu .heads. Timing was set at 5* with no vac advance. I think I have series head gaskets. I have installed a 4 core alu. radiator with twin electric fans (3100cfms). (pulling thu rad). Also installed a high flow water pump. What is next?corvette_1.jpg
Geno