I aquired a quadrajet yesterday that I am going to rebuild and I need help decodeing it. The casting number on the driver side secondary is 7043202. From looking online I got a 1973 Chevy or GMC; 49-state emissions;and Automatic transmission. I was told it came off a corvette big block. I gor it bolted to cast iron big block intake that looks taller than normal. I am guessing that It probley went on a few different motors since being new. EDIT: I have checked a few different places, and it looks like I am correct. So, I am going to dismantle this thing soon and I would like some good ideas to make it 4x4 capable. I am running a mild 350 with stock 1.94" heads and a mild cam. I don't know the cams specs, but I may change it in the future.