Okay so download the Tunerpro program, Buy the ALDL cable, install cable and do some reading on the files? And yes its the 4L60E. and the cable I need to buy is the one at http://www.gearhead-efi.com/Fuel-Inj...uy-ALDL-Cables!. Now also with the cam grind am i correct by thinking the cam has to be ground down to fit in the 305 block? I was looking for a Crane 272 and it came up with results for a big block.