2007 Jeep Wrangler JK Build-Up 2007 Jeep Wrangler goes from Mild to Wild

The Engine is Here

We just received the engine last week. So far we have the engine, transmission, engine accessories and starter. The main thing we had to change was the flywheel. The stock flywheel on the crate 6.1 was a different pattern than the one for the 545RFE that we have. Our transmission is a used 5-45RFE out of a 2004 Ram 1500 4wd. We ordered a new flywheel for the 5.7L, which mated to the 6.1L just fine. The part number for the flywheel (flexplate) was 4736604AA, it has four holes for the torque converter at 3, 6, 9 and 12 o’clock positions.