I purchased this car about a year ago with full intentions to drop a V8 in it. The car had 160,xxx miles when I got it and did not run. I narrowed the problem to a weak spark, and a $20 distributor rotor got it running. I also replaced the alternator. So I’m in the car for $800 total including the oil and all the filters being changed. I’m at 165,xxx now and it’s running good, but the crank pulley is ready to implode I think. It’s separating from the balancer and howls at idle.
I am going to drop a 6.0 from a 99 gmc 2500 and I will use a 4l80e. I’ve been playing with the PCM, I’ve successfully pulled the bin file from it and have been able to make the changes to get it into the car.
I’ve started this thread because I haven’t crossed any success stories on the later xj40s. I also would like to have it for questions I will have for you all. It will be a slow process but I will post pictures as I go. The car is currently still on the road and I drive it daily.