Motor Question
 

I just recently purchased a 86 560sel. Very very clean vehicle. The motor has no compression at cylinder #5 and I was wandering if a 420 motor will swap easly with the 560 motor? Will there have to be new wiring harness or computer's needing replaced. If I can't get a motor for a resonable price, then I am left to just part the vehicle out. I hate to do that due to part it out since the vehicle is that clean. No rips in the leather or no rust on the body. Any help would be greatly appreciated!

Thanks

Is there anyone that can help me with this question of switching a 5.6l motor with 4.2l motor? Or know where I can get a 5.6l motor at a fair price? Thanks for any response.

why don't you pm david poole in tx.

he has some v8s lying about and would know the answer to your question, i am pretty sure.

tom w

thank you so much. I really appreciate the answer! I will try to pm him about my situation. Thanks a million!