1989 420 SELTiming - HELP!
 

I just replaced the timing chain and upper rails. The only problem is, The timing is way off. While trying to sneak on the new one,by clamping it onto the old one using the master link that came with the new chain, we allowed it to slip a few teeth or so. My mechanic said that wasn't good. How in the world do you time the cam shafts now? There are no visable marks on the sprockets. Are the keyways supposed to be lined up with anything when I remove the sprockets?

My SEL has been sitting the driveway of my mechanics home for nearly 3 weeks now. It was supposed to be a 3 hour tour, I feel like Gilligan!

420 Timing
 

I read the information. I still don't see an answer as to how to re-time the cams, unless I missed it. I'll wait 'till noon taday before I subscribe to Pinedelski.com.

The reason you see no marks on the sprockets is the cam marks are not on the sprockets. Look at the camshafts and the first cam towers directly behind the sprockets. A line on the cam towers and a notch on the cam, different places on both sides but quite similar. The diagram herein that you were linked to is all the info you need.

Don't worry about the distributor sprocket, all it does is run the distributor, easy enough to pull the distributor and retime it if needed.