[Lee]

I just did this update to my '78 sc. A couple of things to be aware of...If your 911 is pre-1980, you will need wider chain wheel supports than your car was issued. The parts are available through performance.

Also, when you replace the left cam housing cover, you'll find that two of the studs are not long enough. You'll have to back them out, and replace them. I had a time finding anything, and ended up cutting the heads off of bolts with a dremel to make new studs.

There are several very good posts about this in the archives, but you have to wade through some stuff. Make certain your chains are tight at the cam sprocket before you take off the tensioners.

Dan Crockett
'78 SC Targa