Make sure the timing marks align first, on the crank damper and the camshaft to the 1st bearing. Then check the chain guides and then the tensioner. Chain stretch is usually not a problem with these engines because they are much shorter than the V-8's.

I posted a few pics when I did a valve job on my M103'd 300SE.

__________________
Regards

Warren

Currently 1965 220Sb, 2002 FORD Crown Vic Police Interceptor

Had 1965 220SEb, 1967 230S, 280SE 4.5, 300SE (W126), 420SEL

ENTER > = (HP RPN)

Not part of the in-crowd since 1952.