2010 cam crank sync

[enchanter]

Hope someone can help! Been working on these 6.0's a while and this one has me stumped. Replaced cam and lifters and front cover, now I have no cam-crank sync. ficm sync is ok. have replaced both sensors(cleaned mounting surface). Pulled trans and rear cover to verify cam timing, pulled oil pan and checked crank sensor wheel. checked signal to pcm with ids scope(looked good).replaced wire harness. replaced pcm and ficm with known good(work fleet service). still have no steady sync signal but ficm sync is yes! I think I covered all everything. Anybody got any Ideas?

[WEWILLE]

Did you solve this one yet? I had a similiar issue on a 08 6.4L... Did you monitor the cmp and ckp signals the way the PC/ED manual suggests? If so toss that out. Backprobe the pcm connector right at the pcm. Run the engine, brake torque it, turn on blower and high beams, etc. Monitor for any interference at all.