During my installation of a DR650 cam, I was able to check the timing of the stock LS650 cam again using the head cover and rocker arms.  With that setup, I could more accurately position the dial indicator, and I did not have to fight the valve springs and alternator magnets, which tend to make the engine auto-rotate.  So I am correcting the timing data  I previously posted.  This data is certainly more accurate.


@.040" lift

IO: 10 ATC
IC: 52 ABC
Duration: 222 degrees
Max lift: .345"
TDC lift: .000"

EO: 42 BBC
EC: 4 BTC
Duration: 218 degrees
Max lift: .342"
TDC lift: .042"

@ .050" lift

IO: 14 ATC
IC: 48 ABC
Duration 214 degrees
Max lift: .345"
TDC lift: .000"

EO: 38 BBC
EC: 8 BTC
Duration: 210 degrees
Max lift: .342"
TDC lift: .042"