Interesting topic for discussion....lots of varied opinions.
From my experience the Crane Gold rockers are fine with flat tappet cams and spring pressures under 400lbs....they will last for 50K miles.
The non rollerized fulcrum rockers don't fare so well with roller cam spring pressures....that means Comp/Crane/Indy etc.....so it really depends on the application and cam profile being used. Even the Comp stainless rockers that are bronze bushed (afterwards....they don't come that way stock) won't hold up to roller cam pressures and Comp doesn't recommend them for spring pressures exceeding 400 lbs.
I have yet to see a Harland sharp fail that was getting enough oil to the shaft....and some of those have years of abuse on street/strip builds. T&D is next up on the food chain in terms of rocker arm quality. Jesel should be considered a race only piece, inmo.
So, in a nutshell it boils down to picking the right part for the right application...nothing more.
CP ; are those B1BS heads ported ? As delivered they don't flow as well as a stock E-head but with a good CNC job and MW intake port window they will move a lot of air.
Here are the intake flow numbers off a friends bench...stock B1Bs as delivered from Koffels (standard port window)
66.3 (.100)
121.7 (.200)
167.1 (.300)
212.9 (.400)
254.5 (.500)
270.5 (.550)
284.9 (.600)
293.7 (.650)
293.7 (.700)
And for Comparison's sake....MY 84cc RPM heads with stage 1 mild port off the same bench :
71.6 (.100)
148.2 (.200)
212.2 (.300)
257.9 (.400)
283.6 (.500)
291.9 (.550)
295.7 (.600)
297.3 (.650)
300.9 (.700)
Comparing intake flow between these two castings it's obvious the mildly ported e-heads are far superior in terms of HP potential. Inmo that B1Bs head is not a 700 hp casting and for that matter neither is my RPM head. To make that kind of power it's gonna need a max wedge port window and ~350 cfm at max valve lift.
