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I have just pull a set of PCE261.1246 Speedmaster procomp ls2-3 Shaft Mount 1.7 ratio black Aluminum rocker arm set after one broke less than 2000klm with pac1208 valve springs and 130lb seat pressure.
5 sets of rockers had there needle roller cages worn through the edges exposing the needle rollers and 4 had the rocker retaining circlips wearing into the rockers making metal.
This could have been messy BEWARE!!!!
Procomp equals procrap, offshore junk made from inferior alloys with varying tolerances. The old adage " you get what you pay for " goes a long way in explaining why you experienced the damage you did. Buy American made products, pay the price, and sleep good at night.
I had the exact same ones on my freshly rebuilt l77 6.0 (my first rebuild omo) but less then 300 miles, and a winter of sitting I'm driving along and tap tap tap tap I'm thinking the worse but it wasn't what I was thinking no lifter or piston damage but it put the car down another 4 months at the beginning of what was gonna be its first full season
Speedmaster Procomp shaft mount rockers
