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unless a hardcore build with over .750 lift even factory none roller rockers can be used. I used narrow pads on a motor with a .720 lift cam for over 250 passes. never any problem. with a cost of 3500.00 it's overkill in 95% of time.
what about in a regularly street driven car where durability/low maintenance is also important.. ?
In that environment they are absolutly perfect to use.
They were good enough even for the first pro stock cars which revved as high as 9,000 rpm before any aftermarket ones were made.if they could stand 250 passes and 7700 rpm at the traps .
Should I chose to put a set on a motor I would consider having a used set reconditioned . Rocker Arm Specialists is the outfit that does the work.They will regrind the pads and remove any wear spots,check the bushings and replace if needed.
Dick Landy used to sell rockers that were black powered coated or plated to all the fuel guys. He would check them for proper ratio and clean them up removing any parting lines.I have seen those on many nostalgia builds. . I still have as set.
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