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Old 05-23-2006, 08:14 AM
al37ford al37ford is offline
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The initial cost of a roller retrofit can be cheaper than the standard flat. After THREE wiped out camshafts, 2 Crane & a Comp, we bench broke in the FOURTH rebuild and found the lifters spun properly using stock chevy springs but going back to the stock Edelbrock the lifters did NOT spin which translates to a quick lobe wipe out! Several reasons found , including the new environmental oil composition but the main reason apparently was that the lifter bores were not perfectly square with the cam surfaces. Likely a bad run at the factory! Worked ok with stock stuff but NOT with higher performance. I haven't read it yet but am told the June issue of HotRod mag. has an article addressing same.
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