Quote:
Originally Posted by Alan Roehrich
I do not agree. If you take an engine equipped with stock shaft rockers and large diameter lifters, and replace the stock shafts and rockers with 8620 or 8740 shafts and big roller rockers, you can EASILY exceed what can be achieved with stud mounted rockers and no stud girdle, even WITH roller rockers. Otherwise, there's be no market for stud girdles, and there'd be no shaft rocker conversions.
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Alan, there are only a few applications that use the shaft rockers: Mopars, Ford FE and Buick. The Mopars, both big block and small block, and the Ford FE's, are already running aftermarket adjustable iron rockers made by Isky or Crane. They are not stamped rockers like most OEM configuration. For Mopar applications, you can get a hard-chromed shaft, made of a heavier material that will not flex, at your local Mopar dealer over the counter. The Isky and Crane ductile iron rocker arms do not flex.
By the way, both the Mopar and Ford FE's, already have a big OEM lifters, and they also are fast.
