I wrote to the seller to ask the questions that were raised here. Here's my message and his response:
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How can these be high lift rockers?
The adjustable end, pushrod end, is closer to the fulcrum by appx. .120~in. providing greater intake lift as well as a faster rate of opening, increasing the lift by over 20%
Originally made by Stellings&Hellings for B&B automotive. Other companies also made high lift rockers (FENTON) Ect.
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I guess Atomarc is right, with stock push rods these rockers are closer to the rocker shaft and that is where the geometry changes.
'51 Chevy 1/2 ton w/'62 261, HEI, offy, fentons, dual carter/webbers, t-5 & 12 bolt posi
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