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Do you recall how the scrub distance/pattern looked with the Harland Sharps? Lash caps?

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I'd like to know, too. However, what seems typical of HS rockers on Edelbrock big-block heads is that their scrub pattern is heavily biased to the exhaust side of the valve tip. Even the Hughes stuff that has a shorter fulcrum-to-roller c/l distance than the HS still has a bit of an exhaust-side bias, but no where near as extreme.

I don't think that T&D had got it "nuts on", either, since their fulcrum-to-roller c/l spec for rockers used on Victor heads is 1.52, which is pretty close to what the Hughes are.

The rockers which IIRC actually showed the best scrub pattern on Edelbrock big-block heads were the Crane golds, which (I'd have to check my notes... somewhere) are about 1.48, but Crane never produced anything w/ the correct intake pushrod offset for the Victors. Also, Crane's have other issues IMO that make them less than ideal for this type of application. But perhaps that's just me...