[grandville455]

Originally Posted by Skip Fix

Some in the past have said with "real" springs esp roller springs HS flex enogh to have the correct ratio listed. Mine never did and had 1.52ish for 1.5s and 1.7ish for the 1.65s even with roller springs 200+ seat.

I've got them on several motors a street motor with probably 20K miles on it.

Skip, U tested the lift with those springs installed , and not light checker springs? They still checked higher than the advertised ratio?

[Tom Vaught]

Darby, Harland Sharp rockers always seem to be a bit more rocker ratio vs advertised (even with strong springs). Not necessarily a bad thing except if you have limited clearance with your components.

Tom V.

[Steve C.]

In the link I previously posted here they tested 20 different rocker arms from all the popular manufactures in both aluminum and stainless. All of them were advertised as having a 1.6:1 ratio --- and exactly one of them multiplied the lobe lift of the cam to the valve accordingly. Only one ! They got ratios as high as 1.668, and the rest were about 1.65:1.

As far as the Harland Sharp Origional rocker advertised as 1.6 ratio, it measured 1.66


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