We have been usingthem like popcorn--so far have done everything from swap them on a 440 with 509 hyd--wowzer--out of the box stamped rockers GREAT engine---- to some port work , 440 ,big hyd cam and an EASY 569HP first pull--full ported are showing better and better numbers as Larry zeros in on them--I have a set on a 511 right now that I just cleaned up on my back yard bench--street solid roller --will report as it moves along--not pulling every angle just tossing it together and see what happens--
So far with 1.5 PRW rockers and 3/8ths push rods I had them all clear on a street hyd roller unit--have Harlands on this 511 so we'll see soon as Smith gets the tubes here
