Originally Posted By Cab_Burge
The SB Chevy where the first to need and use a stud girdle due to the severe flexing of the individual studs walking around with race springs and high RPM, not good down work
The paired shaft or individual shaft rockers used today are way better for racing, especially high RPM, with high (above 700 Lbs.) spring pressures opened use today up scope


I agree with all the above iagree .
However I have built several Chevy's with the inferior valve train whiney and some go relatively well, and sing a pretty high song whistling .
How ever you are correct beer the higher end stuff that I have built ( Big Duke/Chief) has individual shaft rockers.
My main reason for asking was I wonder how many more sets would sell boogie if in fact you could run 300$ set of Harland Sharp's or the like.
While very nice and top of the line the bill for those rockers had to be quite substantial eek up