Roller rocker question

[Kid_Again]

I am constantly amazed at how much experience some of you guys have...and how reluctant I am to change anything if I have the least little concern.

I just put a new ZZ454 crate engine into the '66. Nice performance. Apparantly I have this desire to make it "better" :eyerole

I have a set of roller rockers (Crane Gold Race, 1.7 ratio) that I would like to take off my old Mark IV heads and install on the new aluminum heads (they have the correct studs, I called Crane).

A buddy of mine who is technically competent (but perhaps still stuck in the '60s) says that adding RR's to a hydraulic cam (regardless of whether it's a roller cam or not) is a very bad idea because the bearings do not move enough, causing premature failure of the rockers. :confused


Now, why in the world would that be true? I've seen loads of aftermarket RR's for LS1/2 engines and they have hydraulic roller cams. I know I could ask Crane but I wonder about their biases.

What is your experience? Can you point me to any articles on the subject?

Thanks.

 

[66 Red Rocket]

Roller Rockers

I don't buy that. I have been running Crower roller rockers on a 502 for nine years and a lot of miles. It has a hyd roller and has given me no problem at all. John

 

[IH2LOSE]

Kid if you look at the brochure for the 454 425 motor witch I understand is the same as yours except it has less hp and cast iron heads.It shows roller rockers available for the motor


http://www.gmgoodwrench.com/perfparts/images/parts/pdf/12568774.pdf

 

[Kid_Again]

Many thanks!