Roller rocker choice for HYD rollercam/for High Miles-Full life
:D
Hi Yellow Rose,
Thank you for your reply.
I have a complete unused Crane premium gold aluminum 1.6 rocker set from when I had my shop
14yrs ago. With there matched thick shafts and HD hold downs and studs.
So you think they will last 150,000 miles on a street hyd roller? This engine is going in my 76 Dodge truck to everyday drive and to tow my 69 big block Dart & enclosed trailer now and then over these mountain passes. The reason for the small Trick Flow heads/dual plain intake and
4.250 crankshaft. Also for the fun factor 98% of the time. I am 61 and can't stand a no power
truck let a lone car. Life is to short to drive anything good for the environment.:D:poke:
Any way, what is your opinion on the Crane gold aluminum rockers for this?
Thank you again,
Rick
If the geometry is right they will go a long way. The biggest rocker failure is from incorrect geometry. Simple as that. Second in line is not enough idle oil pressure. Anything below 35 pounds at a hot idle will almost guarantee the rocker will grab the shaft.
I’ve seen the best of rockers break in short order because the geometry was off. That’s why I said to contact Mike at B3. He can set you up with a geometry correction kit that works.
IIRC he can even Bush those rockers (which is what I’m going to have him do as I have the MP aluminum rockers which are the same as the Crane rocker) and I’m going to have him convert them to a cup adjuster. The geometry is a bit better with the cup adjusters.
FWIW, for my entire life I’ve said a steel rocker is better than an aluminum rocker. The problem is the junk **** Chevrolet “racing engine” is such steaming pile of crap with its cheap assed stud mounted rockers, and because it’s so much cheaper to use aluminum the whole aftermarket world, thanks to brilliant marketing was sold the aluminum rocker. It was a cheap fix for a piece of **** design.
You rarely see stud mounted rockers on a Chevy any more. It took 4 decades for the GM crowd to wake up but any decent GM engine is running shaft mount rockers. And some of the best “minds” in the business spent many thousands of dollars (or more) converting Chrysler stuff to ball/stud rockers.
I know there was a ball/stud 383 and IIRC a ball/stud hemi. They conveniently love to forget that sad history in trying to prove GM had a better idea. Even the highly respected Smokey Yunick said the SBC was a “relatively reliable high speed turtle”. Literally hundreds of thousands of R&D hours and tens of millions of R&D dollars later and they use shaft rockers.
Ok, my rant for the day is done.