MS3 Cam Change Rockers??
The problem with the Cranes and HS's is that they're a bit heavy on the tip. We've seen valve float with the MS3 on stock 243 heads with each of these aftermarket rockers, and the problem was alleviated virtually every time by swapping back to a stock rocker. We also HIGHLY recommend the modification that Harland Sharp does to the stock rockers. They replace those pesky needle bearings with a sealed bearing, clean the rockers, etc. That keeps the lighter weight of the rocker, but with more durability in there! These typically run a bit quieter than the stockers as well! HS charges about $300 for this service, and it's worth every penny IMO! We run these in our racecar you see in my sig 
My 2nd choice would be YellaTerra ultralites, hands down.
My 2nd choice would be YellaTerra ultralites, hands down.
__________________
Largest Stocking Distributor of LS-x Engines / CHECK OUT OUR NEW WEBSITE!
COMP - FAST - PACESETTER - DIAMOND RACING - EAGLE SPECIALTY PRODUCTS - CALLIES - COMETIC GASKETS
RAM CLUTCHES - MOSER ENGINEERING - KOOK'S HEADERS - ARP - GM BOLTS AND GASKETS - MSD - NGK
POWERBOND - ASP - AND MORE!
Largest Stocking Distributor of LS-x Engines / CHECK OUT OUR NEW WEBSITE!
COMP - FAST - PACESETTER - DIAMOND RACING - EAGLE SPECIALTY PRODUCTS - CALLIES - COMETIC GASKETS
RAM CLUTCHES - MOSER ENGINEERING - KOOK'S HEADERS - ARP - GM BOLTS AND GASKETS - MSD - NGK
POWERBOND - ASP - AND MORE!
Trending Topics
The problem with the Cranes and HS's is that they're a bit heavy on the tip. We've seen valve float with the MS3 on stock 243 heads with each of these aftermarket rockers, and the problem was alleviated virtually every time by swapping back to a stock rocker. We also HIGHLY recommend the modification that Harland Sharp does to the stock rockers. They replace those pesky needle bearings with a sealed bearing, clean the rockers, etc. That keeps the lighter weight of the rocker, but with more durability in there! These typically run a bit quieter than the stockers as well! HS charges about $300 for this service, and it's worth every penny IMO! We run these in our racecar you see in my sig
My 2nd choice would be YellaTerra ultralites, hands down.
My 2nd choice would be YellaTerra ultralites, hands down.
LS1 Tech Stories
The Best V8 Stories One Small Block at Time
Gas Monkey Built a 6-Wheel Ferrari Testarossa With a Corvette LT4 Engine
Verdad Gallardo
7 Most Reliable High-Performance Engines GM Has Ever Built
Verdad Gallardo
Amazing '71 Camaro Restomod Is Modern Muscle Car Under the Skin
Verdad Gallardo
6 Common C5 Corvette Failures and What's Involved In Repairing Them
Pouria Savadkouei
Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph
Verdad Gallardo
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked
Pouria Savadkouei
Top 10 Most Powerful Chevy Trucks Ever Made!
Hennessey's New Supercharged Silverado ZR2 Has 700 HP
Verdad Gallardo
Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes
Verdad Gallardo We've tested with two different beehives and the PRC duals.
__________________
Largest Stocking Distributor of LS-x Engines / CHECK OUT OUR NEW WEBSITE!
COMP - FAST - PACESETTER - DIAMOND RACING - EAGLE SPECIALTY PRODUCTS - CALLIES - COMETIC GASKETS
RAM CLUTCHES - MOSER ENGINEERING - KOOK'S HEADERS - ARP - GM BOLTS AND GASKETS - MSD - NGK
POWERBOND - ASP - AND MORE!
Largest Stocking Distributor of LS-x Engines / CHECK OUT OUR NEW WEBSITE!
COMP - FAST - PACESETTER - DIAMOND RACING - EAGLE SPECIALTY PRODUCTS - CALLIES - COMETIC GASKETS
RAM CLUTCHES - MOSER ENGINEERING - KOOK'S HEADERS - ARP - GM BOLTS AND GASKETS - MSD - NGK
POWERBOND - ASP - AND MORE!
Duals did control it better....but in some instances, there was still float with the aftermarket rockers whereas the stocker or modified stockers did not have these issues.
__________________
Largest Stocking Distributor of LS-x Engines / CHECK OUT OUR NEW WEBSITE!
COMP - FAST - PACESETTER - DIAMOND RACING - EAGLE SPECIALTY PRODUCTS - CALLIES - COMETIC GASKETS
RAM CLUTCHES - MOSER ENGINEERING - KOOK'S HEADERS - ARP - GM BOLTS AND GASKETS - MSD - NGK
POWERBOND - ASP - AND MORE!
Largest Stocking Distributor of LS-x Engines / CHECK OUT OUR NEW WEBSITE!
COMP - FAST - PACESETTER - DIAMOND RACING - EAGLE SPECIALTY PRODUCTS - CALLIES - COMETIC GASKETS
RAM CLUTCHES - MOSER ENGINEERING - KOOK'S HEADERS - ARP - GM BOLTS AND GASKETS - MSD - NGK
POWERBOND - ASP - AND MORE!
Were the dual springs that your were using a "Low" or High" frequency spring, and what rpms where you guys expericing issues/float? I do agree that most 90% aftermarket rockers are heavy out over the nose.
Last edited by JPH; Feb 3, 2009 at 09:27 PM.
So then what is the best option for guys with aftermarket heads that want to avoid valve guide wear, but dont want to suffer valve float either?
I know this, my engine is solid roller, lol.
I was asking what would someone with a set of AFR or TFS heads use for roller rockers in a hydraulic engine setup that wanted to avoid valve guide wear and didnt want valve float from the heavy tip of aftermarket rocker arms.
I was asking what would someone with a set of AFR or TFS heads use for roller rockers in a hydraulic engine setup that wanted to avoid valve guide wear and didnt want valve float from the heavy tip of aftermarket rocker arms.
Aslong as you are running the correct valve springs for your application, and your geometry is correct, most aftermaket rockers you look at or choose should not run into any issues of float/harmonics or valve guide wear. I personally don't think people turn these motors hard enough to even worry about being to heavy over the nose.
