rocker arms
rocker arms im looking for a good set of strong rocker arms for my 2001 ls1 camaro and i was looking at the yella terra shaft mounted and the comp cams aluminum shaft mounted. is there any real advantage to having all the rockers mounted on a single shaft and are the comp cams ones really worth the extra money? also is it possible to adjust valve lash on either of these rocker arms?
Originally Posted by CamaroSS22
im looking for a good set of strong rocker arms for my 2001 ls1 camaro and i was looking at the yella terra shaft mounted and the comp cams aluminum shaft mounted. is there any real advantage to having all the rockers mounted on a single shaft and are the comp cams ones really worth the extra money? also is it possible to adjust valve lash on either of these rocker arms?
Its not that all rockers are mounted on a single shaft, it is the way the rockers are retained to the heads. Take one look at the yella terra style and the Jessel, Comp, or T&D and there is no comparison. The yella terras rely on a shaft and bolt for each pair and have individual pivot bearings. The others rely on a huge cradle that runs the entire length of the head which each pair of rockers pivoting on a shaft. The true shaft systems are lighter over the valve tip as well which is very important.
Originally Posted by CamaroSS22
im looking for a good set of strong rocker arms for my 2001 ls1 camaro and i was looking at the yella terra shaft mounted and the comp cams aluminum shaft mounted. is there any real advantage to having all the rockers mounted on a single shaft and are the comp cams ones really worth the extra money? also is it possible to adjust valve lash on either of these rocker arms?
TECH Apprentice
Joined: May 2002
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From: Leg Dist #31, WA
Originally Posted by gojo
Shaft mounted rockers reduce the problems pedestal mounted rollers can experience if the pedestals are not all exactly the same.
Any/all are better than stock.
That's a picture of my stock rocker. Notice the wear spot is off center. It probably is a good indication that pedestal roller rockers will be a problem. I had my stockers rebuilt by HS after I noted the wear on my HS RR's. They are a good alternative to shaft mounts.
TECH Resident
Joined: Dec 2004
Posts: 881
Likes: 1
The Yella Terras are an interesting setup. They pin the stud. So the roller is axially fixed. Like a shaft. A mini-shaft. No guideplates.
However, other than price, I would use a real shaft unless I was doing a budget setup. Then I would use a stock setup.
I believe stock setup would work with an XE-R or equivalent (Crane has equivalents) with aftermarket springs, lifters, timing chain, and pushrods. Less than $1000 total. Add in a set of headers with X-pipe ($1500-1800 on a Z06 with cats), LS1Edit, and that would be a budget setup. IMHO. Most people would add an intake and maybe an underdrive pulley to that.
If heads (say AFR205s), intake (FAST), 90mm tb, bigger injectors, are added, I would add the shafts also. And if the bottom end cam apart, shafts would be a small part of the budget.
However, other than price, I would use a real shaft unless I was doing a budget setup. Then I would use a stock setup.
I believe stock setup would work with an XE-R or equivalent (Crane has equivalents) with aftermarket springs, lifters, timing chain, and pushrods. Less than $1000 total. Add in a set of headers with X-pipe ($1500-1800 on a Z06 with cats), LS1Edit, and that would be a budget setup. IMHO. Most people would add an intake and maybe an underdrive pulley to that.
If heads (say AFR205s), intake (FAST), 90mm tb, bigger injectors, are added, I would add the shafts also. And if the bottom end cam apart, shafts would be a small part of the budget.
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Originally Posted by DavidNJ
If heads (say AFR205s), intake (FAST), 90mm tb, bigger injectors, are added, I would add the shafts also. And if the bottom end cam apart, shafts would be a small part of the budget.
DavidNJ, do you think the Jesel SS rockers would suffice for most applications or are you talking about the $1000+ shaft rockers?
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