Rocker arm upgrade?
Thread Starter
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Joined: Aug 2005
Posts: 97
Likes: 0
Rocker arm upgrade?
I already have the h/c setup and was wondering if a rocker arm upgrade is feasible. Cam is 228/232 with 571 lift. Comp beehive 918 springs good to .600 lift. Are larger springs necessary and what about valve cover clearance, also will this thing need to get retuned? Any advice is much appreciated.
Racer
Joined: Nov 2006
Posts: 380
Likes: 1
From: Janesville Wisconsin
I wouldnt bother. You'll gain nothing at all except have more money into your car. Stock ones work good. 700+hp and mine are still going strong. 918s are not strong enough to even phaze a stock rocker.
Former Vendor
Joined: Feb 2004
Posts: 10,876
Likes: 8
From: Las Vegas NV
St. Jude Donor '06 & '12
There are more guys than not in the 750+rwhp range, and .600+ lift running stock rockers. Their one of the few things in our motor that are more than adequate. All you will be doing is spending money.
Team Owner
Joined: Mar 1999
Posts: 22,025
Likes: 192
From: At the beach in little Rhody
Mild voice of dissent here. 
Two things I like about some of the aftermarket rockers, one is the narrower wipe pattern and two is the stiffer rocker arm. Are there other places to get power, yes. I like them because I think in the loooonnnnggg run they will help reduce guide wear, especially with increased spring loads.
The new Scorpion's are supposed to produce a very narrow wipe pattern but I haven't seen any data on them. Also, someone on LS1tech did a back to back dyno with the Yella Terra's and picked up 5 hp. So from a power standpoint, I would base any decision on "I won't get any more hp from these but...."
I know a lot of guys won't agree with me though
Two things I like about some of the aftermarket rockers, one is the narrower wipe pattern and two is the stiffer rocker arm. Are there other places to get power, yes. I like them because I think in the loooonnnnggg run they will help reduce guide wear, especially with increased spring loads.
The new Scorpion's are supposed to produce a very narrow wipe pattern but I haven't seen any data on them. Also, someone on LS1tech did a back to back dyno with the Yella Terra's and picked up 5 hp. So from a power standpoint, I would base any decision on "I won't get any more hp from these but...."
I know a lot of guys won't agree with me though
Le Mans Master
Joined: Jun 2002
Posts: 8,352
Likes: 103
From: In the pit, trying to love someone.
Thanks for your assistance the other day!I actually bought some rockers from Jeff that I think would be a good upgrade for anyone using the stock rockers. You could send yours th Harland Sharp and get the old needle bearings removed, and get some new bearings with locking clips put in. The one bad thing about the stock rockers is they will occasionally puke the bearings out, and they get everywhere! The HS mod prevents this, so you don't have to worry about it ever happening!
Former Vendor
Joined: Feb 2004
Posts: 10,876
Likes: 8
From: Las Vegas NV
St. Jude Donor '06 & '12
No problem man..
Dont remind me that I wasted money by selling you my upgraded stockers and bought Yella Terra's. I HATE it when I dont listen to myself and waste money..
Dont remind me that I wasted money by selling you my upgraded stockers and bought Yella Terra's. I HATE it when I dont listen to myself and waste money..
Hey buddy Thanks for your assistance the other day!
I actually bought some rockers from Jeff that I think would be a good upgrade for anyone using the stock rockers. You could send yours th Harland Sharp and get the old needle bearings removed, and get some new bearings with locking clips put in. The one bad thing about the stock rockers is they will occasionally puke the bearings out, and they get everywhere! The HS mod prevents this, so you don't have to worry about it ever happening!
Thanks for your assistance the other day!I actually bought some rockers from Jeff that I think would be a good upgrade for anyone using the stock rockers. You could send yours th Harland Sharp and get the old needle bearings removed, and get some new bearings with locking clips put in. The one bad thing about the stock rockers is they will occasionally puke the bearings out, and they get everywhere! The HS mod prevents this, so you don't have to worry about it ever happening!
Le Mans Master
Joined: Aug 2003
Posts: 9,298
Likes: 4
From: American Canyon Lethal Injection
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Le Mans Master
Joined: Jun 2002
Posts: 8,352
Likes: 103
From: In the pit, trying to love someone.
Haven't touched em in a month, they're taking an oil bath with my new lifters. They started working on my new motor today, its coming with a build sheet this time
