What limits RPM?
But it's pointless because you won't be making more power. HP levels with the stock cam falls off by 6000 rpms.
KW
Thread Starter
Launching!
Joined: Sep 2008
Posts: 222
Likes: 46
From: Dayton, OH
Yes, that cam is in.
Trunnion kit and springs. I did not have the cam and springs installed so I don't know what they are.
I have a set of Yella Terra Ultralite twin shaft rockers to install. If there is something else to improve the valve train I might do it when I change the rockers. I am thinking about having the heads ported but I will probably wait on that.
Trunnion kit and springs. I did not have the cam and springs installed so I don't know what they are.
I have a set of Yella Terra Ultralite twin shaft rockers to install. If there is something else to improve the valve train I might do it when I change the rockers. I am thinking about having the heads ported but I will probably wait on that.
Trending Topics
Yes, that cam is in.
Trunnion kit and springs. I did not have the cam and springs installed so I don't know what they are.
I have a set of Yella Terra Ultralite twin shaft rockers to install. If there is something else to improve the valve train I might do it when I change the rockers. I am thinking about having the heads ported but I will probably wait on that.
Trunnion kit and springs. I did not have the cam and springs installed so I don't know what they are.
I have a set of Yella Terra Ultralite twin shaft rockers to install. If there is something else to improve the valve train I might do it when I change the rockers. I am thinking about having the heads ported but I will probably wait on that.
Are you looking for a power goal, or do you just want to turn rpm regardless?
LS1 Tech Stories
The Best V8 Stories One Small Block at Time
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
Awesome K5 Blazer Restomod Comes With C7 Corvette Power
Verdad Gallardo
10 Camaros You Should Never Buy
10 LS Engine Myths That Refuse to Die
Verdad Gallardo Thread Starter
Launching!
Joined: Sep 2008
Posts: 222
Likes: 46
From: Dayton, OH
@Chev70elle
Thanks for the helpful reply.
The card for my cam is in post #5.
Not necessarily looking to make a specific number. As long as I am opening it up to replace the rockers I wanted to see if there was anything else I should do. I plan to rebuild the bottom end next year with forged internals and want the heads, valve train and intake to go with it. If there is something relatively easy to do while I am in there and it will let me spin the engine safely, higher or not, I may do it.
I didn't have the cam installed, bought it that way, so I don't know what the springs are. I assume they went with what Comp Cams recommended for that cam. I sent Comp Cams an email asking what the recommended spring rate would be.
I will port the intake and open the mouth to accommodate a Soler TB opened up to 102 mm and do the rod mod. I have a plan for reinforcing the intake manifold after removing the pillars since I am running a CSC.
I would not have know about the additional nose weight of the YT Ultralite rockers. It would never have occurred to me. Thanks!
How much additional spring rate is needed to compensate for that?
Thanks for the helpful reply.
The card for my cam is in post #5.
Not necessarily looking to make a specific number. As long as I am opening it up to replace the rockers I wanted to see if there was anything else I should do. I plan to rebuild the bottom end next year with forged internals and want the heads, valve train and intake to go with it. If there is something relatively easy to do while I am in there and it will let me spin the engine safely, higher or not, I may do it.
I didn't have the cam installed, bought it that way, so I don't know what the springs are. I assume they went with what Comp Cams recommended for that cam. I sent Comp Cams an email asking what the recommended spring rate would be.
I will port the intake and open the mouth to accommodate a Soler TB opened up to 102 mm and do the rod mod. I have a plan for reinforcing the intake manifold after removing the pillars since I am running a CSC.
I would not have know about the additional nose weight of the YT Ultralite rockers. It would never have occurred to me. Thanks!
How much additional spring rate is needed to compensate for that?
Are you planning on living at 7k, as in a mile event or similar, or just an occasional blast to 7k? The truth is, your stock bottom end is tough. Currently, the latest stock bottom end LS3 record is something well north of 8k, and iirc 825ish hp. So unless your building a land speed record type build, the forged bottom end isn’t really necessary. I can’t say I’ve ever seen a build that was built for rpm, without a certain hp goal.
Your in a pickle per say, not knowing what valve spring you have. Pull a cover and let us know if the springs are beehive or duals. If beehive, are they colored? If duals, maybe a name or part number on a retainer. Again, 7k isn’t crazy these days, just depends if you want to blip to 7k or live there.
Your in a pickle per say, not knowing what valve spring you have. Pull a cover and let us know if the springs are beehive or duals. If beehive, are they colored? If duals, maybe a name or part number on a retainer. Again, 7k isn’t crazy these days, just depends if you want to blip to 7k or live there.
I wouldn't call it a pickle, but I get what is being said. If it were mine, I'd just buy and swap the springs, retainers and keepers. The small cost of new springs and keepers vs possible trashing a LS3 is a no brainier. Besides, valve springs have a life span. They loose seat pressure and control after events. They are not as easily trashed as they once were, but on a track car, it's best practice to replace the springs every year or 2, depending on use, rpm ect. JMO
Thread Starter
Launching!
Joined: Sep 2008
Posts: 222
Likes: 46
From: Dayton, OH
I won't be living at 7k, probably not there very often. My avatar is from the previous owner. I am looking more for insurance, to know that I that I can turn it up with impunity if I want to.
825ish WHP? Not for me, not on a sbe. I want to build a forged bottom end but I don't what to have to build a forged bottom end. If I can run it a year or two on the sbe, that would be just fine.
I am hoping I can do as you say and identify the springs by sight. Worst case I can pull one and measure it. Might not be a bad idea anyway. I would rather wait until I get some head work done to the the spring and do valves at the same time.
Thanks @Che70velle ! and @rpturbo !
825ish WHP? Not for me, not on a sbe. I want to build a forged bottom end but I don't what to have to build a forged bottom end. If I can run it a year or two on the sbe, that would be just fine.
I am hoping I can do as you say and identify the springs by sight. Worst case I can pull one and measure it. Might not be a bad idea anyway. I would rather wait until I get some head work done to the the spring and do valves at the same time.
Thanks @Che70velle ! and @rpturbo !
TECH Enthusiast
Joined: Feb 2018
Posts: 640
Likes: 297
From: Michigan
There's no reason to build the bottom end unless you plan on spinning it to the moon, plan on adding a LOT of boost, or you want to increase displacement. From a reliability standpoint, all you need to spin to 7k is the right valve spring and you're set.
TECH Enthusiast
Joined: May 2008
Posts: 642
Likes: 572
From: Carnation, WA
I can't tell you how many people, even corporate managers haven't seen it. It should pretty much be required watching when you are hired.