solid roller vs HYD roller cams
Thread Starter
Banned
Joined: Jan 2011
Posts: 78
Likes: 0
From: Florida
solid roller vs HYD roller cams whats the difference between hydrolic and solid cams....what does it take to switch too a solid roller cam setup in a LT1....any power and drivability differences...whats better out of the two thanks
Short version: A solid roller valvetrain uses solid (go figure) lifters and is capable of spinning much higher than a hydraulic roller. They are also set up by checking lash, while a HR uses preload. SR valvetrains are extremely rigid and for that reason are the choice for high HP/RPM builds and can support some massive camshaft profiles. A SR valvetrain has more up-front cost than a HR, simply because the parts are more expensive.
But hydraulic roller technology has taken some pretty big advances over the past 15 years, and HR valvetrains are spinning higher and higher.
Do a Google search if you need more info.
But hydraulic roller technology has taken some pretty big advances over the past 15 years, and HR valvetrains are spinning higher and higher.
Do a Google search if you need more info.
Better out of the two is down to what engine there going into. one used for racing only or daily driving ? HR lifters are all you should ever really need unless you have an engine spinning to 8k rpm
A mechanical lifter will not have any give at high rpm. theyre also noisier then HR lifters..
Better out of the two is down to what engine there going into. one used for racing only or daily driving ? HR lifters are all you should ever really need unless you have an engine spinning to 8k rpm
Better out of the two is down to what engine there going into. one used for racing only or daily driving ? HR lifters are all you should ever really need unless you have an engine spinning to 8k rpm
IMO, no. There are a few builds pushing close the 7k limit with HRs without a problem, myself included. I doubt there would be any significant benefit by converting to SR.
I know 94Z28Rag's build is still a HR, and that's an AI-headed 396 with a MASSIVE HR cam, still on the stock PCM and opti.
Now if I was regularly pushing 7500+ with a FAST/MoTec/Megasquirt/whatever that would be a different story.
I know 94Z28Rag's build is still a HR, and that's an AI-headed 396 with a MASSIVE HR cam, still on the stock PCM and opti.
Now if I was regularly pushing 7500+ with a FAST/MoTec/Megasquirt/whatever that would be a different story.
Trending Topics
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
SR also lets you run higher duration and maintain similar tune-ability and drivability then an HR cam. There is a popular trend of running "Street Rollers", fairly modest solid roller cams, in street/strip cars that are often the same or smaller then some of the racier HR grinds.
+1
SR also lets you run higher duration and maintain similar tune-ability and drivability then an HR cam. There is a popular trend of running "Street Rollers", fairly modest solid roller cams, in street/strip cars that are often the same or smaller then some of the racier HR grinds.
SR also lets you run higher duration and maintain similar tune-ability and drivability then an HR cam. There is a popular trend of running "Street Rollers", fairly modest solid roller cams, in street/strip cars that are often the same or smaller then some of the racier HR grinds.
Unfortunately, my shortblock **** the bed before I got any track times. So I don't have any solid proof of exactly how much quicker it was.
I'm currently building a larger motor now, and sticking with the SR
Still here running the ol' stock bottom end. And yes, with a solid roller and the stock ecu. The duration of the cam is pretty mild, IMO. I can tell you that, when it will be time for a new build, it will be a solid roller as well. I love it!
The SR that was in my 350 was pretty mild, the spring seat pressure was only 240#, and it felt a ton faster than the same shortblock when it had a LE3 hyd roller. My LE3 HR had more seat to seat duration than the SR, but the SR had 12* more duration @.050 on the intake side and 19* more duration on the exhaust @.050
Unfortunately, my shortblock **** the bed before I got any track times. So I don't have any solid proof of exactly how much quicker it was.
I'm currently building a larger motor now, and sticking with the SR
Unfortunately, my shortblock **** the bed before I got any track times. So I don't have any solid proof of exactly how much quicker it was.
I'm currently building a larger motor now, and sticking with the SR
.From my talks with Llyod it looks like my cam will be one with 260# seat and 600-650# open.
Can't skimp on the valvetrain at all! If you wanna run a decent SR be prepared to spend quite a bit more on lifters, pushrods, and springs then what you are used to with an HR setup.
There's no reason not to go solid roller for any build unless you don't feel like checking the lash every 3-5k miles. Pretty impressive torque and hp for a 355. Not sure if he made anymore power before he switched to the fast ecu.
It will make more power throughout the whole rpm band not just in the upper part of the powerband.
It will make more power throughout the whole rpm band not just in the upper part of the powerband.
Hmmm damn more to think about
before I pull the trigger on the HR cam although theres guys like Larry aka LS1speed flyin on HR cams. I think Badhawk made like 477rwhp with a HR cam. Tough call since I already have everything but the cam for a HR set up.
before I pull the trigger on the HR cam although theres guys like Larry aka LS1speed flyin on HR cams. I think Badhawk made like 477rwhp with a HR cam. Tough call since I already have everything but the cam for a HR set up. One thing thats nice is that you dont have to worry about weak plungers
Bolo, do you street drive your car ? I DD my car, and now im wondering if mechanical rollers wouldnt be to bad.
Bolo, do you street drive your car ? I DD my car, and now im wondering if mechanical rollers wouldnt be to bad.
The biggest thing IMO is the SR lifters, you better get HIPPOs (oil pressure fed) or you're in trouble if you DD your car because sbc motors rely on splash oiling at low rpms and in DD applications at idle and low speed (stop and go rush hour traffic) you'll end up killing lifters and wiping the cam and then well you know the rest, engine rebuild time.