How will big cam respond to boost?
Thread Starter
11 Second Club
iTrader: (14)
Joined: Nov 2004
Posts: 1,653
Likes: 1
From: Michigan (Macomb or Lansing)
How will big cam respond to boost? I have a torquer v3 in my car with all the supporting modifications.
231/234 .644/.598 111lsa. How would this cam respond to say 7-8 psi? I know that people generally like lower tame cams for turbos but I was just wondering exactly how it would go?
231/234 .644/.598 111lsa. How would this cam respond to say 7-8 psi? I know that people generally like lower tame cams for turbos but I was just wondering exactly how it would go?
TECH Addict
Joined: Jul 2005
Posts: 2,153
Likes: 3
Originally Posted by Chewy72SS
That cam has a bit more overlap than you would want for a turbo setup. It would run fine, you would just lose some power due to boost bleed-off. There are more "efficient" cams out there for turbos.
Originally Posted by engineermike
I don't think anyone has actually proven that. In every test I've seen, quite the opposite turned out to be true.
Since the wastegate will control the boost level that cam will dictate alot of airflow compared to a better turbo type of cam.You'll see what I mean if it was a supercharger with boost controlled by a belt. Stock cam with 8lb pulley would make 8 lbs of boost.With the cam listed above boost would probly be 1-2lbs with the same pulley.Power would be about the same but the stock cam will have more throttle response.
So,my answer is why not put in a better turbo friendly cam? You spend all the $$ on a turbo setup but want a bad cam for the application.
In the end the T3 just isn't efficient for a turbo compared to what is out there. TECH Addict
Joined: Jul 2005
Posts: 2,153
Likes: 3
Originally Posted by Slowhawk
Stock cam with 8lb pulley would make 8 lbs of boost.With the cam listed above boost would probly be 1-2lbs with the same pulley.Power would be about the same but the stock cam will have more throttle response.
Originally Posted by Slowhawk
So,my answer is why not put in a better turbo friendly cam? You spend all the $$ on a turbo setup but want a bad cam for the application.
Thread Starter
11 Second Club
iTrader: (14)
Joined: Nov 2004
Posts: 1,653
Likes: 1
From: Michigan (Macomb or Lansing)
Ok thanks for the info. I was just curious, this would be next winter's project if anything. I am into trying new stuff too so i might give it a shot and if i dont like it... pfft cam swaps easy and now that i got all the supporting stuff it wouldnt cost too much.
Trending Topics
Originally Posted by engineermike
That's not necessarly true. When you install a larger cam, it will make less boost, but more power. This has been proven many times. Now, with a turbo, you install a larger cam, then boost holds the same because the boost controller and wastegate automatically adjust. Then you make even more power.
Again, I don't think anyone has proven that his 231/234-111 is actually a bad cam.
Again, I don't think anyone has proven that his 231/234-111 is actually a bad cam.
In theory!
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
Originally Posted by engineermike
That's not necessarly true. When you install a larger cam, it will make less boost, but more power. This has been proven many times. Now, with a turbo, you install a larger cam, then boost holds the same because the boost controller and wastegate automatically adjust. Then you make even more power.
Again, I don't think anyone has proven that his 231/234-111 is actually a bad cam.
Again, I don't think anyone has proven that his 231/234-111 is actually a bad cam.
A more friendly boost Cam WILL make more midrange power than the cam listed.Will the cam listed work? Yes,any cam will pretty much work.
Do I have to prove it? No ,because I've already tested this stuff and proved to myself what I'm saying
I would only recommend the Cam above if the static compression is high.The lower DCR will benefit the boost.
TECH Addict
Joined: Jul 2005
Posts: 2,153
Likes: 3
Originally Posted by Slowhawk
. . .I ran a similar Cam on a blower car that was built NA,then added a blower.It made the same peak but lost midrange power with the low boost which the Cam bled off.
For a turbo car, in the tests I've seen, every time overlap is added, they make more power. Keep in mind that totally different things are going on during overlap with a blower and a turbo.
Mike
Run it and see what happens. I think some would say that the peak power will not be as strong but it will have strong midrange? Might also depend on where you shift it.
TECH Addict
Joined: Jul 2005
Posts: 2,153
Likes: 3
What convenient timing!
https://ls1tech.com/forums/forced-induction/678711-my-04-gto-76mm-set-up.html
346 LS1, 232/234-112 cam, 6 psi boost from a T76, ~640 rwhp.
https://ls1tech.com/forums/forced-induction/678711-my-04-gto-76mm-set-up.html
346 LS1, 232/234-112 cam, 6 psi boost from a T76, ~640 rwhp.
I responded to your post in internal engine. I would swap a cam out with a little higher LSA and even better yet, reverse split pattern! You want to bring the efficiency up as much as possible on that rig!
its not so much the lsa, but the actual amount of overlap that you need to look at. In addition, you have to also take into consideration the efficiency of a turbo setup. If youre getting huge backpressure readings the overlap may hurt you by having reversion.
Originally Posted by engineermike
What convenient timing!
https://ls1tech.com/forums/showthread.php?t=678711
346 LS1, 232/234-112 cam, 6 psi boost from a T76, ~640 rwhp.
https://ls1tech.com/forums/showthread.php?t=678711
346 LS1, 232/234-112 cam, 6 psi boost from a T76, ~640 rwhp.
I vote for using the cam.. also some of the best Ford turbo tuners use cams clost to this set up
would the larger cam(although possibly flowing the same amount of air, and making the same amount of power) at a lower "boost guage reading" help to reduce the chance of getting detonation? or is detonation more based solely on total airflow going through the engine and actual AFR?
The Torquer is not a good turbo cam due to overlap and reversion, remember exhaust is what drives turbos. That cam will work just fine with a blower though. I may be installing a procharger on my head/232/236 112 cammed car.
Originally Posted by half-n-half
would the larger cam(although possibly flowing the same amount of air, and making the same amount of power) at a lower "boost guage reading" help to reduce the chance of getting detonation? or is detonation more based solely on total airflow going through the engine and actual AFR?