Turbo cam gurus please answer
12-26-2012, 08:54 PM
#1
On The Tree
Thread Starter
iTrader: (8)
Join Date: Sep 2007
Location: Sioux City, IA
Posts: 121
Likes: 0
Received 0 Likes
on
0 Posts
Turbo cam gurus please answer I could not find a clear cut answer. Is there anyway i can run a lopey cam with boost? I see alot of mixed answers in my search especially when it comes to split/reverse/single pattern cams. I will be running manifolds but i really want a lopey cam. It doesnt have to be ms4/trex lope... but i do want it to thump.
12-26-2012, 09:11 PM
#3
Don't have to be a cam guru to know that the answer to your question is yes. What cam you should run is another issue altogether. What is your setup? What turbo? There's more to it than "cam for a turbo." The cam that was just specced for me will have a pretty decent lope.
12-26-2012, 09:39 PM
#4
follow this link. download the file and fill out the form and send it back to martin at tick preformance.
http://www.tickperformance.com/tick-...l-lsx-engines/
http://www.tickperformance.com/tick-...l-lsx-engines/
12-27-2012, 07:21 AM
#7
On The Tree
Thread Starter
iTrader: (8)
Join Date: Sep 2007
Location: Sioux City, IA
Posts: 121
Likes: 0
Received 0 Likes
on
0 Posts
Everywhere i have read and people i talked to said lopey cams lose power on turbo. I've read ls6/ls9 or similar cam with high lsa is what you want to make good power. I have only found one guy one here that had a big cam with turbo with good power and that was NINETRES.
As far as setup the basics are c6 passenger manifold, with flipped truck on the driverside, 2.5" crossover T4 , PT7675, 4" downpipe and i will be running it on a 5.3 with 9.9:1 compression with E85. Here is where i saw NINETRES post
I guess the real question i should be asking is not can i run one. Rather am i really going to be losing power compared to the smoother cams for boost?
As far as setup the basics are c6 passenger manifold, with flipped truck on the driverside, 2.5" crossover T4 , PT7675, 4" downpipe and i will be running it on a 5.3 with 9.9:1 compression with E85. Here is where i saw NINETRES post
I guess the real question i should be asking is not can i run one. Rather am i really going to be losing power compared to the smoother cams for boost?
Trending Topics
12-27-2012, 08:06 AM
#8
No, you wont be losing power. A turbo cam is not necessarily a smooth cam. The cam I was recently specced is a 227/235 on 113+4. That cam will have a decent amount of thump. It just depends on the combination.
That is flat out wrong.
That is flat out wrong.
12-27-2012, 09:56 AM
#10
On The Tree
Thread Starter
iTrader: (8)
Join Date: Sep 2007
Location: Sioux City, IA
Posts: 121
Likes: 0
Received 0 Likes
on
0 Posts
Well it sounds like my questions have been answered. When the time comes i'll probably go with tick as the threads i've seen about them sound good. They sound knowledgeable and know what they are doing with their cams. Thanks for the replies guys.
12-27-2012, 10:06 AM
#11
12-27-2012, 10:38 PM
#13
TECH Regular
iTrader: (2)
Join Date: Mar 2010
Location: Wood river IL
Posts: 423
Likes: 0
Received 0 Likes
on
0 Posts
Martin at tick was AWESOME to deal with. He seemed very knowledgable, answered all my questions and just pleasant to talk to. I'm glad I went through him on my custom cam.
12-27-2012, 11:19 PM
#14
LOL Arun thats pretty funny.
Bluefire... its overlap that causes the chop for the most part... Problem is... in order to put overlap in the cam and it not be detrimental to the motor... you have to have plenty of turbine. Too much overlap coupled with semi to agressive EVO's can create alot of drive pressure.
5.3 with a 7675 is a pretty good match. Normally for a street car, id like to limit the overlap to 3-5 degrees at .050 so we werent pushing the turbine too hard. Ive done some cams where i went into the 11-12 degree at .050 range on purpose to give a guy a choppy idle... I dont like doing it but i will.... Sometimes.
Everythings a balance.... ci, turbine, EVO, Overlap at .050.... Its always best to keep everything in proportion to each other... if one gets out of whack to the rest...it causes problems.
If you want a choopy idle a cam that has 10-12 degrees of overlap at .050 will give it to you. But if it also has an agressive evo... it will overdrive the turbine and put it into choke sooner than a cam with a more proper amount. Thats what most guys are trying to say when they say a turbo cam with a choppy idle hurts power.
Its all about balance. A turbo motor is a system from the tips of the impeller to the tips of the turbine. WVERYTHING must be looked at and made certain it fits with everything else. We have to look at everything right down to the diameter and radii of the pipe and bends in the plumbing. Ive seen switching from 3 inch cold sides on a non ic blowthru setup to a 4 inch completely change a motor. Plugs were different...tuneup had to be changed... timing had to be changed...All because that bigg csa pipe slowed the air down and spread it across the carb better.
Everything affects everything.....
Balance.
Bluefire... its overlap that causes the chop for the most part... Problem is... in order to put overlap in the cam and it not be detrimental to the motor... you have to have plenty of turbine. Too much overlap coupled with semi to agressive EVO's can create alot of drive pressure.
5.3 with a 7675 is a pretty good match. Normally for a street car, id like to limit the overlap to 3-5 degrees at .050 so we werent pushing the turbine too hard. Ive done some cams where i went into the 11-12 degree at .050 range on purpose to give a guy a choppy idle... I dont like doing it but i will.... Sometimes.
Everythings a balance.... ci, turbine, EVO, Overlap at .050.... Its always best to keep everything in proportion to each other... if one gets out of whack to the rest...it causes problems.
If you want a choopy idle a cam that has 10-12 degrees of overlap at .050 will give it to you. But if it also has an agressive evo... it will overdrive the turbine and put it into choke sooner than a cam with a more proper amount. Thats what most guys are trying to say when they say a turbo cam with a choppy idle hurts power.
Its all about balance. A turbo motor is a system from the tips of the impeller to the tips of the turbine. WVERYTHING must be looked at and made certain it fits with everything else. We have to look at everything right down to the diameter and radii of the pipe and bends in the plumbing. Ive seen switching from 3 inch cold sides on a non ic blowthru setup to a 4 inch completely change a motor. Plugs were different...tuneup had to be changed... timing had to be changed...All because that bigg csa pipe slowed the air down and spread it across the carb better.
Everything affects everything.....
Balance.
12-27-2012, 11:25 PM
#15
8 Second Club
iTrader: (18)
Join Date: Oct 2002
Location: Waterloo, Ontario
Posts: 2,609
Likes: 0
Received 0 Likes
on
0 Posts
LOL Arun thats pretty funny.
Bluefire... its overlap that causes the chop for the most part... Problem is... in order to put overlap in the cam and it not be detrimental to the motor... you have to have plenty of turbine. Too much overlap coupled with semi to agressive EVO's can create alot of drive pressure.
5.3 with a 7675 is a pretty good match. Normally for a street car, id like to limit the overlap to 3-5 degrees at .050 so we werent pushing the turbine too hard. Ive done some cams where i went into the 11-12 degree at .050 range on purpose to give a guy a choppy idle... I dont like doing it but i will.... Sometimes.
Everythings a balance.... ci, turbine, EVO, Overlap at .050.... Its always best to keep everything in proportion to each other... if one gets out of whack to the rest...it causes problems.
If you want a choopy idle a cam that has 10-12 degrees of overlap at .050 will give it to you. But if it also has an agressive evo... it will overdrive the turbine and put it into choke sooner than a cam with a more proper amount. Thats what most guys are trying to say when they say a turbo cam with a choppy idle hurts power.
Its all about balance. A turbo motor is a system from the tips of the impeller to the tips of the turbine. WVERYTHING must be looked at and made certain it fits with everything else. We have to look at everything right down to the diameter and radii of the pipe and bends in the plumbing. Ive seen switching from 3 inch cold sides on a non ic blowthru setup to a 4 inch completely change a motor. Plugs were different...tuneup had to be changed... timing had to be changed...All because that bigg csa pipe slowed the air down and spread it across the carb better.
Everything affects everything.....
Balance.
Bluefire... its overlap that causes the chop for the most part... Problem is... in order to put overlap in the cam and it not be detrimental to the motor... you have to have plenty of turbine. Too much overlap coupled with semi to agressive EVO's can create alot of drive pressure.
5.3 with a 7675 is a pretty good match. Normally for a street car, id like to limit the overlap to 3-5 degrees at .050 so we werent pushing the turbine too hard. Ive done some cams where i went into the 11-12 degree at .050 range on purpose to give a guy a choppy idle... I dont like doing it but i will.... Sometimes.
Everythings a balance.... ci, turbine, EVO, Overlap at .050.... Its always best to keep everything in proportion to each other... if one gets out of whack to the rest...it causes problems.
If you want a choopy idle a cam that has 10-12 degrees of overlap at .050 will give it to you. But if it also has an agressive evo... it will overdrive the turbine and put it into choke sooner than a cam with a more proper amount. Thats what most guys are trying to say when they say a turbo cam with a choppy idle hurts power.
Its all about balance. A turbo motor is a system from the tips of the impeller to the tips of the turbine. WVERYTHING must be looked at and made certain it fits with everything else. We have to look at everything right down to the diameter and radii of the pipe and bends in the plumbing. Ive seen switching from 3 inch cold sides on a non ic blowthru setup to a 4 inch completely change a motor. Plugs were different...tuneup had to be changed... timing had to be changed...All because that bigg csa pipe slowed the air down and spread it across the carb better.
Everything affects everything.....
Balance.
Now pay the man $399!!!!!!you wouldn't get this detailed answer from Comp or Bullet.
12-28-2012, 03:46 PM
#17
On The Tree
Thread Starter
iTrader: (8)
Join Date: Sep 2007
Location: Sioux City, IA
Posts: 121
Likes: 0
Received 0 Likes
on
0 Posts
This may be a dumb question to those who know, but liljohn do you spec out customs cams? Are you a shop or just do it on the side? Im guessing by what your saying a smoother cam is what's best for turbo like ive been told?
