Big Cam needed for twin turbo C-5
09-09-2003, 01:25 PM
#1
Teching In
Thread Starter
Join Date: Sep 2003
Posts: 1
Likes: 0
Received 0 Likes
on
0 Posts
Big Cam needed for twin turbo C-5 I have a customer that I am currently building a twin turbo kit for. I am looking for the names of some reputable LS1 engine builders(I am not impressed w/MTI) so I can get a custom cam ordered. Any help would be greatly appreciated.
09-09-2003, 01:39 PM
#2
TECH Veteran
Join Date: Aug 2002
Location: Hartsdale, NY
Posts: 4,055
Likes: 0
Received 0 Likes
on
0 Posts
Re: Big Cam needed for twin turbo C-5 Marc at Raging MotorSports ------>
has an arrangement with Comp Cams and does lots of spec cams....
They are fast and accurate....my spec cam was shipped within one week...
....not sure about a grind for this set up, however...
has an arrangement with Comp Cams and does lots of spec cams....
They are fast and accurate....my spec cam was shipped within one week...
....not sure about a grind for this set up, however...
09-09-2003, 06:42 PM
#4
6600 rpm clutch dump of death Administrator
Re: Big Cam needed for twin turbo C-5 Turbos aren't going to like lots of overlap. Look at the LPE GT2-3 as an example of a turbo cam. I'd recommend the OMC2 from Thunder racing. The MTI stealth, or the LPE GT2-3 as a good turbo cam. All are about the same duration, lift and LSA are the only differences.
09-10-2003, 07:44 PM
#5
On The Tree
Join Date: Jan 2003
Location: Fair Oaks, CA
Posts: 167
Likes: 0
Received 0 Likes
on
0 Posts
Re: Big Cam needed for twin turbo C-5 Best turbo site around: www.turbomustangs.com
Off-hand I can't remember all the turbo-specific cam grinders...but do a search in the forums & you'll find all the info you need.
One of my buddies is building a Stang to compete in Drag Radial class. He just got his turbo grind which measures 234/228 114LSA 110ICL. With heads that flow 230cfm on the exhaust & 18-20lbs he'll run 150mph in the 1/4 with a 3400lb raceweight. Crunching the #'s I don't think he'll even need that much boost to do it....& that's with a little T76.
Off-hand I can't remember all the turbo-specific cam grinders...but do a search in the forums & you'll find all the info you need.
One of my buddies is building a Stang to compete in Drag Radial class. He just got his turbo grind which measures 234/228 114LSA 110ICL. With heads that flow 230cfm on the exhaust & 18-20lbs he'll run 150mph in the 1/4 with a 3400lb raceweight. Crunching the #'s I don't think he'll even need that much boost to do it....& that's with a little T76.
09-10-2003, 10:05 PM
#6
Re: Big Cam needed for twin turbo C-5 loads of the cams around are <224 duration and available on a 114 LS. TR's cam comes to mind. As an avid turbo motor guy, I recommend running from overlap like its the plague. So TR224 on a 114 is as big as I'd ever go.
Thunder Racing is on the right.
Thunder Racing is on the right.
Trending Topics
09-11-2003, 08:49 AM
#8
TECH Fanatic
iTrader: (2)
Join Date: Nov 2001
Location: Baton Rouge
Posts: 1,894
Likes: 0
Received 0 Likes
on
0 Posts
Re: Big Cam needed for twin turbo C-5 Okay here are 2 cams that I would recommend; The TR227/224 114lsa, or for something a little milder a 224/220 .563/.558 115lsa. Either of those will work GREAT in a turbo car.
09-11-2003, 03:11 PM
#9
9 Second Club
Join Date: Nov 2001
Location: Bay Area, CA
Posts: 1,445
Likes: 0
Received 0 Likes
on
0 Posts
Re: Big Cam needed for twin turbo C-5 hes asking for a big cam, lol I'd seriosuly go talk to some ford shops, they have been around for a while, I like 93ponys idea.
09-11-2003, 09:24 PM
#12
On The Tree
Join Date: Jan 2003
Location: Fair Oaks, CA
Posts: 167
Likes: 0
Received 0 Likes
on
0 Posts
Re: Big Cam needed for twin turbo C-5
Talk to Terry at Cam Motion.
My new turbo cam is a 225/219 .558/.564 114 and I got it from them.
My new turbo cam is a 225/219 .558/.564 114 and I got it from them.
Those are the guys!
09-12-2003, 09:04 AM
#13
6600 rpm clutch dump of death Administrator
Re: Big Cam needed for twin turbo C-5 Its just me, but on a turbo motor I'd prefer plenty of exhaust profile to keep the turbo singing. On the intake side, its pressurized, so the know issues of the LSx intake can be overcome somewhat. I'd do a standard split on a turbo car...
09-12-2003, 11:36 AM
#14
TECH Apprentice
Join Date: Jan 2002
Location: Orlando
Posts: 347
Likes: 0
Received 0 Likes
on
0 Posts
Re: Big Cam needed for twin turbo C-5 i agree with j-rod more exhaust is the answer. you are pressurized on the intake forcing air in, but you need time to get the exhaust out. traditional split
09-12-2003, 12:22 PM
#15
TECH Fanatic
iTrader: (2)
Join Date: Nov 2001
Location: Baton Rouge
Posts: 1,894
Likes: 0
Received 0 Likes
on
0 Posts
Re: Big Cam needed for twin turbo C-5
i agree with j-rod more exhaust is the answer. you are pressurized on the intake forcing air in, but you need time to get the exhaust out. traditional split
Sorry guys that's great for a blower or nitrous but that's not the way you go with a turbo car. Take a look at the cams that most of the turbo Buick and Mustang guys are running and you'll see that most of them are running smaller reverse split cams.
09-12-2003, 01:09 PM
#17
Re: Big Cam needed for twin turbo C-5
i agree with j-rod more exhaust is the answer. you are pressurized on the intake forcing air in, but you need time to get the exhaust out. traditional split
Sorry guys that's great for a blower or nitrous but that's not the way you go with a turbo car. Take a look at the cams that most of the turbo Buick and Mustang guys are running and you'll see that most of them are running smaller reverse split cams.
A Turbo is not 100% efficient. In order to produce a given pressure on the cold side, the exhaust is going to have to produce that energy. Given intake/exhaust flow is moderately taken care of on the NA car by port size and a symmetric camshaft, the exhaust pressure will be greater than the intake, thereby meaning that the volume of air moving through the ports is actually less proportionally in the exhaust of a turbo car than in a NA car. The pressure is much higher however, and after the turbo the volume is drastically larger than in a NA car, especially if you are running slightly rich for safety.
In trying hard to avoid overlap (with the added boost, the intake mixture will run, not walk out the exhaust valve if there is any overlap) turbo cars find its better to take a little exhaust duration away from an otherwise single pattern cam, hence the reverse split.
"formerly TE-63Syclone"
chris
09-12-2003, 01:19 PM
#18
TECH Fanatic
iTrader: (2)
Join Date: Nov 2001
Location: Baton Rouge
Posts: 1,894
Likes: 0
Received 0 Likes
on
0 Posts
Re: Big Cam needed for twin turbo C-5
You can think of it this way: (Why the reverse split is better)
A Turbo is not 100% efficient. In order to produce a given pressure on the cold side, the exhaust is going to have to produce that energy. Given intake/exhaust flow is moderately taken care of on the NA car by port size and a symmetric camshaft, the exhaust pressure will be greater than the intake, thereby meaning that the volume of air moving through the ports is actually less proportionally in the exhaust of a turbo car than in a NA car. The pressure is much higher however, and after the turbo the volume is drastically larger than in a NA car, especially if you are running slightly rich for safety.
In trying hard to avoid overlap (with the added boost, the intake mixture will run, not walk out the exhaust valve if there is any overlap) turbo cars find its better to take a little exhaust duration away from an otherwise single pattern cam, hence the reverse split.
"formerly TE-63Syclone"
chris
A Turbo is not 100% efficient. In order to produce a given pressure on the cold side, the exhaust is going to have to produce that energy. Given intake/exhaust flow is moderately taken care of on the NA car by port size and a symmetric camshaft, the exhaust pressure will be greater than the intake, thereby meaning that the volume of air moving through the ports is actually less proportionally in the exhaust of a turbo car than in a NA car. The pressure is much higher however, and after the turbo the volume is drastically larger than in a NA car, especially if you are running slightly rich for safety.
In trying hard to avoid overlap (with the added boost, the intake mixture will run, not walk out the exhaust valve if there is any overlap) turbo cars find its better to take a little exhaust duration away from an otherwise single pattern cam, hence the reverse split.
"formerly TE-63Syclone"
chris
Yeah what he said.
Thanks for explaining that Chris. 
09-12-2003, 06:40 PM
#19
Staging Lane
Join Date: Jun 2003
Posts: 56
Likes: 0
Received 0 Likes
on
0 Posts
Re: Big Cam needed for twin turbo C-5 There are a few turbo cams listed on website on this page. http://www.cmotorsports.com/engine/l...ft-design.html We actually have about 10 more turbo cams, but there are SO many factors that go into a turbo cam we like people to call and tell us all about their setup before making a recommendation. Car weight, boost, header design, A/R ratio on the exhaust housing, etc. Just give us a call, ask for Seth or Sam, they are the turbo guru's.
Dave
Dave
09-14-2003, 12:53 AM
#20
6600 rpm clutch dump of death Administrator
Re: Big Cam needed for twin turbo C-5 I also own a Turbo car (a GN). And I have a reverse split in it an ATR RP309G (212/206). But, a 3.8 Buick and a LS1 are different animals. Also, look at one of the most succesful Turbo tuner in the LS1 platform, LPE. The cam of choice in their motors. GT2-3 its a standard split.