2011 Camaro, LS3, 260cc AI heads, Fast 102/90, LS3 Street Heat Stage 2/Kooks/GMPP
12-11-2012, 10:49 AM
#1
2011 Camaro, LS3, 260cc AI heads, Fast 102/90, LS3 Street Heat Stage 2/Kooks/GMPP This customer first of all needs to be applauded for one thing...his service to our country. He is as we speak gearing up for his return home from Afghanistan. He has put his life on the line for all of us to enjoy our freedoms as United States Citizens and should be called a hero no matter his duties. It is people like Charles that allow us to afford the freedoms we have today in this great country of ours we take for granted so often. SO for that, Charles, I and everyone at Tick Performance thanks you for your service.
On to Charles' car...it is a 5th generation 2011 Camaro. It is a 6 speed manual trans with stock rear gears. The modifications Charles' car has when he brought it to us was:
TSP 231/236 cam
Kooks 1x7/8" headers that are connected to the factory 2x1/2" H-pipe
GMPP Cat-back exhaust "off-road version" no cats
Charles had one goal and that was to make 500rwhp no if's ands or butts. I was tasked with achieving this and proposed a good plan of attack for Charles and his Camaro.
We decided on Advanced Inductions "budget" port work which includes fully CNC porting the exhaust runners, and CNC machining the valve seat & bowl area of the intake port. The remainder of the intake port, and the combustion chamber are left as cast. AI also does a valve job and milled the heads .015" for us to achieve an 11.0:1 compression ratio. This put us a little tighter on the PTV, but still enough clearance to be safe with the cam we are using.
The cam is our new LS3 "Street Heat Stage 2" that I designed which specs out at 231/242 .617"/.592" 113+4. I have an alternate version with different lobes that I use for L92 and L99 headed motors with the heavier solid stem intake valve which the LS3 does not have. Also the "Street Heat" cam we will be marketing uses a LXL exhaust lobe and Charles cam utilizes an Extreme RPM. I like trying different things sometimes just to see the result and this was definitely a good one!
We topped it off with a LSXR 102mm Fast intake and we are still using the factory 90mm LS3 throttle body along with a Cold Air Inductions intake. We also added a SLP 25% under drive pulley which rounded out the modifications.
Although we didn't baseline it with the 231/236 cam it had a very nice idle to it and was definitely noticeable, but nothing ground shaking. We wanted to keep that idle quality while making it just slightly more aggressive. Here are the results:
SAE-504/463:
STD-515/474:
I am very pleased with the results and I know Charles will be too when he returns home in a week. I want to say a huge thank you to Phil@Advanced Induction for an BAD *** set of cylinder heads. This power number would not of been achievable without his port work. I really wouldn't consider anyone else but him for any of our port work on stock castings at our shop. Not only that, but this port program is only 795.00 dollars and is very budget friendly. This port program is right at home on a stock cubic inch motor and really brings out the potential in these castings.
Another thing I am impressed with is the torque, it's making 430rwtq at 4000rpm!!! I haven't ridden in the car yet, but I'm sure it's going to be a handful even at 4000lbs. curb weight. The idle is definitely noticeable, but isn't so aggressive that it shakes your teeth out.
Thanks for looking and we can duplicate these results ANY day of the week, just bring your car on down to Tick Performance!
On to Charles' car...it is a 5th generation 2011 Camaro. It is a 6 speed manual trans with stock rear gears. The modifications Charles' car has when he brought it to us was:
TSP 231/236 cam
Kooks 1x7/8" headers that are connected to the factory 2x1/2" H-pipe
GMPP Cat-back exhaust "off-road version" no cats
Charles had one goal and that was to make 500rwhp no if's ands or butts. I was tasked with achieving this and proposed a good plan of attack for Charles and his Camaro.
We decided on Advanced Inductions "budget" port work which includes fully CNC porting the exhaust runners, and CNC machining the valve seat & bowl area of the intake port. The remainder of the intake port, and the combustion chamber are left as cast. AI also does a valve job and milled the heads .015" for us to achieve an 11.0:1 compression ratio. This put us a little tighter on the PTV, but still enough clearance to be safe with the cam we are using.
The cam is our new LS3 "Street Heat Stage 2" that I designed which specs out at 231/242 .617"/.592" 113+4. I have an alternate version with different lobes that I use for L92 and L99 headed motors with the heavier solid stem intake valve which the LS3 does not have. Also the "Street Heat" cam we will be marketing uses a LXL exhaust lobe and Charles cam utilizes an Extreme RPM. I like trying different things sometimes just to see the result and this was definitely a good one!
We topped it off with a LSXR 102mm Fast intake and we are still using the factory 90mm LS3 throttle body along with a Cold Air Inductions intake. We also added a SLP 25% under drive pulley which rounded out the modifications.
Although we didn't baseline it with the 231/236 cam it had a very nice idle to it and was definitely noticeable, but nothing ground shaking. We wanted to keep that idle quality while making it just slightly more aggressive. Here are the results:
SAE-504/463:
STD-515/474:
I am very pleased with the results and I know Charles will be too when he returns home in a week. I want to say a huge thank you to Phil@Advanced Induction for an BAD *** set of cylinder heads. This power number would not of been achievable without his port work. I really wouldn't consider anyone else but him for any of our port work on stock castings at our shop. Not only that, but this port program is only 795.00 dollars and is very budget friendly. This port program is right at home on a stock cubic inch motor and really brings out the potential in these castings.
Another thing I am impressed with is the torque, it's making 430rwtq at 4000rpm!!! I haven't ridden in the car yet, but I'm sure it's going to be a handful even at 4000lbs. curb weight. The idle is definitely noticeable, but isn't so aggressive that it shakes your teeth out.
Thanks for looking and we can duplicate these results ANY day of the week, just bring your car on down to Tick Performance!
Last edited by Sales@Tick; 12-16-2012 at 09:16 PM.
12-11-2012, 12:23 PM
#3
I made a similar comment earlier that if you had told me 5 years ago that you could make 500rwhp with a 231 degree intake lobe, I'd of laughed at you. Even more so would I of laughed at you if you would of said it was attainable with a 376 cubic inch engine.
Last edited by Sales@Tick; 12-11-2012 at 04:06 PM.
12-11-2012, 04:05 PM
#5
I think with a 102mm TB, a real aftermarket 3" ORX pipe, 3" exhaust and port matching his intake he could see 520rwhp easily. Hell it still has resonators in the exhaust before the damn GMPP mufflers!!! GOT to be a restriction there also.
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12-11-2012, 07:20 PM
#8
I'll take my good camera to work tomorrow and get some idle videos. Yea I could of put a huge rowdy cam that had horrible PTV and drivability and surged everywhere that made 15-20 more rwhp or I could have nearly 450rwtq at 3600rpm and much nicer driving manners. Besides that's what the Polluter for LS3's is for.
In this case, I don't think it would of done much, but I won't know really until I test some more set-ups with the LXL exhaust lobe. It would be interesting to see how the extra lobe lift affected the curve and power numbers along with the added duration at .200" as you pointed out.
12-13-2012, 04:05 PM
#10
What you see is what you get, and the devil is in the details that is for sure. Thanks for the compliments.
12-16-2012, 10:55 AM
#12
TECH Enthusiast
Honestly, I used to not be impressed by the LS3 heads...at all. I had seen so many set-ups that should of made big power, fall way short of anything impressive. Then I started to mess with them myself, and had some pretty good results so when this customer approached me wanting a 500rwhp H/C/I LS3...
My My My the tables have turned.
12-16-2012, 08:57 PM
#15
Can you get 500 cam only out of a corvette with a ls3 and a cam with twice the over lap, sure. It won't cruise at 60 in 6th with 3.45 gears though. For a dd it's plenty Stout.
We had another 5th gen with the same heads, 102 intake with a fast 102 throttle body, arh 1x7/8" headers(turns out charles camaro has 1x3/4" headers not 1x7/8"), arh 3" off road x pipe, arh exhaust with cut outs, an advanced induction 231/238 113+3 cam that made 507 rwhp on another local dyno with the same tune baseline pull on our dyno made 485rwhp so it's a good 20rwhp lower than most and breaks hearts all the time.
12-16-2012, 09:10 PM
#16
That said it doesn't take much cam to make power with these heads. They are very sensitive to when the intake valve opens and will have poor driving characteristics if not paid close attention to.
12-16-2012, 09:13 PM
#17
Nice martin.
Hogging for a second here. Pat G suggested these for my 408, but im unsure of which intake cc to go with. The 260 seems to make less lower down, and shines at the top, but with a ported ls3 intake I dont think I can take advantage. The 255 on the other hand beats the 250 and im thinking my larger cubes can use it? (And i know these are ai heads and not the prc small bore heads) but Im sure you can comment on the velocity part
Advice?
Hogging for a second here. Pat G suggested these for my 408, but im unsure of which intake cc to go with. The 260 seems to make less lower down, and shines at the top, but with a ported ls3 intake I dont think I can take advantage. The 255 on the other hand beats the 250 and im thinking my larger cubes can use it? (And i know these are ai heads and not the prc small bore heads) but Im sure you can comment on the velocity part
Advice?
Last edited by Tainted; 12-16-2012 at 09:21 PM.
12-16-2012, 09:47 PM
#18
Nice martin.
Hogging for a second here. Pat G suggested these for my 408, but im unure of which intake cc tosmall go with. The 260 seems to make less lower down, and shines at the top, but with a ported ls3 intake I dont think I can take advantage. The 255 on the other hand beats the 250 and im thinking my larger cubes can use it? (And i know these are ai heads and not the prc small bore heads) but Im sure you can comment on the velocity part
Advice?
Hogging for a second here. Pat G suggested these for my 408, but im unure of which intake cc tosmall go with. The 260 seems to make less lower down, and shines at the top, but with a ported ls3 intake I dont think I can take advantage. The 255 on the other hand beats the 250 and im thinking my larger cubes can use it? (And i know these are ai heads and not the prc small bore heads) but Im sure you can comment on the velocity part
Advice?
12-16-2012, 10:14 PM
#19
Did he suggest after market ls3 heads or factory ls3 heads? I ask this because the factory heads are 262cc stock. PRC and Mast sell small bore ls3 heads that come in the sizes you mentioned. For your application the 250cc head would be my choice. Did he specify the cam for a certain port volume?
