PP 5.3s @ TR224 # Inside
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From: Lake Anna, VA/ Fairmont, WV
PP 5.3s @ TR224 # Inside First off a huge thanks to Mikey and Rapid Motorsports along with Phoenix Performance for the good dyno time. Mikey worked very hard tuning my car and it produced some good power and driveability. Mods are in sig and car was dynoed in full street trim. No tricks here! 
1st pull on the stock headed TR224 tune netted 390rwhp @ ? rwtq. Ltrims were way off along with an AFR in the low 11's. After Mikey worked his tuning magic it pulled 411.5 rwhp @ 386.9 rwtq with a 12.9-1 AFR. This run was through my Corsa muffler and CME tips. The last run I opended the QTEC and was able to pull 416rwhp @ 391rwtq. My QTEC is positioned in the I pipe after the cats so just bypassing the Corsa netted me 4rwhp @ 5rwtq.
Overall I'm very pleased with the results. I'm thinking about having a set of offroad pipes made to swap in place of the cats when I need the extra 10-20 rwhp. Mikey advised me to get a 160 stat as my car was running pretty hot with the stock Tstat and my new heads with higher compression.
Once again A big thanks to Mikey!
His LS1 tune netted me 26rwhp over what I had at the start of the day!
Graph below is of the AFR and run through the cutout closed. I have an overlay of the cutout vs closed run and will post that later on.
1st pull on the stock headed TR224 tune netted 390rwhp @ ? rwtq. Ltrims were way off along with an AFR in the low 11's. After Mikey worked his tuning magic it pulled 411.5 rwhp @ 386.9 rwtq with a 12.9-1 AFR. This run was through my Corsa muffler and CME tips. The last run I opended the QTEC and was able to pull 416rwhp @ 391rwtq. My QTEC is positioned in the I pipe after the cats so just bypassing the Corsa netted me 4rwhp @ 5rwtq.
Overall I'm very pleased with the results. I'm thinking about having a set of offroad pipes made to swap in place of the cats when I need the extra 10-20 rwhp. Mikey advised me to get a 160 stat as my car was running pretty hot with the stock Tstat and my new heads with higher compression.
Once again A big thanks to Mikey!
His LS1 tune netted me 26rwhp over what I had at the start of the day! Graph below is of the AFR and run through the cutout closed. I have an overlay of the cutout vs closed run and will post that later on.
Hey, that graph almost looks identical to mine. Now I don't feel so bad. I pulled almost the same numbers as well with my tr224/114.
I just don't understand why we don't get a nice rainbow on our torque curve. We have that flat spot in the middle.
You are in the same boat as me. The cats have to go to see what these setups are capable of.
I just don't understand why we don't get a nice rainbow on our torque curve. We have that flat spot in the middle.
You are in the same boat as me. The cats have to go to see what these setups are capable of.
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#'s are thru the stock 10 w 3.42s. Brian, Mikey overlayed my graph with a identical setup to mine that he tuned, the only difference being the heads were Rapid's Stage II's and the flat spot you mention in the torque curve is not there. The car with Mikey's heads made around 25 more rwtq than mine did from 3500-4500rpm range. Peak numbers were about the same but the area under the curve was alot stronger. I'm not saying i'm not happy with my results or heads as I could go back to an ORY and watch my numbers climb 10+ rwhp but the difference is there.
Originally Posted by Ryan02SS
#'s are thru the stock 10 w 3.42s. Brian, Mikey overlayed my graph with a identical setup to mine that he tuned, the only difference being the heads were Rapid's Stage II's and the flat spot you mention in the torque curve is not there. The car with Mikey's heads made around 25 more rwtq than mine did from 3500-4500rpm range. Peak numbers were about the same but the area under the curve was alot stronger. I'm not saying i'm not happy with my results or heads as I could go back to an ORY and watch my numbers climb 10+ rwhp but the difference is there.
Originally Posted by jrp
interesting. what heads were the Rapid StgII's?
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Originally Posted by mikey
LS1 Heads, stock compression. Our heads are known to produce a very broad, flat curve. Here's a graph. This was a 2002 Firehawk, FLP headers, no cats, TR224/112 cam, Magnaflow CB.
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Anytime you have cats in the car you never know how much they are costing you. It might be alittle or alot. Ive seen gains from 10-25 hp (depending on the type of cats and condition of the cats). Thats why it is hard to even compare numbers with other cars that have cats. Cruisen around with 411 emisions legal hp is very good.
Good luck and enjoy the car
Jeremy
Good luck and enjoy the car
Jeremy
Originally Posted by Ryan02SS
#'s are thru the stock 10 w 3.42s. Brian, Mikey overlayed my graph with a identical setup to mine that he tuned, the only difference being the heads were Rapid's Stage II's and the flat spot you mention in the torque curve is not there. The car with Mikey's heads made around 25 more rwtq than mine did from 3500-4500rpm range. Peak numbers were about the same but the area under the curve was alot stronger. I'm not saying i'm not happy with my results or heads as I could go back to an ORY and watch my numbers climb 10+ rwhp but the difference is there.
Originally Posted by Billiumss
441RWHP with a TR 224 cam, umm no..... 
What are the flow numbers of those heads? Were you running race gas? What was the timing set at?
Bill
What are the flow numbers of those heads? Were you running race gas? What was the timing set at?
Bill
i guess thunders lying to then
The above dyno graph is from a 1998 Camaro SS (6 speed) with Thunder Racing's 99-224/224-112 Camshaft, GTP/Thunder Racing Stage 2 Cylinder Heads. The car has a full compliment of bolt-on modifications, including Whisper Air Induction, Thunder Racing ported throttle body, Grotyohann long-tube headers w/ 3" y-pipe, Borla cat-back exhaust (no plate,) ASP Pulley and Royal Purple Synthetic Lubricants. The car also has a Moser 12 bolt rear end with 4.10 gears.
This graph is a before & after with the same car from when it had only a few bolt-on modifications (Whisper lid, exhaust, etc.) and after the cam, headers, and cylinder heads. The "before" run also was when the car had a stock 10 bolt rear end w/ 3.42 gears. (12 bolt rear ends with lower gear ratio's tend to reduce horsepower results on the dyno.)
GTP Heads flow a tad less than Absolute Speeds Heads, especially, 1-2 years ago.
My runs were with the the cutout open too.
So your saying using different oil, a ASP Pulley and a 112lsa TR 224 cam will get you 30 more HP over what I had last year? I find that hard to believe. My timing was at 28 degrees and I use 93 octane fuel all the time.
TR 230 cam and 5.3 Stg 2 heads barely make that kind of power.
Anyways, congrats to whoever those cars are!
My runs were with the the cutout open too.
So your saying using different oil, a ASP Pulley and a 112lsa TR 224 cam will get you 30 more HP over what I had last year? I find that hard to believe. My timing was at 28 degrees and I use 93 octane fuel all the time.
TR 230 cam and 5.3 Stg 2 heads barely make that kind of power.
Anyways, congrats to whoever those cars are!
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Originally Posted by Billiumss
GTP Heads flow a tad less than Absolute Speeds Heads, especially, 1-2 years ago.
My runs were with the the cutout open too.
So your saying using different oil, a ASP Pulley and a 112lsa TR 224 cam will get you 30 more HP over what I had last year? I find that hard to believe. My timing was at 28 degrees and I use 93 octane fuel all the time.
TR 230 cam and 5.3 Stg 2 heads barely make that kind of power.
Anyways, congrats to whoever those cars are!
My runs were with the the cutout open too.
So your saying using different oil, a ASP Pulley and a 112lsa TR 224 cam will get you 30 more HP over what I had last year? I find that hard to believe. My timing was at 28 degrees and I use 93 octane fuel all the time.
TR 230 cam and 5.3 Stg 2 heads barely make that kind of power.
Anyways, congrats to whoever those cars are!
Also not all heads are the same either...
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From: loudoun county,va
Originally Posted by Billiumss
GTP Heads flow a tad less than Absolute Speeds Heads, especially, 1-2 years ago.
My runs were with the the cutout open too.
So your saying using different oil, a ASP Pulley and a 112lsa TR 224 cam will get you 30 more HP over what I had last year? I find that hard to believe. My timing was at 28 degrees and I use 93 octane fuel all the time.
TR 230 cam and 5.3 Stg 2 heads barely make that kind of power.
Anyways, congrats to whoever those cars are!
My runs were with the the cutout open too.
So your saying using different oil, a ASP Pulley and a 112lsa TR 224 cam will get you 30 more HP over what I had last year? I find that hard to believe. My timing was at 28 degrees and I use 93 octane fuel all the time.
TR 230 cam and 5.3 Stg 2 heads barely make that kind of power.
Anyways, congrats to whoever those cars are!
so you got 411 hp outa your set up? i got 395 cam only from my 224 cam verified on 2 differant dynos on the stock tb with full belts...
i would be down right PISSED if i only picked up 16 hp from stage 2 heads
i would expect 25-30 hp putting me about 425 ish and complete the tb and short belt 435-440 dont sound to far off.... whats so hard to believe?
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jaberwaki, I bet your running a catless setup also to hit 395rwhp? I used to run the Hooker ORY and with my stock heads I pulled 399rwhp with the TR224. I then added the QTP Catted Y for better sound and to quiet the car down some as it's my DD. From what others have said highflow cats on a HC setup become pretty restrictive so I may be missing out on 10-20rwhp using them. If I ever need that extra power a set of dual QTEC's before the cats will work nicely. My goal was to have a powerful fun to drive with no problems LS1 and I met that goal pretty good.
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From: loudoun county,va
my comments were not pointed at you(see quote) you numbers are good thru cats...
in fact your thru cat numbers are better then this naysayer's ory numbers.... if you took of the cats i am sure your numbers would jump big...
in fact your thru cat numbers are better then this naysayer's ory numbers.... if you took of the cats i am sure your numbers would jump big...
I guess I am just going to have to ditch the cats and install a cutout just to see what my numbers would jump to. You guys are the reason I keep modding and its costing me an arm and a leg 
Its only money, right?
Its only money, right?
