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1300+ SAE RWHP
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Discussion Starter #1 (Edited)
779 RWHP (731 RWHP SAE) 669 RWTQ Stock LS2 05 Procharged Turbo Connection M6 GTO

2005 GTO Owner/Builder Jim Riskovsky Jr Owner/Performance Specialist of Turbo Connection Racinglisted preliminary results last year in this forum.

730 SAE RWHP Dyno Runs

http://www.youtube.com/watch?v=i4G5RLsJGIg

http://www.youtube.com/watch?v=rER74gO516c

This thread is constantly being updated so please check back from time to time. or check http://turboconnectionracing.com/forum1/viewtopic.php?p=2#2

The BIG NEWS here is that this STOCK LS2 project has blasted a number of myths out there as to what is necessary/mandatory to make 779(to date) RWHP. Its my daily driver and its been dead reliable full throttle blast after blast!

THESE RESULTS WERE ACCOMPLISHED WITH:

stock fuel rails
stock fuel lines
42 lb injectors
10.9 to 1 compression
93 octane pump gas
stock LS2 cam
stock LS2 engine
two core intercooler
12.5 psi boost
D1SC supercharger
unported LS2 heads
stock rod bolts
ethanol injection not water/methanol
stock pistons

Follow along below for all the details:


(541.5 SAE) July 28, 2006 Dyno Session recorded 557 RWHP equipped with 7 psi D1SC, 60 lb injectors, stainless works exhaust, Spec 3+ clutch and aluminum flywheel, one ethanol nozzle, and a "very conservative tune."

(576.2 SAE) Aug 18, 2006 Dyno Session recorded 598 RWHP and 513 RWTQ with 42 lb injectors and "more aggressive tune."

(604.8 SAE) Oct 6, 2006 Dyno Session yeilded 622.3 RWHP @ 6400 rpm's and 543 RWTQ @ 5200 rpms With the following modificatons: 1.85 Ratio Comp Cams Pro Magnum Rocker arms, 160 degree thermostat, 8 oz Pro Blend Oil additive, 0-30W Castrol Syntec Synthetic motor oil, Nitto 245 40 17 DR's with ambient temps near 70 degrees. The waviness of the previous dyno runs is gone as well, we believe due to the DR's. Rather than opting to simply change the blower pulley, we felt that optimizing the existing combination first would prove far more reliable. A/F appeared that more fuel was needed.

(622.9 SAE) Oct 31, 2006 Dyno Session made 641 RWHP @ 6800 rpm 552 RWTQ @ 5200 still at 7 psi boost by adding more fuel and alky(second progressive controller with #15 nozzle) and still no knock on 93 octane pump gas was detected.

(664.9 SAE) Nov 17, 2006 Dyno Session made 682.8 RWHP 598.5 RWTQ With 10 psi boost and a third # 15 alky nozzle![/B] A/F appeared more fuel from 6400 rpms up is needed.

(707 SAE) Dec 7, 2006 Dyno Session made a whopping 766 RWHP 662 RWTQ Actual, 733 RWHP @ 6200rpm 633.6 RWTQ STD (707 RWHP SAE) Only modification was modified air inlet elbow and huge air filter. The air filter and elbow modification increased boost by a solid 2.5 psi. At 5000 rpms we measured 10 psi, 12.5 psi at 6200, 14.5 psi at 6800 rpm's. More fuel is DEFINITELY needed from 6000 to 6800 rpms. I believe 780 RWHP+ (Actual) is possible once we have done so.

(729.9 SAE) Dec 27, 2006 Dyno Session made 757 RWHP 640 RWTQ (Actual @ 55 degrees), 751.2 [email protected] 6800rpm 14.5 psi /635.7 RWTQ, 751.2 RWHP/635.7 RWTQ (STD), 729.9 RWHP/609.7 RWTQ (SAE) With 4th alcohol nozzle.
Mid range picked up over 20 lbs torque at 4500 rpms.

(730.9 SAE) Jan 8, 2007 Dyno Session made 757.9 RWHP/650.5RWTQ (Actual @ 49 degrees), 751.2 [email protected] 6800rpm 14.5 psi /635.7 RWTQ, 751.2 RWHP/642.9 RWTQ (STD), 730.9 RWHP/624.2 RWTQ (SAE) With minor alcohol adjustment.

(731 SAE) Jan 16, 2007 Dyno Session made 778.9 RWHP 669.4 RWTQ /ACTUAL UNCORRECTED(47 degrees) (SAE unchanged)

(731 SAE) April 5, 2007 Changed to 3.375 Blower pulley picked up 10 ft lbs torque now at 635 RWTQ SAE, RWHP unchanged. Tried fuel additive from Pro Blend No Change in HP or Torque Observed. I have a special inlet adapter purchased from Reichart racing to increase air flow into supercharger but its going to require some modification to make it work. they have reported gains of 30 to 50 HP with an F1 supercharger. I also have the GZ Motorsports vacuum pump but have to reposition the MAF and boost tube for clearance.

May 11, 2007 Eagle Torquemaster plugs showed no power gain on this application.

http://good-times.webshots.com/photo/2985351270050151074FrHZrF Air Filter Mod

http://good-times.webshots.com/photo/2528386260050151074sbJmfZ Dyno Sheet

GZ Motorsports vacuum pump installation Pics (Chassis Dyno results coming soon!):

http://good-times.webshots.com/photo/2690132050050151074zQeTBG

http://good-times.webshots.com/photo/2982832450050151074hBDvpn

http://good-times.webshots.com/photo/2879103660050151074aSMpWR


[Here's a complete list of modifications performed to date, latest mods listed in bold:

Stock 2005 LS2 engine.
ATI D1SC Procharger 3.375 inch blower pulley
2 Core Sheet metal Intercooler
93 Octane fuel
Twin SMC Alcohol Injection Progressive Systems running 4 #15 nozzles and two controllers on straight 113 Octane Ethanol
http://good-times.webshots.com/photo/2784419220050151074mXZmjq Bottles in trunk
http://good-times.webshots.com/photo/2496759200050151074BHpRcw Dash mounted controllers
http://good-times.webshots.com/photo/2659700280050151074mDcmxl Nozzle placement
Stainless Works complete exhaust system*
http://good-times.webshots.com/photo/2485073100050151074CNEkgg Stainless Works Exhaust
BMR Drive Shaft*
BMR Drag Bags*
Spec 3+ Clutch with aluminum Flywheel
160 degree SLP thermostat*
1.85 Comp Cams Pro Magnum Rocker arms
Valve cover spacers
Comp CAMS 918 Beehive springs with Titanium Retainers
Denso Iridium Plugs
MSD 8.5 Plug wires
Nitto 245 45 17 Drag Radials
45 lb injectors (upgrading to 63's shortly)
Flow Charger Fuel Pump Voltage Booster connected to SMC Alcohol kits With alcohol lubricant
255 LPH LPE fuel Pump Upgrade
Kenne Bell BAP connected to 255 LPH pump

GMM Ripper Shifter purchased from Speed Inc*
Diff Techniques spool and axles*
Koni Adjustable Struts and shocks
Mickey Thompson E/T street Slicks
Mickey Thompson 17 inch Front runners on modified spare wheels
Hotchkis Adjustable front and rear sway bars from LMPerformance*
Tuned By MCG using HP Tuners*

* Designates products purchased from LS1GTO forum sponsors.

I have been installing turbos and superchargers on engines for two decades and I have NEVER seen an engine respond to boost as favorably as the LS2! A mere 7 psi boost made 641 RWHP with alky, exhaust, and 1.85 rockers added 321 RWHP and climbing! What an amazing engine!! On our third pull/fifth dyno session at 10 psi boost the LS2 made 682.8 RWHP...additional tuning alone should improve those numbers.

Modifications that are being considered are listed below. We will continue to update the thread as those results unfold.

65 Lb Injectors
Fuel System Upgrades(larger fuel rails reg etc)
E85 Fuel
1.95 Ratio Jesel Shaft rockers
Nitrous Outlet NX Express Nitrous N-tercooler System http://www.nitrousexpress.com/Catalog/2006/ntercooler.pdf
Meziere Electric water pump
Evans NPG plus coolant
Relocate IAT
Remove MAF screen
Change to 2 bar MAP and go SD
Twin Disk Clutch
 

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Back at it again.....
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948 Posts
Wow! Nice setup! That alky and 93 octane must allow you to run a ridiculous amount of timing. That is a monster!
 

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Back at it again.....
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948 Posts
Wait a minute........you dont have a cam? Wow!
 

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1300+ SAE RWHP
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523 Posts
Discussion Starter #4
CRZYLS2 said:
Wait a minute........you dont have a cam? Wow!
Right! No cam just rocker arms. We are runnning 20 degrees total in the midrange and 25 degrees total timing on top.
 

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CRZYLS2 said:
Wait a minute........you dont have a cam? Wow!
It's a completely stock motor! That's incredible! Damn, this really makes me want to go with F/I....but alas, I am too poor. Oh well....that's a great job on your part! Very nice...
 

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1300+ SAE RWHP
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523 Posts
Discussion Starter #6 (Edited)
I am going to change to 63 lb injectors(+?? HP), either eliminate the cats(+12 HP) or go with exhaust cut outs(+20 HP), and a Meziere water pump(+12 HP). Possibly a crank case evacuation system(+30 hp). I also am going to try a more efficient air filter and even a "Tornado" in the inlet tube. For safety I think its time to switch to FAST fuel rails and more fuel pump. E85 tests next year.
 

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25 Posts
that thing must be insane..
 

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Captain Thread Killer returns
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21,898 Posts

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Blowed Up...
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Corrected numbers may mean something to your guys. But if I were the owner of the car I would prefer to know what my car makes in the given weather!
 

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Holy Chit!!!!!!!
 

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1300+ SAE RWHP
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523 Posts
Discussion Starter #16
jcain said:
25*? daaaaaaaaaaamn. i cant hardly get 17 into mine !
Has to be the alcohol. Keith McCord and I took it out several times on the street and zero knock.
 

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1300+ SAE RWHP
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523 Posts
Discussion Starter #17 (Edited)
geegro05 said:
Tornado?? uhhh you're kidding right?
I am going to give it a try on the dyno. I really don't expect any gains. But you know what happens when you assume.lol
 

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1,185 Posts
so a place called turbocharged connection runs a supercharger on their car................................
 

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1300+ SAE RWHP
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523 Posts
Discussion Starter #19
TrakDay said:
Corrected numbers may mean something to your guys. But if I were the owner of the car I would prefer to know what my car makes in the given weather!
UNCORRECTED/ACTUAL Numbers are 626.1 RWHP 548.7 RWTQ!.
 

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1300+ SAE RWHP
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523 Posts
Discussion Starter #20 (Edited)
itsme4g63 said:
so a place called turbocharged connection runs a supercharger on their car................................
LOL! Very Good Point! Superchargers are cheaper and easier to maintain and install than turbo kits for these cars. I started my business over 10 years ago and at that time was heavily into turbocharging 5.0 Mustangs and third Gen Fbodys. Back then, ATI didn't exsist. I have had a tremendous amount of success with turbos. I built this car for a customer then family problems forced him to sell it. I loved the car and bought it. I have been having a blast with it. I have an 86 IROC that will soon be the home for a 2000 HP 632 Big Block Twin Turbo set up for the street and track.

I really don't care what the logo on the fender says I love making horsepower, whether it be a Supra, Mustang, Vette or GTO. I keep an open mind about things and go against the grain. Not everything I try works. My cars are the "Guinea Pigs". Then my customers get the modifications that work.
 
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