Finally - GPI Max Package 2.0 is LIVE. SBE NA LS3 - 551whp - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

acammer · 07-12-2022, 09:54 AM

It's finally live guys! Max Package 2.0 is OUT! Been waiting a long time to share this, but we made 551whp on my SBE LS3. No flycuts. Pump 93 octane. Untouched LS7 LSXR manifold. No smoke and mirrors, just stanky, bolt on and go NA power that fits under the hood and delivers the goods!

Here is the old SS3 and ported rod mod vs. the Max 2.0. Look at the power curve, yes we made a good peak number, but more-over, we more or less matched the old setup down low, spanked it up top, and stretched it out another 500+rpm.

This thing runs and drives awesome. I've got 2,400+ miles on this setup already, and still haven't wiped the grin off my face. For a heavy all motor car, this thing moves.

I'm sure you've got questions, take a look through the article as we got a great write-up with a ton of information there.

https://gwatneyperformance.com/intro...olt-on-setups/

If it's something you think you want, here's where you can configure one for yourself:

https://gwatneyperformance.com/produ...amshaft/ref/3/

Of course, you can always reach out with questions too - andrew@gwatneyperformance.com

acammer · 07-12-2022, 10:04 AM

Here's a nice little test hit to give you some of that high RPM noise:

acammer · 07-12-2022, 10:05 AM

And here is a good couple minute drive with a data overlay and some conversation about driveability with a "big" camshaft. Spoiler - not bad at all!

CamaroDreams76 · 07-12-2022, 11:10 AM

Milled heads i assume?

Either way, 550 on a SBE LS3. Insane, well done

acammer · 07-12-2022, 11:39 AM

Quote:

Originally Posted by CamaroDreams76

Milled heads i assume?

Either way, 550 on a SBE LS3. Insane, well done

We're at a 65cc chamber and 11.3:1 compression with this setup. We're able to do that, with even more camshaft than our biggest cam for OEM head combination. The results speak for themselves.

What is the Max 2.0?

Years ago at GPI we used to offer an LS7 heads/intake and cam setup for LS3/L99 cars. It worked very well, and would make a little more power than a good LS3 heads/cam car. But it had some compromises about it that we weren't totally satisfied with. So, we redesigned it.

The new version, we're calling it Max Package 2.0, uses a Brodix BR7 casting (aftermarket LS7 head) which we do our own finish work on to set the port size/profile, and valve sizes to what we think is about perfect for the bore size of an LS3. It's a 12* valve angle, which helps us run both more camshaft and less combustion chamber (65cc, 11.3:1 on a SBE LS3) than you can with a stock bottom end and LS3 heads. 1.8 LS7 style rockers, LS7 ports, all the goodness of that head design but for the bore of an LS3.

It pairs with a few different LS7 intake manifolds, we have the LSXR on my car, but a hi-ram is always an option, and an MSD Atomic can be made to fit with a little clearance on the manifold. 103mm TB is the way to go with any of those manifolds.

Using the LSXR intake, it makes about 10% more power than a max effort cam/ported LS3 heads/stock intake car.

Chris49066SS · 07-12-2022, 01:22 PM

What a thing of beauty! GPI ftw!!!

CamaroDreams76 · 07-12-2022, 02:58 PM

Just watched the videos. Makes me miss my car. Hasn't went anywhere, just the clutch met its maker

1JEWLDSSRS · 07-12-2022, 03:03 PM

Man Andrew, that is totally insane!!! You guys are the BEST!! Awesome job guys!!

Ashen 6.2 · 07-12-2022, 05:56 PM

freaking insane!

morepowerjoe · 07-14-2022, 05:24 AM

That thing sounds Awesome!

gunchamp · 07-14-2022, 12:08 PM

GPI is top notch! I have the max on mine with a supercharger, among many other mods and this thing is insane. If its an improvement on the original, even crazier yet as I can vouch for the original being a badass setup!

gunchamp · 07-14-2022, 12:09 PM

Aqua Blue RS/SS · 08-06-2022, 11:07 PM

Awesome work guys. Andrew your car sounds amazing screaming thru the gears! When I’m ready GPI is where I’m going for the go fast stuff.

07-12-2022, 09:54 AM	#1
acammer GPI Sales Consultant Drives: 2011 Camaro 2SS SGM Join Date: Jul 2016 Location: Weedsport, NY Posts: 2,794 View My Garage	Finally - GPI Max Package 2.0 is LIVE. SBE NA LS3 - 551whp It's finally live guys! Max Package 2.0 is OUT! Been waiting a long time to share this, but we made 551whp on my SBE LS3. No flycuts. Pump 93 octane. Untouched LS7 LSXR manifold. No smoke and mirrors, just stanky, bolt on and go NA power that fits under the hood and delivers the goods! Here is the old SS3 and ported rod mod vs. the Max 2.0. Look at the power curve, yes we made a good peak number, but more-over, we more or less matched the old setup down low, spanked it up top, and stretched it out another 500+rpm. This thing runs and drives awesome. I've got 2,400+ miles on this setup already, and still haven't wiped the grin off my face. For a heavy all motor car, this thing moves. I'm sure you've got questions, take a look through the article as we got a great write-up with a ton of information there. https://gwatneyperformance.com/intro...olt-on-setups/ If it's something you think you want, here's where you can configure one for yourself: https://gwatneyperformance.com/produ...amshaft/ref/3/ Of course, you can always reach out with questions too - andrew@gwatneyperformance.com Attached Images __________________ GPI Max Package 2.0: Brodix BR7 heads/GPI porting, MAX3 cam, ST2116LSR, BSR Max Lift rockers, LS7 LSXR with 103mm TB, Vararam OTR, Mcleod RXT, G-Force/Strange 9" IRS setup with 4.63 gear. 551whp, 11.1@124mph. *Got a question about a GPI product? Feel free to shoot me a message!*

07-12-2022, 11:10 AM	#4
CamaroDreams76 Tri-County Camaro SWFL Drives: 2013 IOM 2SS/RS/1LE Join Date: Apr 2013 Location: South West FL Posts: 3,082 View My Garage	Milled heads i assume? Either way, 550 on a SBE LS3. Insane, well done __________________ Just bolt ons........ https://www.camaro5.com/forums/showthread.php?t=343023

07-12-2022, 01:22 PM	#6
Chris49066SS Drives: 2010 SS L99 Join Date: Sep 2018 Location: Missouri Posts: 1,634	What a thing of beauty! GPI ftw!!! __________________ Previous PB:11.079 @ 122.99mph.. New setup time: TBD The 11.079 pass: https://youtu.be/pz27Zq54t_E Build thread - www.camaro5.com/forums/showthread.php?t=555371

07-12-2022, 02:58 PM	#7
CamaroDreams76 Tri-County Camaro SWFL Drives: 2013 IOM 2SS/RS/1LE Join Date: Apr 2013 Location: South West FL Posts: 3,082 View My Garage	Just watched the videos. Makes me miss my car. Hasn't went anywhere, just the clutch met its maker __________________ Just bolt ons........ https://www.camaro5.com/forums/showthread.php?t=343023

07-12-2022, 03:03 PM	#8
1JEWLDSSRS Drives: 2011 SS-RS Join Date: May 2011 Location: FLORIDA Posts: 11,449	Man Andrew, that is totally insane!!! You guys are the BEST!! Awesome job guys!! __________________ TSP STAGE 3 CAM,231/246 @112 LSA 614/641 LIFT, CIRCLE D 5C-4200-4500 CONVERTER,LOD INTAKE.CORSA EXHAUST. DSS 1 PC DS. PEGASUS SOLID CRADLE MOUNTS. 486RWHP/475RWTQ.LOTS MORE.

07-12-2022, 05:56 PM	#9
Ashen 6.2 Drives: 2014 Camaro Z/SS Join Date: May 2014 Location: NW Arkansas Posts: 2,000 View My Garage	freaking insane! __________________ 2014 Camaro SS L99, Ashen Grey w/Black Leather - Build thread - http://www.camaro5.com/forums/showthread.php?t=491561 Mods - GPI 416 w/Custom Grind Cam, Ported Heads & Tuned by Ben, Holley Dominator ECU, Mag Heartbeat, ZL1 Fuel Pump & DSX Aux Pump, NW 103 TB, FIC 1650's, Alky Meth, Circle D 3600 Triple Disc, Kooks Headers, Viking Coil Overs & all the BMR Goodies in the rear, Zl1 3.23 Diff, DSS Axles, Gulfcoast Driveshaft, Hendrix Offset Diff Bushings, AFE Solid Subframe Bushings, 875HP/843TQ 5FDP

07-14-2022, 05:24 AM	#10
morepowerjoe Drives: 2012 Chevrolet Camaro l99 Join Date: Aug 2020 Location: Austin, TX Posts: 2,109	That thing sounds Awesome! __________________ DSS FX Forged Pistons, Eagle ESP L19 Forged Rods, ARP Head and Main Studs, TSP PRC 260 CNC Ported Heads milled .030, Cometic .040 Head Gaskets, GPI SS3 VVT Camshaft, GM Performance Racing Lifters, CHE Trunnions , Molly Pushrods, Melling 10355HV Oil Pump, Cold Air Inductions CAI, Fast LSXR Intake Manifold, Nick Williams 103 TB, TSP 1 7/8" Longtubes with 3" TSP Exhaust, ZL1 Fuel Pump, Mishimoto Radiator, Mishimoto Oil Cooler, Tru Cool 40k Tranny Cooler, 3600 Circle D Converter, Fluid Dynamics Balancer Build Thread https://www.camaro5.com/forums/showthread.php?t=609817

07-14-2022, 12:08 PM	#11
gunchamp Drives: 15 Camaro SS Join Date: Oct 2018 Location: Mountains of central PA Posts: 1,442	GPI is top notch! I have the max on mine with a supercharger, among many other mods and this thing is insane. If its an improvement on the original, even crazier yet as I can vouch for the original being a badass setup! __________________ 15 Camaro SS- GPI max top end, ESS Vortech V3 9psi, ID 1050s, ZL1 pump, JMS bap, Long tubes, Corsa extreme, Circle D pro 5C, 391 rear, DSS carbon drive shaft, poly cradle bushings, tuned by Ted Jannetty and much much more

08-06-2022, 11:07 PM	#13
Aqua Blue RS/SS Drives: ABM #93 Join Date: Oct 2018 Location: Lotaburger Posts: 2,696	Awesome work guys. Andrew your car sounds amazing screaming thru the gears! When I’m ready GPI is where I’m going for the go fast stuff. __________________ ABM #2399 2SS/RS:SOLD ABM #93 2SS/RS Black Rally stripes, Titanium Interior 4,000 miles: GM GFX side skirts and diffuser waiting on paint, GM dovetail, GM heritage, RPI ZL1 style splitter. ‘87 IROC-Z Iroc blue. all original unmolested with 50K miles.