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Old 02-17-2018, 10:31 PM   #1
Rhino79



 
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GPI MAX Cam/Head Results

The most powerful ls3 top end available using plastic factory style manifold!

Almost 150 hp gain over stock ls3 with only a 226 intake duration cam.

The ls7 Head gives us a lot of room for milling to increase compression, and it allows us to have incredible mid to upper rpm power and rev range thanks to some amazing ports.

We are developing cams specifically for this head/intake configuration.

This is the alpha package, and for the max effort drag guys, we have combos available utilizing cid intake, high ram, and or solid roller applications. Expect another 40 plus hp in those applications.


Last edited by Rhino79; 02-17-2018 at 10:58 PM.
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Old 02-18-2018, 07:41 AM   #2
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Fantastic results Ryan & Aaron! Looking forward to seeing how this package performs on a L99 w/VVT!
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Mods - GPI Tune (Rhino79), GPI SS2VVT Cam, GPI RodMod Intake, CHE Trunion Upgrade, Bo White Ported TB, Holley Fuel Rails, B&M Transmission Pan, JRE Trans Dipstick, Circle D 3600 Single Disc Converter, ADM CAI, ADM Scoop, ADM Trans Cooler, Kooks Headers, Solo Cat Back, Elite Catch Can, Z28 Grill, Z28 Aero Package; Z/28 Rockers, Z28 Flares & Diffuser, BMR 1" Lowering Springs, ZL1 Addons Splitter Guards, MRR228 Wheels, Eaton Tru-Trac, Hurst Roll Control.
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Old 02-18-2018, 08:01 AM   #3
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How would a package like this be on a daily driver, one that is used for autocross and the occasional track day? Also, what about maintenance intervals and inspection requirements?

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Old 02-18-2018, 08:07 AM   #4
Rhino79



 
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This package will require no more maintenance than ours or any other cammed setup. We simply have developed a head/cam combo that performs at a higher level.

The rpm range is extended with this package, so autocross/roadcourse/ and drag will all reap the rewards of the rpm capability.
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Old 02-18-2018, 09:06 AM   #5
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NICE!
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Kooks stepped headers & Solo XL Cat-back
ADM CAI w/race scoop & Rotofab w/w relo
Mighty Mouse PVC catch can
GPI VVT SS1 cam and CNC ported heads milled .30
BTR .660 springs, Straub solid bushing trunions
GPI rod-mod intake with I-M heat sheild
Tuned by Ryno at GPI - 455 RWHP / 416 lb-ft
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Old 02-18-2018, 06:08 PM   #6
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Nice package
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BOLT ONS TO THE EXTREME, A FEW INTERNAL MODS (16 1.85 ROCKERS & PSI1511 SPRINGS AND A CRANK SCRAPER) AND E85 BASICALLY A MAX EFFORT STOCK HEADS STOCK CAM CAR

Best ET 10.58 @ 131.8 stock heads and stock cam
Best MPH 132
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Old 02-18-2018, 06:33 PM   #7
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Is it a small bore LS7 head? Do you have or are you looking into road race stable cams? What kinds of valves: titanium, sodium filled, solid? I'm thinking low lash might be necessary to have road race stability plus lift numbers that would benefit from these heads or is it more about the compression ratio change?
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Old 02-18-2018, 09:30 PM   #8
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Quote:
Originally Posted by Synner View Post
Is it a small bore LS7 head? Do you have or are you looking into road race stable cams? What kinds of valves: titanium, sodium filled, solid? I'm thinking low lash might be necessary to have road race stability plus lift numbers that would benefit from these heads or is it more about the compression ratio change?
It is a ls7 casting with some tweaks to work in med bore applications. As with any of our heads, you can option out ti, hollow stem, solid stem, inconel etc...
as with any ls7 Head, the pedestals need to be milled off for shaft mounts if you want to make running a solid worth your while. (Big lift).

We have hyd lobes that are very stable into the 7000s. We often run lower lift stuff on road race stuff where sustained high rpm is needed, not necessarily the last 1 percent of power.
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Old 02-19-2018, 09:49 AM   #9
christianchevell
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Yup 7 grands a good cut off, I would love to see these heads teamed up with a stroker LS and the new intake made by LOD speedworks ;as I thought they were going to make a ls7 version ????? of their new intake as they are making new tops for it I heard and I thought a ls7 version?. I would think the combination of stroker, a more aggressive cam ,the heads and that larger runner intake would all be good......especially with a radical stroker cam shaft to use even more air and fuel.... Anyway thats my dream...dream big N/A....

And have not heard anything much on the LS7 version of their intake since they initially announced on here and showed us the intake they now have in production. SO some day I may have to have those heads you've made hopefully down the line with their intake but.....may have to be airforce like I was thinking. Still though the options are so nice to have for the future to spend money and make more power N/A or even FI or juiced bigger potential ........SIGH...... damn daughters college education has me down for about 4 more years.....
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Old 02-21-2018, 08:52 PM   #10
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We have made pulls to 7700 rpm. As long as the valvetrain is stable, the factory ls7 manifold will go there. Of course a carb style intake like the cid would be the best for power, but very hard to package.
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Old 02-22-2018, 06:05 AM   #11
acammer
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Really nice setup. You guys always seem to have the drop on the competition with the absolute top performing hardware. Can't wait to see some of these hit the track!
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Old 02-22-2018, 10:52 AM   #12
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Quote:
Originally Posted by acammer View Post
Really nice setup. You guys always seem to have the drop on the competition with the absolute top performing hardware. Can't wait to see some of these hit the track!
Thats what we strive for. I want to be at the top of the game performance/durability wise. I dont want to blow smoke with products that dont deliver. We are known for kicking ass, and that will stay the same!
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Old 02-22-2018, 12:56 PM   #13
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i would love to see this with full zoot treatment on the gentlemens 1LE. Crank scraper, Electric water pump, short belt and a vacuum pump on some chp+ I bet it would crack 570! 545 is stout with this left on the table ohhhh and at least a RPS clutch Great RND guys
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BOLT ONS TO THE EXTREME, A FEW INTERNAL MODS (16 1.85 ROCKERS & PSI1511 SPRINGS AND A CRANK SCRAPER) AND E85 BASICALLY A MAX EFFORT STOCK HEADS STOCK CAM CAR

Best ET 10.58 @ 131.8 stock heads and stock cam
Best MPH 132
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Old 02-22-2018, 01:25 PM   #14
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are these actual ls7 heads or did you guys design your own? either way those are awesome gains!
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