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View Poll Results: Estimate WHP after GPI mods/tune. Sitting at 390 w/ LTH, HiFlo cats, vararam cai.
<450 0 0%
450-475 11 57.89%
475-500 6 31.58%
500+ 2 10.53%
Voters: 19. You may not vote on this poll

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Old 08-04-2021, 10:59 AM   #43
silversleeper
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Quote:
Originally Posted by General Tsouís Chicken View Post
Iíve heard that high of a gear makes it extremely difficult to hook with an automatic. Thatís all. Iím doing GPI stage 2 and decided to go with 3.45. My understanding is better hooking and less shifts in the quarter mile.
Depends, sticky tires, drag strip, supercharged?


There is a run a member posted, fasnuf name on youtube where his NA red Camaro hooks and makes a nice run down the strip. IIRC it has a converter and 3.91s on a prepared strip and sticky tires.


On the street with high hp supercharged I wouldn't bother as you said, just tire spin. On NA street depends on how serious you are and if you run extra sticky tires.
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Old 08-04-2021, 12:03 PM   #44
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Quote:
Originally Posted by silversleeper View Post
Depends, sticky tires, drag strip, supercharged?


There is a run a member posted, fasnuf name on youtube where his NA red Camaro hooks and makes a nice run down the strip. IIRC it has a converter and 3.91s on a prepared strip and sticky tires.


On the street with high hp supercharged I wouldn't bother as you said, just tire spin. On NA street depends on how serious you are and if you run extra sticky tires.
I guess I was told 3.45 because Iíll be doing a Whipple with the stage 2 cam. Makes more sense now that you point that out. 3.91 would probably be better with a cam.
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Old 08-04-2021, 03:35 PM   #45
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Originally Posted by LCPLPunk View Post
2013s have hydraulic steering, 2010/11s don't. Please let us know what GPI thinks about them, I have one I'm waiting to install.


As far as gears...man, they just make the car want to pull on the highway. I just did a 5 hour drive today and wasn't even hitting it and the car just wanted to go, it was just smooth.
Stopped in GPI today- James says they sell a lot of the Powerbond 25% UDPs to 10/11 owners and they just don't see any issues coming back regarding engine cooling or battery charging, etc. However he does plan to add in a 180 degree thermostat to my build for good measure.
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2010 2SS/RS A6. "SINISTER"
GPI SS3 VVT Cam, 228/246 / Circle D 4C 36-3800 Stall / Stainless Works LTs / High Flow Cats / X-pipe / Vararam CAI with Power Wedge / Soler 95mm PTB / AAM 3.91 gear / GPI Ported Heads / GPI Ported Rod Mod / CHE Trunnions / GPI 5/16" hardened push rods, 7.425"/ Chevrolet Racing Lifters / Derale Xmsn cooler / Powerbond 25% UDP / Mishimoto catch can / iDatalink Maestro with Pioneer DMH-W4600NEX control head and backup cam. GPI HP Performance Tune.

2011 2LT RS A6 "PARA BELLUM" Totalled- hit by red-light runner. RIP.
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Old 08-06-2021, 04:59 PM   #46
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Parts awaiting the big day. Friday the 13th, LoL.
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2010 2SS/RS A6. "SINISTER"
GPI SS3 VVT Cam, 228/246 / Circle D 4C 36-3800 Stall / Stainless Works LTs / High Flow Cats / X-pipe / Vararam CAI with Power Wedge / Soler 95mm PTB / AAM 3.91 gear / GPI Ported Heads / GPI Ported Rod Mod / CHE Trunnions / GPI 5/16" hardened push rods, 7.425"/ Chevrolet Racing Lifters / Derale Xmsn cooler / Powerbond 25% UDP / Mishimoto catch can / iDatalink Maestro with Pioneer DMH-W4600NEX control head and backup cam. GPI HP Performance Tune.

2011 2LT RS A6 "PARA BELLUM" Totalled- hit by red-light runner. RIP.
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Old 08-06-2021, 05:51 PM   #47
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Oooohoeee, gonna be awesome!!!
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R2C CAI / Apex Scoop / VMAX Ported TB / Speed Engineering LTHs / X-pipe / GPI port/rod-mod intake manifold / Circle D 3200 278mm Converter / 3.91 gears / DynoSteve tuned / 1LE Shocks/Struts/Toe Links / ZL1 Rear Sway Bar / Z/28 Trailing arms / Prothane Radius Arm & Subframe Bushings / BMR UCA Bracket, Steering rack bushing / B&M Tranny Cooler / RX Catch Can / Jannetty Tranny Dipstick / 2012+ Heater Hose / 2013+ Rearview Mirror / Fuel rail flip / Drake shifter / Oil Cooler Delete
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Old 08-13-2021, 10:30 AM   #48
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Ok, She's in GPI's capable hands now
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2010 2SS/RS A6. "SINISTER"
GPI SS3 VVT Cam, 228/246 / Circle D 4C 36-3800 Stall / Stainless Works LTs / High Flow Cats / X-pipe / Vararam CAI with Power Wedge / Soler 95mm PTB / AAM 3.91 gear / GPI Ported Heads / GPI Ported Rod Mod / CHE Trunnions / GPI 5/16" hardened push rods, 7.425"/ Chevrolet Racing Lifters / Derale Xmsn cooler / Powerbond 25% UDP / Mishimoto catch can / iDatalink Maestro with Pioneer DMH-W4600NEX control head and backup cam. GPI HP Performance Tune.

2011 2LT RS A6 "PARA BELLUM" Totalled- hit by red-light runner. RIP.
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Old 08-13-2021, 10:36 AM   #49
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Awesome! Whats the ETA to be completed?
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Mods - GPI Tuned (Ben), GPI SS3 PD Cam, GPI Ported Heads, Mag Heartbeat, ZL1 Fuel Pump, ADM FPCM, DSX Aux Pump & Flex Fuel, ID 1050's, Circle D 3600 Triple Disc, RPM 5Ē CAI, Kooks Headers, Solo Cat Back, Z28 Grill, Aero & Body Package, BMR Motor Mounts, 1" Lowering Springs & all the BMR Goodies in the rear, Hendrixs Offset Diff Bushings, AFE Solid Subframe Bushings, MRR228 & VMS Drag Wheels, Eaton Tru-Trac, Hurst Roll Control.
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Old 08-13-2021, 10:36 AM   #50
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Quote:
Originally Posted by Armyavi8r View Post
Ok, She's in GPI's capable hands now
Sweet. Looking forward to this build results. GPI cams are magnificent.
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GPI SS2 VVT cam, ECS Novi 1500 supercharger, Corsa Extreme, Detroit Speed and BMR suspension, Circle D triple disc, Melling oil pump, LS2 chain tensioner, ATI 10% UD, DSX E85 kit, High Energy coils, BTR springs, LS2 Lifter trays, Titanium retainers, hardened push rods, FIC 1000 injectors, ZL1 pump, Mighty Mouse catch can, AEM gauges, Tial BOV, Richmond 3.91 gears, Custom gauge bezels, Speed Engineering headers, Stainless Works HF cats, DSX Aux pump, 710rwhp on E85.
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Old 08-13-2021, 10:41 AM   #51
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Looking forward to this build as well as I think I will eventually go this route too.
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GPI SS1 Camshaft with vvt, GM Performance racing lifters, Comp CAMS trunnion upgrade, TSP Chrome Molly pushrods, Pac Polished .660 valve springs, Melling 10355HV oil pump, Cold Air Inductions cai, TSP 1 7/8" longtubes with 3" exhaust, true cool 40k tranny cooler
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Old 08-13-2021, 11:06 AM   #52
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Quote:
Originally Posted by Ashen 6.2 View Post
Awesome! Whats the ETA to be completed?
I'm planning to pick up on the 31st. Might be done sooner, but they are also in the middle of moving to their new location a few miles away, so we'll see how it goes.
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2010 2SS/RS A6. "SINISTER"
GPI SS3 VVT Cam, 228/246 / Circle D 4C 36-3800 Stall / Stainless Works LTs / High Flow Cats / X-pipe / Vararam CAI with Power Wedge / Soler 95mm PTB / AAM 3.91 gear / GPI Ported Heads / GPI Ported Rod Mod / CHE Trunnions / GPI 5/16" hardened push rods, 7.425"/ Chevrolet Racing Lifters / Derale Xmsn cooler / Powerbond 25% UDP / Mishimoto catch can / iDatalink Maestro with Pioneer DMH-W4600NEX control head and backup cam. GPI HP Performance Tune.

2011 2LT RS A6 "PARA BELLUM" Totalled- hit by red-light runner. RIP.
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Old 08-13-2021, 02:08 PM   #53
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Can't wait to see the transformation.
What type of aircraft do you fly, if you don't mind me asking?
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Old 08-13-2021, 03:07 PM   #54
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Originally Posted by Redrockit View Post
Can't wait to see the transformation.
What type of aircraft do you fly, if you don't mind me asking?
I've flown Chinooks, Sherpas, Citations and now Lakotas.
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2010 2SS/RS A6. "SINISTER"
GPI SS3 VVT Cam, 228/246 / Circle D 4C 36-3800 Stall / Stainless Works LTs / High Flow Cats / X-pipe / Vararam CAI with Power Wedge / Soler 95mm PTB / AAM 3.91 gear / GPI Ported Heads / GPI Ported Rod Mod / CHE Trunnions / GPI 5/16" hardened push rods, 7.425"/ Chevrolet Racing Lifters / Derale Xmsn cooler / Powerbond 25% UDP / Mishimoto catch can / iDatalink Maestro with Pioneer DMH-W4600NEX control head and backup cam. GPI HP Performance Tune.

2011 2LT RS A6 "PARA BELLUM" Totalled- hit by red-light runner. RIP.
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Old 08-25-2021, 11:24 AM   #55
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Update. Most of the work is complete. GPI machinists finishing up the cylinder heads, should be done today so dyno tomorrow or Friday. Last chance to guess WHP on the poll! Just a recap of what was done over the last week: GPI SS3 VVT cam, Circle D 36-3800 stall, GPI ported cylinder heads, GPI ported/rod mod manifold, 25% UDP, 3.91 gear, xmsn cooler, catch can, 180į thermostat, additional ground cable, etc. Will post results soon.
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2010 2SS/RS A6. "SINISTER"
GPI SS3 VVT Cam, 228/246 / Circle D 4C 36-3800 Stall / Stainless Works LTs / High Flow Cats / X-pipe / Vararam CAI with Power Wedge / Soler 95mm PTB / AAM 3.91 gear / GPI Ported Heads / GPI Ported Rod Mod / CHE Trunnions / GPI 5/16" hardened push rods, 7.425"/ Chevrolet Racing Lifters / Derale Xmsn cooler / Powerbond 25% UDP / Mishimoto catch can / iDatalink Maestro with Pioneer DMH-W4600NEX control head and backup cam. GPI HP Performance Tune.

2011 2LT RS A6 "PARA BELLUM" Totalled- hit by red-light runner. RIP.
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Old 08-25-2021, 11:46 AM   #56
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Your initial 390 whp is 20 rwhp or so too high. I would say your first mods gave you 365 to 370 whp. I'm betting your ca will be 470 whp when. That's almost 100 whp increase.
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EPS CUSTOM GRIND BLOWER CAM....K@N CAI....VMAX PTB.....FRANKENSTEIN STAGE 2 HEADS ...1 7/8 STAINLESS POWER CATTED LONGTUBES HEADERS...CORSA XTREME 3 INCH CATBACK.....CIRCLE D 3200 STALL....391 GEARS ..NITTO 555R 305 35 20 DRAG RADIALS..AGP PERFORMANCE DYNO TUNED. 463 WHP 428 FTLBS TORQUE.
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