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05-11-2021, 06:09 PM
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#1 |
 
Drives: 2010 Chevrolet Camaro SS Join Date: Sep 2019
Location: Columbia, South Carolina
Posts: 223
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3.91 gears on a L99 -> LS3 conversion?
I know the cam loses a lot of its power in the lower rpms, figuring a higher gear will keep it up in the nightfury sweetspot.
Thoughts? Plans for 416 stroker and CNC ported LS9 heads sometime. Will also supercharge it, but what should I do for the diff?
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2010 Camaro 2SS/RS:
Cyber gray matte wrap, Danti Lambo style louvers, Granatelli Pro-stock look wing B&M transcooler, Mishimoto oil cooler, Mishimoto catchcan, Borla/Pypebomb axle back L99 to LS3 conversion, Vararam ram air intake, BTR Nightfury cam, Johnson lifters, LS7 injectors, Circle D 3200 stall converter, Kooks LT headers, Custom X-pipe |
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05-11-2021, 07:34 PM
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#2 |
            
Drives: 2011 SS-RS Join Date: May 2011
Location: FLORIDA
Posts: 11,442
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Big converter!! FTW...
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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.
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05-11-2021, 07:41 PM
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#3 | |
Drives: 15 Camaro SS Join Date: Oct 2018
Location: Mountains of central PA
Posts: 1,442
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Quote:
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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
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05-11-2021, 08:06 PM
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#4 | |
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Drives: 2011 SS-RS Join Date: May 2011
Location: FLORIDA
Posts: 11,442
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Quote:
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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.
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05-11-2021, 08:55 PM
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#5 |
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Drives: 2010 Chevrolet Camaro SS Join Date: Sep 2019
Location: Columbia, South Carolina
Posts: 223
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I've done the converter actually, it went to a transmission shop for a rebuild...I'm not sure what stall they stuck in the thing though.
All I know is that is is a dual disc converter, and it works well enough.
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2010 Camaro 2SS/RS:
Cyber gray matte wrap, Danti Lambo style louvers, Granatelli Pro-stock look wing B&M transcooler, Mishimoto oil cooler, Mishimoto catchcan, Borla/Pypebomb axle back L99 to LS3 conversion, Vararam ram air intake, BTR Nightfury cam, Johnson lifters, LS7 injectors, Circle D 3200 stall converter, Kooks LT headers, Custom X-pipe |
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05-12-2021, 06:23 AM
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#6 |
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Evil Genius of Chevrolet
Drives: 2017 Z06, 2019 XTS, 2013 SS Join Date: Feb 2017
Location: New York
Posts: 3,260
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My cam loves the 391 gears. So does my supercharger.
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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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05-12-2021, 09:19 AM
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#7 | |
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Drives: 2010 Chevrolet Camaro SS Join Date: Sep 2019
Location: Columbia, South Carolina
Posts: 223
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Quote:
__________________
2010 Camaro 2SS/RS:
Cyber gray matte wrap, Danti Lambo style louvers, Granatelli Pro-stock look wing B&M transcooler, Mishimoto oil cooler, Mishimoto catchcan, Borla/Pypebomb axle back L99 to LS3 conversion, Vararam ram air intake, BTR Nightfury cam, Johnson lifters, LS7 injectors, Circle D 3200 stall converter, Kooks LT headers, Custom X-pipe |
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05-12-2021, 09:31 AM
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#8 | |
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Evil Genius of Chevrolet
Drives: 2017 Z06, 2019 XTS, 2013 SS Join Date: Feb 2017
Location: New York
Posts: 3,260
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Quote:
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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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05-14-2021, 02:36 AM
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#9 |
Drives: Ashen grey, 1SS, L99 Join Date: Aug 2016
Location: Oklahoma
Posts: 527
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Stock 6l80s do not like pulling 5th, do it at your own risk. 3.91s will have you doing that a lot. I have a 3.45 diff on the shelf for when my stroker gets here.
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Roto-fab CAI, Nick Williams 102mm TB, LOD X1 V3 intake manifold, GMPP LS3 heads, Night Fury cam, TSP 2 long tubes, Corsa ZL-1 catback, Nitrous Outlet 102mm plate kit/150 shot, NGK BR7EF plugs with Taylor plug wires, DSX flex fuel kit, ZL-1 fuel pump and injectors, B&M deep trans pan, Yank 3400 converter, 3.45s with BMR Delrin bushings, mishimoto 169° Thermostat, GM ground effects, T-Rex upper grill, Z/28 Spoiler, Lolly pop Lime brake calipers, ZL1 10 spoke wheels, 12 subwoofer, and custom paint matched interior.
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05-14-2021, 08:21 AM
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#10 |
Drives: 2011 Camaro 2SS LS3 Whipple Join Date: May 2019
Location: Connecticut
Posts: 1,925
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You won't like those gears on the street once FI and a stroker. Bye Bye traction. Under 550-600WHP I would say yes! above. No for street, Yes for track.
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Whipple 2.9 CAI ID1050x injectors ZL1 Pump JRE FPCM JMS Voltage booster JRE Rough Idle blower cam BTR .660 springs CHE trunnion kit 1 7/8 Speed Engineering Borla Atak JRE scoop 1.5" lowering springs BMR trailing arms and toe links Cradle inserts 704WHP 603WTQ 93 octane
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05-14-2021, 11:47 AM
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#11 | ||
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Drives: 2010 Chevrolet Camaro SS Join Date: Sep 2019
Location: Columbia, South Carolina
Posts: 223
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Quote:
Quote:
__________________
2010 Camaro 2SS/RS:
Cyber gray matte wrap, Danti Lambo style louvers, Granatelli Pro-stock look wing B&M transcooler, Mishimoto oil cooler, Mishimoto catchcan, Borla/Pypebomb axle back L99 to LS3 conversion, Vararam ram air intake, BTR Nightfury cam, Johnson lifters, LS7 injectors, Circle D 3200 stall converter, Kooks LT headers, Custom X-pipe |
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05-14-2021, 12:53 PM
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#12 | |
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Drives: 2011 Camaro 2SS LS3 Whipple Join Date: May 2019
Location: Connecticut
Posts: 1,925
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It can be embarrassing. I have 3.45's and a Bolt on mustang wanted to play on the highway. well crummy road and I was spinning to 80mph 3rd hooked and I blew past him but spinning sucks when you want to go...
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Whipple 2.9 CAI ID1050x injectors ZL1 Pump JRE FPCM JMS Voltage booster JRE Rough Idle blower cam BTR .660 springs CHE trunnion kit 1 7/8 Speed Engineering Borla Atak JRE scoop 1.5" lowering springs BMR trailing arms and toe links Cradle inserts 704WHP 603WTQ 93 octane
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05-14-2021, 03:20 PM
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#13 | |
Drives: 2010 SS L99 Join Date: Sep 2018
Location: Missouri
Posts: 1,634
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Quote:
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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  |
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05-14-2021, 05:47 PM
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#14 |
Drives: 2010 Camaro 2SS/RS Join Date: Mar 2016
Location: Indianapolis
Posts: 288
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I might be mistaken but when you go 3.91s on an L99 don't you basically lose 1st gear due to how short the gear is?
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491 hp/438 tq
LS3 Conversion | Comp Cam Custom Grind | Mast Heads | Comp Cam Push Rods | LS7 Timing Chain | 180 Thermostat | Ported Intake | Ported TB | SLP UDP | K & N CAI | Custom 3800 Stall Converter | Aluminum 1 Piece Driveshaft | Kooks 1 7/8" LTH | High Flow Cats | ARH 3" Exhaust | ARH Mufflers | Eibach Lowering Springs | BMR Floor Brace Subframe Connectors with Tunnel Brace | BMR Moly Lower Rear Control Arms | Oracle LED Halo Kit |
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