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01-05-2020, 08:34 AM
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#1 |
 Drives: 2011 ss ls3 Join Date: May 2011
Location: canada
Posts: 15
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Strange dyno numbers on ls3 with lsa
Hi, are there any tuners out there that can explain why my car dynoed with higher torque numbers than hp? Ive looked at many ls3 conversions and I have yet to see one like mine. This is a chassis dyno, stock ls3 with bbk headers, Mahle pistons 10.4 to 1, 2.55 upper pulley,650cc injectors, zl1 fuel pump. 6 sp manual.Thanks
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01-05-2020, 09:22 AM
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#2 |
 
Drives: 11 camaro Join Date: Mar 2017
Location: Canton ga
Posts: 129
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When I installed the eldelbrock 2.3 pd blower on my stock ls3, it turned 522 rwhp and 566 rwtq. All motors vary in production.
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2011 1SS/ Thompson mtrsprts 416,Katech rotate assembly and cnc ls3 heads. Ferrera st. valves,BTR 685 Spr. F1A Procharger,3.70 pulley on 12 rib.Holley aux fuel pump,ZL1 fp and fpcm,dual alky control,Vmax TB,DSX E-85 sensor, fic1300 inj.Lsxperts custom cam,melling OP,mishimoto dual pass HX, ARH 2" headers, MD 4l80e, FTI 3200 stall,3:73 zl1 cradle, BC coil overs ,pfadt sway bars, EBC brakes and slotted rotors: 843rwhp tuned by LSXPERTS
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01-05-2020, 09:26 AM
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#3 |
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Drives: 2011 ss ls3 Join Date: May 2011
Location: canada
Posts: 15
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Doesn't make sense why other lsa conversions with the same kit produce different hp and torque curves. Thanks for the feed back, I feel something is amiss,
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01-05-2020, 08:11 PM
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#4 |
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Drives: 2014 SS Convertible Join Date: Jun 2015
Location: Michigan
Posts: 175
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What cam are you running?
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Engine: LSA Conversion, Ported Heads, 1 7/8 headers, VMS 2.5 Cam, Roto Fab intake, ADM Scoop. BMR engine mounts, 3.91
628/525 Suspension: Koni orange, (BMR everything) 1" drop springs, toe rods, trailer arms, non adjustable LCR, FE4 sway bars, sub frame connectors, delrin sub frame bushing and upper control arm bushings. Front bushings. |
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01-06-2020, 11:39 AM
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#5 |
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Drives: 2011 ss ls3 Join Date: May 2011
Location: canada
Posts: 15
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Stock ls3
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01-07-2020, 07:17 AM
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#6 | |
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Drives: 2014 SS Convertible Join Date: Jun 2015
Location: Michigan
Posts: 175
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Quote:
I'm putting down more power than you on a stock ls3 and a LSA stock pulley at only 5psi, but I've got ported heads and a fairly aggressive cam. You're making more torque down low which also makes me believe its due to the cam. Go through a BTR blower cam in and it will change everything.
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Engine: LSA Conversion, Ported Heads, 1 7/8 headers, VMS 2.5 Cam, Roto Fab intake, ADM Scoop. BMR engine mounts, 3.91
628/525 Suspension: Koni orange, (BMR everything) 1" drop springs, toe rods, trailer arms, non adjustable LCR, FE4 sway bars, sub frame connectors, delrin sub frame bushing and upper control arm bushings. Front bushings. |
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01-07-2020, 07:42 AM
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#7 | |
 
Drives: BLUE CAMARO ZL1 1LE M6 Join Date: Jun 2009
Location: ON THE DYNO WATERBURY CT.
Posts: 15,225
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Quote:
RPM, Boost, and AFR would be more useful info on the dyno sheet along with HP and TQ. Then all will have a clearer picture of the state of tune and combo. LS3 with stock cam and headers typically only make 560 RWHP so your in the ball park. The 1900 blower hits harder at lower RPM than say a Maggie 2300 or a Whipple 2900, so the torque curves will be different for each blower. Larger blowers spinning slower make more HP than TQ Small blowers spinning fast make more TQ than HP. Ted.
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www.jannettyracing.com
Celebrating 37 years Performance parts, Installation, Fabrication, Dyno tuning, Remote custom tuning, and alignments. 203-753-7223 Waterbury CT. 06705 email tedj@jannettyracing.com |
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01-07-2020, 09:06 AM
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#8 |
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Drives: 2011 ss ls3 Join Date: May 2011
Location: canada
Posts: 15
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Hi Ted, would a cam increase the HP and would retain the torque ? If so what cam specs would you recommend? I thought about using the LS9 cam but didn't think it would do much.
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01-07-2020, 12:18 PM
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#9 |
         
Drives: 2010 2SS, 2017 Silverado LTZ Join Date: Jan 2007
Location: Denver,PA
Posts: 3,195
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In 2010 when I installed the Edelbrock E-Force S/C I got 546/rwhp and 522/rwtq on a Dyno Jet .
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2010 2SS/RS Victory Red, MN6, 1-7/8 Kooks LT Headers, SLP Axle Back, Edelbrock E-Force S/C, ZL1 Fuel Pump, 72# Injectors, JRE fuel rail upgrade, Roto-Fab CAI, Elite Catch Can, Billet Hurst Shifter, DSS 1000HP axles, Spohn Trailing Arms, Toe Links, Lower Control Arms. Chrome American Racing Torq-Thrust wheels. 546/rwhp & 522/rwtq & 10.9# boost Tune by Jeremy Formato.
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