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03-13-2014, 07:53 AM
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#1 |
 
Drives: 2010 Camaro 2SS/RS Join Date: Dec 2009
Location: Québec, Canada
Posts: 177
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Eforce sc pulley
Hi! I currently have a 3.5" pulley. I want to go with a 3.25 or 3". How much boost is tipically gained for each 1/4 inch smaller? My block is stock also, I dont want to be too hard on it. What would you guys running smaller pulley suggest?
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2010 2ss/rs Ls3, E-force s/c, 3.25'' pulley,Kooks long tubes w/cats, magnaflow 2.5" cat back, Rotofab cai, 65 lbs inj, MSD bap, AEM water/meth, comp cam, 621whp,577 wtq on mustang dyno
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03-13-2014, 08:14 AM
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#2 | |
        
Drives: A Static line to a pack tray & ZL1 Join Date: Feb 2011
Location: Centeral NY
Posts: 2,276
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Pulley
Quote:
Rule of thumb I guess is every .10 = 1lb of boost. What kinda fuel upgrades are you running & injector I see 65lbs in the SIG, what's there duty cycle already? I mean just for more power alone I would get long tubes and and no cats to let your exhaust really flow, and you would probably gain atleast 20rwhp. 578 with your current setup is pretty decent numbers.
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2017 ZL1 A10: 8.84 @ 156 PB
2017 ZL1 A10: Previously FBO 756/761 (9.6 @ 143 1/4) SOLD-2013 ZL1 M6:BTR,LTs,IDs,ATI,RotoFab10.84@129 SOLD-2011 SS M6: Blower, Cam, Alky, LTs. |
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03-13-2014, 08:20 AM
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#3 |
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Drives: 2010 Camaro 2SS/RS Join Date: Dec 2009
Location: Québec, Canada
Posts: 177
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I'm going with zl1 pump and adm fpcm.
I don't remember about duty cycle... will check with my tuner as its been 3 years already...
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2010 2ss/rs Ls3, E-force s/c, 3.25'' pulley,Kooks long tubes w/cats, magnaflow 2.5" cat back, Rotofab cai, 65 lbs inj, MSD bap, AEM water/meth, comp cam, 621whp,577 wtq on mustang dyno
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03-13-2014, 08:28 AM
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#4 | |
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Drives: A Static line to a pack tray & ZL1 Join Date: Feb 2011
Location: Centeral NY
Posts: 2,276
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Quote:
I run the same zl1 pump, adm FPCM, 80lb injectors, and meth. I dynoed with a 3" pulley but backed down to a 3.1 for summer coming up. My fuel system easily supported 640/639 at the wheels, my numbers might seem low, but my AFR is between 10.5-10.7 my tuner didnt really lean on my car, kept it very conservative. I think with the your blower there is a fuel rail upgrade you need that JRE makes to help with fuel delivery.
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2017 ZL1 A10: 8.84 @ 156 PB
2017 ZL1 A10: Previously FBO 756/761 (9.6 @ 143 1/4) SOLD-2013 ZL1 M6:BTR,LTs,IDs,ATI,RotoFab10.84@129 SOLD-2011 SS M6: Blower, Cam, Alky, LTs. |
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03-13-2014, 08:32 AM
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#5 |
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Drives: 2010 Camaro 2SS/RS Join Date: Dec 2009
Location: Québec, Canada
Posts: 177
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I have the janetty fuel rail upgrade that links the back of the 2 fuel rails.
Now I'm just not sure my injectors will be big enough
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2010 2ss/rs Ls3, E-force s/c, 3.25'' pulley,Kooks long tubes w/cats, magnaflow 2.5" cat back, Rotofab cai, 65 lbs inj, MSD bap, AEM water/meth, comp cam, 621whp,577 wtq on mustang dyno
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03-13-2014, 08:41 AM
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#6 | |
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Drives: A Static line to a pack tray & ZL1 Join Date: Feb 2011
Location: Centeral NY
Posts: 2,276
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Quote:
Just find out what your tuner said. They will probably be maxed when you pulley down or getting close
__________________
2017 ZL1 A10: 8.84 @ 156 PB
2017 ZL1 A10: Previously FBO 756/761 (9.6 @ 143 1/4) SOLD-2013 ZL1 M6:BTR,LTs,IDs,ATI,RotoFab10.84@129 SOLD-2011 SS M6: Blower, Cam, Alky, LTs. |
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03-13-2014, 10:22 AM
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#7 |
 
Drives: 2010 2SS, 2017 Silverado LTZ Join Date: Jan 2007
Location: Denver,PA
Posts: 3,195
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I have 72# injectors with the stock Edelbrock pulley. Other addition in sig.
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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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