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03-12-2016, 05:44 PM
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#1 |
 
Drives: 2014 ZL1 Join Date: Dec 2015
Location: louisville ky
Posts: 70
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2.38 upper
Does anyone run the 2.38 upper pulley, with stock lower? If so, what kind of boost levels are you hitting?
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03-12-2016, 06:31 PM
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#2 |
 
Drives: 2022 Camaro ZL1 Convertible A10 Join Date: Aug 2012
Location: Memphis, TN
Posts: 382
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I have the 2.38 upper pulley and stock lower combo.
Don't know the boost figures  rwhp was 645 with Brian Tooley stage III cam |
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03-12-2016, 06:48 PM
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#3 |
Drives: 2017 SS Join Date: Sep 2011
Location: Oklahoma
Posts: 417
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Pulley chart says about 15lbs
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2017 SW SS
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03-13-2016, 01:56 AM
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#4 |
 Drives: ADM TUNED AND BUILT Join Date: Nov 2014
Location: Wichita Falls, TX
Posts: 101
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2.38
I run 2.38 with a lower 9.17 no problems at all...
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03-14-2016, 04:38 PM
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#5 |
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Drives: 2014 ZL1 Join Date: Dec 2015
Location: louisville ky
Posts: 70
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I'm only hitting 10-11 psi with my 2.38 upper. Maybe I have a boost leak
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03-14-2016, 04:54 PM
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#6 |
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Chevy Power
Drives: 13 ZL1 M6 #123, '98 Jeep Wrangler Join Date: Dec 2011
Location: Tampa
Posts: 134
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It's probably belt slip, I had problems with mine slipping until i got the green belt, AC DELCO Fleetrunner HD
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2013 #123, M6 2.38 upper, ID850, dynatech 1 7/8 headers, cats, X pipe, ADM CAI, 160 Tstat, Hurst line lock, tune by FSP
Sebring 2:39.20 MPSS  |
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