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12-01-2020, 12:35 PM
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#1 |
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Former GM Technician
Drives: 2018 ZL1 A10, 06 Silverado Duramax Join Date: Sep 2009
Location: Switzerland
Posts: 341
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Weapon X HPFP Spring, Lash cap question
Just ordered my new Cam with a 306" lift fuel pump lobe, I belive that converts to 38%.
Is anyone running the weapon-x high pressure fuel pump spring? Should I order one? https://weaponxmotorsports.com/colle...=6123267129371 Also do I need a lash cap with my new cam and the stock LT4 pump?
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2018 Camaro ZL1 A10
Rotofab Big Gulp, Nick Williams 103, Magnuson 2650, 9.17" (14%) lower, 90mm upper, Vengeance Racing Heads (LME) Cam Package (Cammotion Stage 1), Johnson Lifters, JMS Voltage Booster, Lingenfelter high flow check valve, BBK shorty headers, Custom 2.75" down pipes, Gesi Gen2 high flow cats, MM catch can 791whp, 772ft-lbs SAE Just added 30% XDI Injectors, LPE big bore hpfp, Flex fuel. Elite tuning, results coming soon. 2006 Silverado Duramax Diesel MPI Compound Turbo 40% over Injectors Efi Live DSP5 Tuning Follow me on Instagram: Swisstyphoon1980 |
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12-05-2020, 04:24 PM
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#2 |
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Former GM Technician
Drives: 2018 ZL1 A10, 06 Silverado Duramax Join Date: Sep 2009
Location: Switzerland
Posts: 341
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Bringing this back up.
Anyone using the weapon-x spring? 
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2018 Camaro ZL1 A10
Rotofab Big Gulp, Nick Williams 103, Magnuson 2650, 9.17" (14%) lower, 90mm upper, Vengeance Racing Heads (LME) Cam Package (Cammotion Stage 1), Johnson Lifters, JMS Voltage Booster, Lingenfelter high flow check valve, BBK shorty headers, Custom 2.75" down pipes, Gesi Gen2 high flow cats, MM catch can 791whp, 772ft-lbs SAE Just added 30% XDI Injectors, LPE big bore hpfp, Flex fuel. Elite tuning, results coming soon. 2006 Silverado Duramax Diesel MPI Compound Turbo 40% over Injectors Efi Live DSP5 Tuning Follow me on Instagram: Swisstyphoon1980 |
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12-07-2020, 11:47 AM
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#3 |
 Drives: ex-wife's car Join Date: Jan 2011
Location: Iowa
Posts: 255
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I'm using that spring with no lash cap. From trying to measure it the lash cap was too much. I've had no issues so far with mine.
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12-07-2020, 12:48 PM
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#4 |
  
Drives: 2017 ZL1 Join Date: Jan 2017
Location: NJ
Posts: 905
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Have been running factory spring since 2018 with 38% fuel lobe cam, no issues observed
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2017 Camaro ZL1 Coupe M6 (847whp Dynojet on 93)
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12-08-2020, 12:39 PM
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#5 |
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Former GM Technician
Drives: 2018 ZL1 A10, 06 Silverado Duramax Join Date: Sep 2009
Location: Switzerland
Posts: 341
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Thanks for the feedback guys
__________________
2018 Camaro ZL1 A10
Rotofab Big Gulp, Nick Williams 103, Magnuson 2650, 9.17" (14%) lower, 90mm upper, Vengeance Racing Heads (LME) Cam Package (Cammotion Stage 1), Johnson Lifters, JMS Voltage Booster, Lingenfelter high flow check valve, BBK shorty headers, Custom 2.75" down pipes, Gesi Gen2 high flow cats, MM catch can 791whp, 772ft-lbs SAE Just added 30% XDI Injectors, LPE big bore hpfp, Flex fuel. Elite tuning, results coming soon. 2006 Silverado Duramax Diesel MPI Compound Turbo 40% over Injectors Efi Live DSP5 Tuning Follow me on Instagram: Swisstyphoon1980 |
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12-08-2020, 02:00 PM
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#6 | |
        
Drives: 2017 Camaro 2SS A8 Join Date: Aug 2018
Location: Petersham MA
Posts: 4,749
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Quote:
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2017 Chevy Camaro 2SS A8 Whipple 3.0, Mast Black Label heads, Fore triple in-tank pumps, 112mm TB, LPE +52% injectors, LPE BB HPFP, 15” conversion 1059 WHP/944 WTQ, 9.48@150
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12-08-2020, 02:16 PM
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#7 | |
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Former GM Technician
Drives: 2018 ZL1 A10, 06 Silverado Duramax Join Date: Sep 2009
Location: Switzerland
Posts: 341
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Quote:
You helped with my decision. 
__________________
2018 Camaro ZL1 A10
Rotofab Big Gulp, Nick Williams 103, Magnuson 2650, 9.17" (14%) lower, 90mm upper, Vengeance Racing Heads (LME) Cam Package (Cammotion Stage 1), Johnson Lifters, JMS Voltage Booster, Lingenfelter high flow check valve, BBK shorty headers, Custom 2.75" down pipes, Gesi Gen2 high flow cats, MM catch can 791whp, 772ft-lbs SAE Just added 30% XDI Injectors, LPE big bore hpfp, Flex fuel. Elite tuning, results coming soon. 2006 Silverado Duramax Diesel MPI Compound Turbo 40% over Injectors Efi Live DSP5 Tuning Follow me on Instagram: Swisstyphoon1980 |
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