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05-16-2024, 06:28 PM
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#1 |
 Drives: 2013 1ss Join Date: Jul 2012
Location: WI.
Posts: 523
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whipple pulley question
I have a 2.9 whipple on a stock ls3 (has headers, cats, cai and tune) and run on 93 octane. The pulley is a 4 inch currently. i was wondering how much smaller pulley I can run on 93 octane and what kind of gain I might get by changing the pulley size?
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05-17-2024, 05:57 PM
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#2 |
    Drives: 2014 Camaro SS 1Le Join Date: Feb 2016
Location: IL
Posts: 1,643
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Gotta see if you have enough fuel pump and injectors, then maybe think of the pulley.
__________________
2014 SS 1LE Money Pit/ Forged 402
CAM 22X/24X, .619/.617, 113 LSA/ LS9 Heads FIC 1200cc/DSX Aux Pump//McLeod RXT Clutch 730whp: 630Trq |
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05-20-2024, 01:57 PM
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#3 | |
 
Drives: BLUE CAMARO ZL1 1LE M6 Join Date: Jun 2009
Location: ON THE DYNO WATERBURY CT.
Posts: 15,230
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Quote:
I can help you with all of that.
__________________
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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05-27-2024, 07:53 PM
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#4 |
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Talking to Mike Malicoat @ Whipple, I was told several years ago that a good rule of thumb is about +25hp for every 1/8" of pulley diameter decrease.
If I recall correctly, I was tapped out on the fuel system around the 625rwhp mark.
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745RWHP/634RWTQ on 93 @ 10psi
806/676 on E85 @ 10psi  COTW 9/8/14 |
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